diff --git a/doc/doxygen/groups/models.md b/doc/doxygen/groups/models.md
index c48f3b30f35a0d9c93428bccaa2dc5c4cec041bf..b44b106b3e0bdda8a1160e8e76a412e4fb366889 100644
--- a/doc/doxygen/groups/models.md
+++ b/doc/doxygen/groups/models.md
@@ -228,7 +228,7 @@
 @copydoc dumux/porenetwork/2p/model.hh
 @ingroup PoreNetworkModels
 
-@defgroup PNMSolidEnergyModel
+@defgroup PNMSolidEnergyModel solidenergy
 @brief Energy equation for the solid (heat equation)
 @copydoc dumux/porenetwork/solidenergy/model.hh
 @ingroup PoreNetworkModels
diff --git a/dumux/multidomain/dualnetwork/CMakeLists.txt b/dumux/multidomain/dualnetwork/CMakeLists.txt
index 7f6eca3918dedbb0e54c8524b74ffd555c558004..e95ca099a830d847fa9c01faca258a750f674217 100644
--- a/dumux/multidomain/dualnetwork/CMakeLists.txt
+++ b/dumux/multidomain/dualnetwork/CMakeLists.txt
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 file(GLOB DUMUX_MULTIDOMAIN_DUALNETWORK_HEADERS *.hh *.inc)
 install(FILES ${DUMUX_MULTIDOMAIN_DUALNETWORK_HEADERS}
         DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/dumux/multidomain/dualnetwork)
diff --git a/dumux/multidomain/dualnetwork/couplingmanager.hh b/dumux/multidomain/dualnetwork/couplingmanager.hh
index 04e548c802dc394d7dc9d4b4364fe28c1b0291c5..55dd22d338160141f4fc42bfcff1200785b7722c 100644
--- a/dumux/multidomain/dualnetwork/couplingmanager.hh
+++ b/dumux/multidomain/dualnetwork/couplingmanager.hh
@@ -254,7 +254,7 @@ public:
     // \{
 
     /*!
-     * \brief returns an iteratable container of all indices of degrees of freedom of domain j
+     * \brief returns an iterable container of all indices of degrees of freedom of domain j
      *        that couple with / influence the element residual of the given element of domain i
      *
      * \param domainI the domain index of domain i
@@ -437,7 +437,7 @@ public:
                         }
                     }
                 }
-                DUNE_THROW(Dune::InvalidStateException, "No neigbor area found");
+                DUNE_THROW(Dune::InvalidStateException, "No neighbor area found");
             };
 
             static const bool useAvgA = getParam<bool>("Problem.UseAverageConvectionArea", false);
@@ -811,14 +811,14 @@ public:
 
     /*!
      * \brief set the pointers to the grid variables
-     * \param problems A tuple of shared pointers to the grid variables
+     * \param gridVariables A tuple of shared pointers to the grid variables
      */
     void setGridVariables(GridVariablesTuple&& gridVariables)
     { gridVariables_ = gridVariables; }
 
     /*!
      * \brief set a pointer to one of the grid variables
-     * \param problem a pointer to the grid variables
+     * \param gridVariables a pointer to the grid variables
      * \param domainIdx the domain index of the grid variables
      */
     template<class  GridVariables, std::size_t i>
@@ -963,11 +963,9 @@ protected:
     GridVariablesTuple gridVariables_;
 
     //! the extended source stencil object
-    EmbeddedCoupling::PNMHeatExtendedSourceStencil<ThisType> extendedSourceStencil_;
-
-
+    PoreNetwork::PNMHeatExtendedSourceStencil<ThisType> extendedSourceStencil_;
 };
 
-}; // end namespace Dumux
+}; // end namespace Dumux::PoreNetwork
 
 #endif
diff --git a/dumux/multidomain/dualnetwork/couplingmapper.hh b/dumux/multidomain/dualnetwork/couplingmapper.hh
index 5f6abd4d9236eb0e0e22bec9845861759a2f176f..32c76259ed424398c9add55d54c9d0ff5d301c6a 100644
--- a/dumux/multidomain/dualnetwork/couplingmapper.hh
+++ b/dumux/multidomain/dualnetwork/couplingmapper.hh
@@ -7,7 +7,7 @@
 /*!
  * \file
  * \ingroup PoreNetwork
- * \copydoc Dumux::DualNetworkCouplingMapper
+ * \copydoc Dumux::PoreNetwork::DualNetworkCouplingMapper
  */
 
 #ifndef DUMUX_DUAL_NETWORK_COUPLINGMAPPER_HH
@@ -410,6 +410,6 @@ private:
     std::unordered_map<std::size_t, std::size_t> hostGridElementIndexToGlobalId_;
 };
 
-} // end namespace Dumux
+} // end namespace Dumux::PoreNetwork
 
 #endif
diff --git a/dumux/multidomain/dualnetwork/extendedsourcestencil.hh b/dumux/multidomain/dualnetwork/extendedsourcestencil.hh
index 4bfc099dbfeee7b0fa8bb0a924509180326e9254..2463bd23a44b3a69e22d29ef8f4a77ddbb3e27f8 100644
--- a/dumux/multidomain/dualnetwork/extendedsourcestencil.hh
+++ b/dumux/multidomain/dualnetwork/extendedsourcestencil.hh
@@ -6,12 +6,12 @@
 //
 /*!
  * \file
- * \ingroup EmbeddedCoupling
+ * \ingroup PoreNetwork
  * \brief Extended source stencil helper class for coupling managers
  */
 
