From ad395f0cac77ca402