-#ifndef DUMUX_PNM_HEAT_EXTENDEDSOURCESTENCIL_HH
-#define DUMUX_PNM_HEAT_EXTENDEDSOURCESTENCIL_HH
+#ifndef DUMUX_DUAL_NETWORK_EXTENDEDSOURCESTENCIL_HH
+#define DUMUX_DUAL_NETWORK_EXTENDEDSOURCESTENCIL_HH
 
 #include <vector>
 
@@ -22,10 +22,10 @@
 #include <dumux/common/numericdifferentiation.hh>
 #include <dumux/discretization/method.hh>
 
-namespace Dumux::EmbeddedCoupling {
+namespace Dumux::PoreNetwork {
 
 /*!
- * \ingroup EmbeddedCoupling
+ * \ingroup PoreNetwork
  * \brief A class managing an extended source stencil
  * \tparam CouplingManager the coupling manager type
  */
@@ -175,6 +175,6 @@ private:
     std::unordered_map<std::size_t, std::vector<std::size_t>> sourceStencils_;
 };
 
-} // end namespace Dumux::EmbeddedCoupling
+} // end namespace Dumux::PoreNetwork
 
 #endif
diff --git a/dumux/porenetwork/solidenergy/CMakeLists.txt b/dumux/porenetwork/solidenergy/CMakeLists.txt
index 4c4e0f42fe4c701acf57a95ddb85fb45f2b81f79..c437a45f7a80c9ab1b53b34587498643e443b333 100644
--- a/dumux/porenetwork/solidenergy/CMakeLists.txt
+++ b/dumux/porenetwork/solidenergy/CMakeLists.txt
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 file(GLOB DUMUX_PORENETWORK_SOLIDENERGY_HEADERS *.hh *.inc)
 install(FILES ${DUMUX_PORENETWORK_SOLIDENERGY_HEADERS}
         DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/dumux/porenetwork/solidenergy)
diff --git a/dumux/porenetwork/solidenergy/fluxvariablescache.hh b/dumux/porenetwork/solidenergy/fluxvariablescache.hh
index b9d7de5b0801ced834e5b2e86e4f56a74d7ea3e6..5bf204bb3e3f6c05c95640f6ebba3f919cfa1e83 100644
--- a/dumux/porenetwork/solidenergy/fluxvariablescache.hh
+++ b/dumux/porenetwork/solidenergy/fluxvariablescache.hh
@@ -1,21 +1,9 @@
 // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 // vi: set et ts=4 sw=4 sts=4:
-/*****************************************************************************
- *   See the file COPYING for full copying permissions.                      *
- *                                                                           *
- *   This program is free software: you can redistribute it and/or modify    *
- *   it under the terms of the GNU General Public License as published by    *
- *   the Free Software Foundation, either version 2 of the License, or       *
- *   (at your option) any later version.                                     *
- *                                                                           *
- *   This program is distributed in the hope that it will be useful,         *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of          *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the            *
- *   GNU General Public License for more details.                            *
- *                                                                           *
- *   You should have received a copy of the GNU General Public License       *
- *   along with this program.  If not, see <http://www.gnu.org/licenses/>.   *
- *****************************************************************************/
+//
+// SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
 /*!
  * \file
  * \ingroup PNMSolidEnergyModel
diff --git a/dumux/porenetwork/solidenergy/iofields.hh b/dumux/porenetwork/solidenergy/iofields.hh
index 06a2e3f212ed939e45a0aa7e5e23d10a2380a84b..92d6d516cacdcf41808f334a2eada8d0004e3588 100644
--- a/dumux/porenetwork/solidenergy/iofields.hh
+++ b/dumux/porenetwork/solidenergy/iofields.hh
@@ -1,25 +1,13 @@
 // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 // vi: set et ts=4 sw=4 sts=4:
-/*****************************************************************************
- *   See the file COPYING for full copying permissions.                      *
- *                                                                           *
- *   This program is free software: you can redistribute it and/or modify    *
- *   it under the terms of the GNU General Public License as published by    *
- *   the Free Software Foundation, either version 2 of the License, or       *
- *   (at your option) any later version.                                     *
- *                                                                           *
- *   This program is distributed in the hope that it will be useful,         *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of          *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the            *
- *   GNU General Public License for more details.                            *
- *                                                                           *
- *   You should have received a copy of the GNU General Public License       *
- *   along with this program.  If not, see <http://www.gnu.org/licenses/>.   *
- *****************************************************************************/
+//
+// SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
 /*!
  * \file
  * \ingroup PNMSolidEnergyModel
- * \copydoc Dumux::PNMOnePIOFields
+ * \copydoc Dumux::PoreNetwork::SolidEnergyIOFields
  */
 #ifndef DUMUX_PNM_SOLID_ENERGY_IO_FIELDS_HH
 #define DUMUX_PNM_SOLID_ENERGY_IO_FIELDS_HH
diff --git a/dumux/porenetwork/solidenergy/model.hh b/dumux/porenetwork/solidenergy/model.hh
index d9153e767c25e8d5b18c40291a9049bcd34ddeda..a278bd2c367bb2eea5d1e859ea19617b7fe1d5aa 100644
--- a/dumux/porenetwork/solidenergy/model.hh
+++ b/dumux/porenetwork/solidenergy/model.hh
@@ -1,21 +1,9 @@
 // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 // vi: set et ts=4 sw=4 sts=4:
-/*****************************************************************************
- *   See the file COPYING for full copying permissions.                      *
- *                                                                           *
- *   This program is free software: you can redistribute it and/or modify    *
- *   it under the terms of the GNU General Public License as published by    *
- *   the Free Software Foundation, either version 2 of the License, or       *
- *   (at your option) any later version.                                     *
- *                                                                           *
- *   This program is distributed in the hope that it will be useful,         *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of          *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the            *
- *   GNU General Public License for more details.                            *
- *                                                                           *
- *   You should have received a copy of the GNU General Public License       *
- *   along with this program.  If not, see <http://www.gnu.org/licenses/>.   *
- *****************************************************************************/
+//
+// SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
 /*!
  * \file
  * \ingroup PNMSolidEnergyModel
@@ -105,6 +93,6 @@ template<class TypeTag>
 struct IOFields<TypeTag, TTag::PNMSolidEnergy>
 { using type = PoreNetwork::SolidEnergyIOFields; };
 
-} // namespace Dumux::Properies
+} // namespace Dumux::Properties
 
 #endif
diff --git a/dumux/porenetwork/solidenergy/spatialparams.hh b/dumux/porenetwork/solidenergy/spatialparams.hh
index e7936746fc85dd59d7435cbadad5911fd4a8e78f..562aece0c9640a5d0f6193300b1d3ffaecfec47f 100644
--- a/dumux/porenetwork/solidenergy/spatialparams.hh
+++ b/dumux/porenetwork/solidenergy/spatialparams.hh
@@ -1,21 +1,9 @@
 // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 // vi: set et ts=4 sw=4 sts=4:
-/*****************************************************************************
- *   See the file COPYING for full copying permissions.                      *
- *                                                                           *
- *   This program is free software: you can redistribute it and/or modify    *
- *   it under the terms of the GNU General Public License as published by    *
- *   the Free Software Foundation, either version 2 of the License, or       *
- *   (at your option) any later version.                                     *
- *                                                                           *
- *   This program is distributed in the hope that it will be useful,         *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of          *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the            *
- *   GNU General Public License for more details.                            *
- *                                                                           *
- *   You should have received a copy of the GNU General Public License       *
- *   along with this program.  If not, see <http://www.gnu.org/licenses/>.   *
- *****************************************************************************/
+//
+// SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
 /*!
  * \file
  * \ingroup PNMSolidEnergyModel
@@ -63,6 +51,6 @@ public:
 
 };
 
-} // namespace Dumux
+} // end namespace Dumux::PoreNetwork
 
 #endif
diff --git a/dumux/porousmediumflow/nonisothermal/localresidual_incompressible.hh b/dumux/porousmediumflow/nonisothermal/localresidual_incompressible.hh
index 8fcc29bc2b4288b72347ebaeca9105966035273e..850d4b474cca2d3a90b878b23898a728b8d324a9 100644
--- a/dumux/porousmediumflow/nonisothermal/localresidual_incompressible.hh
+++ b/dumux/porousmediumflow/nonisothermal/localresidual_incompressible.hh
@@ -61,14 +61,19 @@ public:
     /*!
      * \brief The advective phase energy fluxes for incompressible flow.
      *
-     * Using specific internal energy $u$ instead of specific enthalpy $h$ for incompressible flow in convective flux
-     * to account for otherwise neglected pressure work term ($\nabla p \cdot v$).
+     * Using specific internal energy $u$ instead of specific enthalpy \f$h\f$ for incompressible flow in convective flux
+     * to account for otherwise neglected pressure work term (\f$\nabla p \cdot v\f$).
      *
-     * Compressible formulation in EnergyLocalResidual (neglecting pressure work term ($\nabla p \cdot v$))
-     * is $\frac{\partial}{\partial t} (\rho u) = -\nabla \cdot (\rho v h) + \nabla \cdot (\lambda \nabla T)$.
+     * Compressible formulation in EnergyLocalResidual (neglecting pressure work term (\f$\nabla p \cdot v\f$))
+     * is
+     \f{align*}{
+     \frac{\partial}{\partial t} (\rho u) &= -\nabla \cdot (\rho v h) + \nabla \cdot (\lambda \nabla T)
+     \f}
      *
      * Incompressible energy formulation is
-     * $\frac{\partial}{\partial t} (\rho u) = -\nabla \cdot (\rho v u) + \nabla \cdot (\lambda \nabla T)$
+     \f{align*}{
+     \frac{\partial}{\partial t} (\rho u) = -\nabla \cdot (\rho v u) + \nabla \cdot (\lambda \nabla T)
+     \f}
      *
      * \param flux The flux
      * \param fluxVars The flux variables.
@@ -78,8 +83,9 @@ public:
                                    FluxVariables& fluxVars,
                                    int phaseIdx)
     {
+        // internal energy used instead of enthalpy for incompressible flow
         auto upwindTerm = [phaseIdx](const auto& volVars)
-        { return volVars.density(phaseIdx)*volVars.mobility(phaseIdx)*volVars.internalEnergy(phaseIdx); }; //internal energy used instead of enthalpy for incompressible flow
+        { return volVars.density(phaseIdx)*volVars.mobility(phaseIdx)*volVars.internalEnergy(phaseIdx); };
 
         flux[energyEqIdx] += fluxVars.advectiveFlux(phaseIdx, upwindTerm);
     }
diff --git a/test/multidomain/dualnetwork/CMakeLists.txt b/test/multidomain/dualnetwork/CMakeLists.txt
index 6af1c5f3da8f4dceb100b859d0bcaef2acdf1ef8..fbeae0cf0e78bbb0b651d3620eb1935614b9cdd5 100644
--- a/test/multidomain/dualnetwork/CMakeLists.txt
+++ b/test/multidomain/dualnetwork/CMakeLists.txt
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 dune_symlink_to_source_files(FILES grids "params.input")
 
 dumux_add_test(NAME test_md_dualnetwork_heat_1p_solid
diff --git a/test/multidomain/dualnetwork/grids/Berea_center_cropped_200_200_dual.dgf b/test/multidomain/dualnetwork/grids/Berea_center_cropped_200_200_dual.dgf
index bee69c45439ccf8e827810c5261a4055bdf04c53..77c9b8e3b6b99068cb7cc37654c4c044ee202308 100644
--- a/test/multidomain/dualnetwork/grids/Berea_center_cropped_200_200_dual.dgf
+++ b/test/multidomain/dualnetwork/grids/Berea_center_cropped_200_200_dual.dgf
@@ -1,4 +1,6 @@
 DGF
+% SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
+% SPDX-License-Identifier: CC-BY-4.0
 % Vertex parameters: PoreInscribedRadius PoreExtendedRadius PoreVolume PoreLabel PoreDomainType
 % Element parameters: ThroatInscribedRadius ThroatLength ThroatCrossSectionalArea ThroatShapeFactor ThroatCenterX ThroatCenterY ThroatCenterZ ThroatLabel ThroatDomainType
 Vertex
diff --git a/test/multidomain/dualnetwork/main.cc b/test/multidomain/dualnetwork/main.cc
index 98110b3fac38b80a8a3e5b7c6b2105b6d201bb01..923673c6ce17d0828ca0ae25dbdd052808f607d8 100644
--- a/test/multidomain/dualnetwork/main.cc
+++ b/test/multidomain/dualnetwork/main.cc
@@ -525,7 +525,7 @@ int main(int argc, char** argv)
 
         std::cout << "Total sum void " << voidInletFlux[1] + voidOutletFlux[1] + voidHeaterFlux[1] - sumCouplingVoid << std::endl;
 
-        std::cout << "\n\n ***Exhange *** " << std::endl;
+        std::cout << "\n\n ***Exchange *** " << std::endl;
         std::cout << "sumCouplingVoid: " << sumCouplingVoid << std::endl;
         std::cout << "solidInletFlux: " << solidInletFlux << std::endl;
         std::cout << "voidHeaterFlux: " << voidHeaterFlux[1] << std::endl;
@@ -552,10 +552,6 @@ int main(int argc, char** argv)
         std::cout << "\n\n ***Sum of sums  *** " << std::endl;
         std::cout << sumConvection + sumInletCond + sumHeaterFlux << std::endl;
 
-
-
-
-
         Dune::VTKWriter fluxVtkWriter(voidGridGeometry->gridView());
         std::vector<Scalar> voidMassFlux(voidGridGeometry->numDofs());
         std::vector<Scalar> voidHeatFlux(voidGridGeometry->numDofs());
diff --git a/test/multidomain/dualnetwork/problem_solid.hh b/test/multidomain/dualnetwork/problem_solid.hh
index fe2d6c76682248a472a56b4173784d6ab457e178..4dd666c7278658c78ed4def802ded081795d1f19 100644
--- a/test/multidomain/dualnetwork/problem_solid.hh
+++ b/test/multidomain/dualnetwork/problem_solid.hh
@@ -68,18 +68,9 @@ public:
             sourceMode_ = SourceMode::max;
     }
 
-    /*!
-     * \brief The problem name.
-     */
     const std::string& name() const
-    {
-        return problemName_;
-    }
+    { return problemName_; }
 
-    /*!
-     * \brief Specifies which kind of boundary condition should be
-     *        used for which equation on a given boundary control volume.
-     */
     BoundaryTypes boundaryTypes(const Element &element, const SubControlVolume& scv) const
     {
         BoundaryTypes values;
@@ -158,9 +149,6 @@ public:
         return flux;
     }
 
-    /*!
-     * \brief Evaluates the boundary conditions for a Dirichlet control volume.
-     */
     PrimaryVariables dirichlet(const Element& element, const SubControlVolume& scv) const
     {
         auto values = initialAtPos(scv.dofPosition());
@@ -178,9 +166,6 @@ public:
         return values;
     }
 
-    /*!
-     * \brief Evaluates the boundary conditions for a Neumann control volume.
-     */
     template<class ElementVolumeVariables, class ElementFluxVariablesCache>
     NumEqVector neumann(const Element& element,
                         const FVElementGeometry& fvGeometry,
@@ -191,9 +176,6 @@ public:
         return NumEqVector(0.0);
     }
 
-    /*!
-     * \brief Evaluates the initial value for a control volume.
-     */
     PrimaryVariables initialAtPos(const GlobalPosition& pos) const
     {
         PrimaryVariables values(initialTemperature_);
@@ -221,13 +203,13 @@ private:
     bool onHeaterBoundary_(const SubControlVolume& scv) const
     { return this->gridGeometry().poreLabel(scv.dofIndex()) == heaterIndex_; }
 
+    std::shared_ptr<const CouplingManager> couplingManager_;
+
     std::string problemName_;
     Scalar initialTemperature_;
     Scalar temperatureIn_;
     Scalar temperatureBottom_;
     bool heatingOn_;
-
-    std::shared_ptr<const CouplingManager> couplingManager_;
     bool enableCoupling_;
     int inletIndex_;
     int heaterIndex_;
diff --git a/test/multidomain/dualnetwork/problem_void.hh b/test/multidomain/dualnetwork/problem_void.hh
index 9af50eefbf51b837d47a2b03a1c7f8dab74b921a..95a049f5dba418ef026a194dcf477f6fe5fd9bc8 100644
--- a/test/multidomain/dualnetwork/problem_void.hh
+++ b/test/multidomain/dualnetwork/problem_void.hh
@@ -6,26 +6,18 @@
 //
 /*!
  * \file
- *
  * \brief A test problem for the one-phase pore network model.
  */
-
 #ifndef DUMUX_TEST_MULTIDOMAIN_DUALNETWORK_PROBLEM_VOID_HH
-#define DUMUX_TEST_MULTIDOMAIN_DUALNETWORK_PROBLEM__VOID_HH
-
+#define DUMUX_TEST_MULTIDOMAIN_DUALNETWORK_PROBLEM_VOID_HH
 
-// base problem
 #include <dumux/porousmediumflow/problem.hh>
-// Pore network model
 #include <dumux/porenetwork/1p/model.hh>
 
 #include <dumux/common/boundarytypes.hh>
 #include <dumux/common/numeqvector.hh>
 
-namespace Dumux
-{
-template <class TypeTag>
-class VoidSubProblem;
+namespace Dumux {
 
 template <class TypeTag>
 class VoidSubProblem : public PorousMediumFlowProblem<TypeTag>
@@ -57,6 +49,7 @@ public:
                    std::shared_ptr<const CouplingManager> couplingManager)
     : ParentType(gridGeometry, spatialParams, "Void"), couplingManager_(couplingManager)
     {
+        problemName_ = getParam<std::string>("Vtk.OutputName") + "_" + getParamFromGroup<std::string>(this->paramGroup(), "Problem.Name");
         pressureIn_ = getParamFromGroup<Scalar>(this->paramGroup(), "Problem.InletPressure");
         pressureOut_ = getParamFromGroup<Scalar>(this->paramGroup(), "Problem.OutletPressure");
         temperatureInitial_ = getParamFromGroup<Scalar>(this->paramGroup(), "Problem.InitialTemperature");
@@ -84,31 +77,14 @@ public:
             sourceMode_ = SourceMode::max;
     }
 
-    /*!
-     * \name Simulation steering
-     */
-    // \{
-
-    /*!
-     * \brief The problem name.
-     */
     const std::string& name() const
-    {
-        static const auto problemName = getParam<std::string>("Vtk.OutputName") + "_" + getParamFromGroup<std::string>(this->paramGroup(), "Problem.Name");
-        return problemName;
-    }
+    { return problemName_; }
 
     void setGridVariables(std::shared_ptr<GridVariables> gridVars)
     {
         gridVars_ = gridVars;
     }
 
-     /*!
-     * \name Boundary conditions
-     */
-    // \{
-    //! Specifies which kind of boundary condition should be used for
-    //! which equation for a finite volume on the boundary.
     BoundaryTypes boundaryTypes(const Element& element, const SubControlVolume& scv) const
     {
         BoundaryTypes bcTypes;
@@ -145,15 +121,6 @@ public:
         return bcTypes;
     }
 
-        /*!
-     * \brief Evaluate the boundary conditions for a dirichlet
-     *        control volume.
-     *
-     * \param values The dirichlet values for the primary variables
-     * \param vertex The vertex (pore body) for which the condition is evaluated
-     *
-     * For this method, the \a values parameter stores primary variables.
-     */
     PrimaryVariables dirichlet(const Element& element,
                                const SubControlVolume& scv) const
     {
@@ -180,56 +147,37 @@ public:
         return values;
     }
 
-    // \}
-
-    /*!
-     * \name Volume terms
-     */
-    // \{
-    /*!
-     * \brief Evaluate the source term for all phases within a given
-     *        sub-control-volume.
-     *
-     * This is the method for the case where the source term is
-     * potentially solution dependent and requires some quantities that
-     * are specific to the fully-implicit method.
-     *
-     * \param element The finite element
-     * \param fvGeometry The finite-volume geometry
-     * \param elemVolVars All volume variables for the element
-     * \param scv The sub control volume
-     *
-     * For this method, the return parameter stores the conserved quantity rate
-     * generated or annihilate per volume unit. Positive values mean
-     * that the conserved quantity is created, negative ones mean that it vanishes.
-     * E.g. for the mass balance that would be a mass rate in \f$ [ kg / (m^3 \cdot s)] \f$.
-     */
-     template<class ElementVolumeVariables>
-     NumEqVector source(const Element& element,
-                        const FVElementGeometry& fvGeometry,
-                        const ElementVolumeVariables& elemVolVars,
-                        const SubControlVolume& scv) const
-     {
+
+    template<class ElementVolumeVariables>
+    NumEqVector source(const Element& element,
+                       const FVElementGeometry& fvGeometry,
+                       const ElementVolumeVariables& elemVolVars,
+                       const SubControlVolume& scv) const
+    {
         NumEqVector value(0.0);
 
         if (enableCoupling_ && couplingManager_->isCoupledPore(CouplingManager::voidDomainIdx, scv.dofIndex()))
         {
             if (sourceMode_ == SourceMode::conduction)
             {
-                value[Indices::energyEqIdx] = couplingManager_->conductionSource(CouplingManager::voidDomainIdx,
-                                                                                 element, fvGeometry, elemVolVars, scv);
+                value[Indices::energyEqIdx] = couplingManager_->conductionSource(
+                    CouplingManager::voidDomainIdx, element, fvGeometry, elemVolVars, scv
+                );
             }
             else if (sourceMode_ == SourceMode::convection)
             {
-                value[Indices::energyEqIdx] = couplingManager_->convectionSource(CouplingManager::voidDomainIdx,
-                                                                                 element, fvGeometry, elemVolVars, scv);
+                value[Indices::energyEqIdx] = couplingManager_->convectionSource(
+                    CouplingManager::voidDomainIdx, element, fvGeometry, elemVolVars, scv
+                );
             }
             else
             {
-                const Scalar condSource = couplingManager_->conductionSource(CouplingManager::voidDomainIdx,
-                                                                             element, fvGeometry, elemVolVars, scv);
-                const Scalar convSource = couplingManager_->convectionSource(CouplingManager::voidDomainIdx,
-                                                                             element, fvGeometry, elemVolVars, scv);
+                const Scalar condSource = couplingManager_->conductionSource(
+                    CouplingManager::voidDomainIdx, element, fvGeometry, elemVolVars, scv
+                );
+                const Scalar convSource = couplingManager_->convectionSource(
+                    CouplingManager::voidDomainIdx, element, fvGeometry, elemVolVars, scv
+                );
                 using std::abs;
                 if (abs(condSource) > abs(convSource))
                     value[Indices::energyEqIdx] = condSource;
@@ -245,108 +193,114 @@ public:
             value[Indices::energyEqIdx] += heatOutFlowCondition(element, fvGeometry, elemVolVars, scv);
 
         return value;
-     }
-
-
-     template<class ElementVolumeVariables>
-     Scalar heatOutFlowCondition(const Element& element,
-                                 const FVElementGeometry& fvGeometry,
-                                 const ElementVolumeVariables& elemVolVars,
-                                 const SubControlVolume& scv) const
-     {
-         Scalar value = 0.0;
-         using FluxVariables = GetPropType<TypeTag, Properties::FluxVariables>;
-         auto elemFluxVarsCache = localView(gridVars_->gridFluxVarsCache());
-         elemFluxVarsCache.bindElement(element, fvGeometry, elemVolVars);
-
-         for (auto&& scvf : scvfs(fvGeometry))
-         {
-             FluxVariables fluxVars;
-             fluxVars.init(*this, element, fvGeometry, elemVolVars, scvf, elemFluxVarsCache);
-             const Scalar flux = fluxVars.advectiveFlux(0, [&](const auto& volVars){ return elemVolVars[scv].mobility(0)*elemVolVars[scv].density(0)*elemVolVars[scv].enthalpy(0);});
-
-             const auto& insideScv = fvGeometry.scv(scvf.insideScvIdx());
-
-             if (insideScv.dofIndex() == scv.dofIndex())
-                 value += flux / scv.volume();
-             else
-                 value -= flux / scv.volume();
-         }
-         return value;
-     }
+    }
 
-     template<class ElementVolumeVariables>
-     Scalar robinInletHeatFlux(const Element& element,
-                               const FVElementGeometry& fvGeometry,
-                               const ElementVolumeVariables& elemVolVars,
-                               const SubControlVolume& scv) const
-     {
-         Scalar flux = 0.0;
 
-         if (useRobinInlet_ && onInletBoundary_(scv))
-         {
-             flux += robinInletAdvectiveHeatFlux(element, fvGeometry, elemVolVars, scv);
-             flux += robinInletConductiveHeatFlux(element, fvGeometry, elemVolVars, scv);
-         }
+    template<class ElementVolumeVariables>
+    Scalar heatOutFlowCondition(const Element& element,
+                                const FVElementGeometry& fvGeometry,
+                                const ElementVolumeVariables& elemVolVars,
+                                const SubControlVolume& scv) const
+    {
+        Scalar value = 0.0;
+        using FluxVariables = GetPropType<TypeTag, Properties::FluxVariables>;
+        auto elemFluxVarsCache = localView(gridVars_->gridFluxVarsCache());
+        elemFluxVarsCache.bindElement(element, fvGeometry, elemVolVars);
+
+        for (auto&& scvf : scvfs(fvGeometry))
+        {
+            FluxVariables fluxVars;
+            fluxVars.init(*this, element, fvGeometry, elemVolVars, scvf, elemFluxVarsCache);
+            const Scalar flux = fluxVars.advectiveFlux(0,
+                [&](const auto& volVars)
+                {
+                    return elemVolVars[scv].mobility(0)
+                            * elemVolVars[scv].density(0)
+                            * elemVolVars[scv].enthalpy(0);
+                }
+            );
+
+            const auto& insideScv = fvGeometry.scv(scvf.insideScvIdx());
+
+            if (insideScv.dofIndex() == scv.dofIndex())
+                value += flux / scv.volume();
+            else
+                value -= flux / scv.volume();
+        }
+        return value;
+    }
+
+    template<class ElementVolumeVariables>
+    Scalar robinInletHeatFlux(const Element& element,
+                            const FVElementGeometry& fvGeometry,
+                            const ElementVolumeVariables& elemVolVars,
+                            const SubControlVolume& scv) const
+    {
+        Scalar flux = 0.0;
 
-         return flux;
-     }
+        if (useRobinInlet_ && onInletBoundary_(scv))
+        {
+            flux += robinInletAdvectiveHeatFlux(element, fvGeometry, elemVolVars, scv);
+            flux += robinInletConductiveHeatFlux(element, fvGeometry, elemVolVars, scv);
+        }
+
+        return flux;
+    }
+
+    template<class ElementVolumeVariables>
+    Scalar robinInletAdvectiveHeatFlux(const Element& element,
+                                    const FVElementGeometry& fvGeometry,
+                                    const ElementVolumeVariables& elemVolVars,
+                                    const SubControlVolume& scv) const
+    {
+        using FluxVariables = GetPropType<TypeTag, Properties::FluxVariables>;
+        auto elemFluxVarsCache = localView(gridVars_->gridFluxVarsCache());
+        elemFluxVarsCache.bindElement(element, fvGeometry, elemVolVars);
+        const auto& volVars = elemVolVars[scv];
+
+        for (auto&& scvf : scvfs(fvGeometry))
+        {
+            FluxVariables fluxVars;
+            fluxVars.init(*this, element, fvGeometry, elemVolVars, scvf, elemFluxVarsCache);
+            const Scalar enthalypy = ElementVolumeVariables::VolumeVariables::FluidSystem::enthalpy(
+                temperatureIn_, volVars.pressure(0)
+            );
+
+            const Scalar result = fluxVars.advectiveFlux(0,
+                [&](const auto& v)
+                {
+                    return volVars.mobility(0)
+                            * volVars.density(0)*enthalypy;
+                }
+            );
+            const auto& insideScv = fvGeometry.scv(scvf.insideScvIdx());
+
+            if (insideScv.dofIndex() == scv.dofIndex())
+                return result / scv.volume();
+            else
+                return  -result / scv.volume();
+        }
+
+        DUNE_THROW(Dune::InvalidStateException, "Flux failed");
+    }
 
-     template<class ElementVolumeVariables>
-     Scalar robinInletAdvectiveHeatFlux(const Element& element,
+    template<class ElementVolumeVariables>
+    Scalar robinInletConductiveHeatFlux(const Element& element,
                                         const FVElementGeometry& fvGeometry,
                                         const ElementVolumeVariables& elemVolVars,
                                         const SubControlVolume& scv) const
-     {
-         using FluxVariables = GetPropType<TypeTag, Properties::FluxVariables>;
-         auto elemFluxVarsCache = localView(gridVars_->gridFluxVarsCache());
-         elemFluxVarsCache.bindElement(element, fvGeometry, elemVolVars);
-         const auto& volVars = elemVolVars[scv];
-
-         for (auto&& scvf : scvfs(fvGeometry))
-         {
-             FluxVariables fluxVars;
-             fluxVars.init(*this, element, fvGeometry, elemVolVars, scvf, elemFluxVarsCache);
-             const Scalar enthalypy = ElementVolumeVariables::VolumeVariables::FluidSystem::enthalpy(temperatureIn_, volVars.pressure(0));
-
-             const Scalar result = fluxVars.advectiveFlux(0, [&](const auto& v){ return volVars.mobility(0)*volVars.density(0)*enthalypy;});
-             const auto& insideScv = fvGeometry.scv(scvf.insideScvIdx());
-
-             if (insideScv.dofIndex() == scv.dofIndex())
-                 return result / scv.volume();
-             else
-                 return  -result / scv.volume();
-         }
-         DUNE_THROW(Dune::InvalidStateException, "Flux failed");
-     }
-
-     template<class ElementVolumeVariables>
-     Scalar robinInletConductiveHeatFlux(const Element& element,
-                                         const FVElementGeometry& fvGeometry,
-                                         const ElementVolumeVariables& elemVolVars,
-                                         const SubControlVolume& scv) const
-     {
-         const auto& volVars = elemVolVars[scv];
-         const Scalar r = volVars.poreInscribedRadius();
-         static const Scalar lambdaFluid = getParam<Scalar>("2.Component.LiquidThermalConductivity");
-         static const Scalar dPadding = getParamFromGroup<Scalar>(this->paramGroup(), "Problem.PaddingThickness");
-         static const Scalar robinShapeFactor = getParamFromGroup<Scalar>(this->paramGroup(), "Problem.RobinShapeFactor", 1.0);
-         const Scalar A = M_PI * r*r * robinShapeFactor;
-
-         return (temperatureIn_ - volVars.temperature())
-                * A * lambdaFluid / (r + dPadding) / (scv.volume() * fvGeometry.gridGeometry().coordinationNumber()[scv.dofIndex()]);
-     }
-
-
-
-    // \}
-
-    /*!
-     * \brief Evaluate the initial value for a control volume.
-     *
-     * For this method, the \a priVars parameter stores primary
-     * variables.
-     */
+    {
+        const auto& volVars = elemVolVars[scv];
+        const Scalar r = volVars.poreInscribedRadius();
+        static const Scalar lambdaFluid = getParam<Scalar>("2.Component.LiquidThermalConductivity");
+        static const Scalar dPadding = getParamFromGroup<Scalar>(this->paramGroup(), "Problem.PaddingThickness");
+        static const Scalar robinShapeFactor = getParamFromGroup<Scalar>(this->paramGroup(), "Problem.RobinShapeFactor", 1.0);
+        const Scalar A = M_PI * r*r * robinShapeFactor;
+
+        return (temperatureIn_ - volVars.temperature())
+            * A * lambdaFluid / (r + dPadding) / (scv.volume() * fvGeometry.gridGeometry().coordinationNumber()[scv.dofIndex()]);
+    }
+
     PrimaryVariables initial(const Vertex& vertex) const
     {
         PrimaryVariables values(0.0);
@@ -356,14 +310,10 @@ public:
     }
 
     int outletPoreLabel() const
-    {
-        return outletIndex_;
-    }
+    { return outletIndex_; }
 
     int inletPoreLabel() const
-    {
-        return inletIndex_;
-    }
+    { return inletIndex_; }
 
     int heaterPoreLabel() const
     { return heaterIndex_; }
@@ -388,8 +338,6 @@ public:
     auto sourceMode() const
     { return sourceMode_; }
 
-    // \}
-
 private:
 
     bool onInletBoundary_(const SubControlVolume& scv) const
@@ -401,6 +349,7 @@ private:
     std::shared_ptr<const CouplingManager> couplingManager_;
     std::shared_ptr<GridVariables> gridVars_;
 
+    std::string problemName_;
     Scalar pressureIn_;
     Scalar pressureOut_;
     Scalar temperatureInitial_;
@@ -418,6 +367,7 @@ private:
     std::vector<Scalar> dirichletValuesForOutput_;
     bool useRobinInlet_;
 };
-} //end namespace
+
+} // end namespace Dumux
 
 #endif
diff --git a/test/porenetwork/solidenergy/CMakeLists.txt b/test/porenetwork/solidenergy/CMakeLists.txt
index 9ec3c3b704a571b0505b517dfce4bbec70bc60a7..f051aa4d597158622764eb2766e4c0cbf4eb128b 100644
--- a/test/porenetwork/solidenergy/CMakeLists.txt
+++ b/test/porenetwork/solidenergy/CMakeLists.txt
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 dune_symlink_to_source_files(FILES grids "params.input")
 
 add_executable(test_porenetwork_solid_energy EXCLUDE_FROM_ALL main.cc)
@@ -5,7 +8,7 @@ add_executable(test_porenetwork_solid_energy EXCLUDE_FROM_ALL main.cc)
 dumux_add_test(NAME test_porenetwork_solid_energy_stationary
               LABELS porenetwork solid energy
               TARGET test_porenetwork_solid_energy
-              CMAKE_GUARD "( dune-subgrid_FOUND AND dune-foamgrid_FOUND AND HAVE_UMFPACK )"
+              CMAKE_GUARD "( dune-foamgrid_FOUND AND HAVE_UMFPACK )"
               COMMAND ${CMAKE_SOURCE_DIR}/bin/testing/runtest.py
               CMD_ARGS  --script fuzzy
                         --files ${CMAKE_SOURCE_DIR}/test/references/test_pnm_solid_energy-reference.vtp
@@ -16,7 +19,7 @@ dumux_add_test(NAME test_porenetwork_solid_energy_stationary
 dumux_add_test(NAME test_porenetwork_solid_energy_transient
               LABELS porenetwork solid energy
               TARGET test_porenetwork_solid_energy
-              CMAKE_GUARD "( dune-subgrid_FOUND AND dune-foamgrid_FOUND AND HAVE_UMFPACK )"
+              CMAKE_GUARD "( dune-foamgrid_FOUND AND HAVE_UMFPACK )"
               COMMAND ${CMAKE_SOURCE_DIR}/bin/testing/runtest.py
               CMD_ARGS  --script fuzzy
                         --files ${CMAKE_SOURCE_DIR}/test/references/test_pnm_solid_energy-reference.vtp
diff --git a/test/porenetwork/solidenergy/main.cc b/test/porenetwork/solidenergy/main.cc
index 23a39b06338d0e534dab50bd8cfab8448eb8c8b0..31e1885fd1a1c7baad98c6587fe998d261f0b1bb 100644
--- a/test/porenetwork/solidenergy/main.cc
+++ b/test/porenetwork/solidenergy/main.cc
@@ -6,7 +6,6 @@
 //
 /*!
  * \file
- *
  * \brief heat conduction test for the pore network model (with solid properties)
  */
 #include <config.h>
diff --git a/test/porenetwork/solidenergy/problem.hh b/test/porenetwork/solidenergy/problem.hh
index 9d05e69091672356ba6f808b19d104437459ba88..867c328a6b1dce0cb9d233ee06e4bd21705e330b 100644
--- a/test/porenetwork/solidenergy/problem.hh
+++ b/test/porenetwork/solidenergy/problem.hh
@@ -11,8 +11,6 @@
 #include <dumux/common/parameters.hh>
 #include <dumux/common/boundarytypes.hh>
 #include <dumux/common/numeqvector.hh>
-
-// base problem
 #include <dumux/porousmediumflow/problem.hh>
 
 namespace Dumux {
@@ -53,18 +51,9 @@ public:
         rightIndex_ = getParam<int>("Problem.RightIndex");
     }
 
-    /*!
-     * \brief The problem name.
-     */
     const std::string& name() const
-    {
-        return problemName_;
-    }
+    { return problemName_; }
 
-    /*!
-     * \brief Specifies which kind of boundary condition should be
-     *        used for which equation on a given boundary control volume.
-     */
     BoundaryTypes boundaryTypes(const Element &element, const SubControlVolume& scv) const
     {
         BoundaryTypes values;
@@ -86,9 +75,6 @@ public:
         return value;
     }
 
-    /*!
-     * \brief Evaluates the boundary conditions for a Dirichlet control volume.
-     */
     PrimaryVariables dirichlet(const Element& element, const SubControlVolume& scv) const
     {
         auto values = initialAtPos(scv.dofPosition()); //onRightBoundary_(scv)
@@ -101,9 +87,6 @@ public:
         return values;
     }
 
-    /*!
-     * \brief Evaluates the initial value for a control volume.
-     */
     PrimaryVariables initialAtPos(const GlobalPosition& pos) const
     {
         PrimaryVariables values(initialTemperature_); //uniform initial temperature
@@ -126,6 +109,7 @@ private:
     int leftIndex_;
     int rightIndex_;
 };
+
 } // end namespace Dumux
 
 #endif
diff --git a/test/porenetwork/solidenergy/properties.hh b/test/porenetwork/solidenergy/properties.hh
index 512754ebd581734433f91101e5a933528e9db7c3..5c0f7ba9487211514393716303c03f8a784810af 100644
--- a/test/porenetwork/solidenergy/properties.hh
+++ b/test/porenetwork/solidenergy/properties.hh
@@ -12,7 +12,6 @@
 #define DUMUX_TEST_PORENETWORK_SOLID_ENERGY_PROPERTIES_HH
 
 #include <dumux/common/properties.hh>
-#include <dumux/io/grid/gridmanager.hh>
 #include <dune/foamgrid/foamgrid.hh>
 
 #include <dumux/porenetwork/solidenergy/model.hh>
@@ -67,7 +66,8 @@ struct HeatConductionType<TypeTag, TTag::PNMSolidModel>
 private:
     using Scalar = GetPropType<TypeTag, Properties::Scalar>;
 public:
-    using type = PoreNetwork::TruncatedPyramidGrainFouriersLaw<Scalar>; //from grainfourierslaw.hh (specified in solidenergy/model.hh)
+    // from grainfourierslaw.hh (specified in solidenergy/model.hh)
+    using type = PoreNetwork::TruncatedPyramidGrainFouriersLaw<Scalar>;
 };
 
 } // end namespace Dumux::Properties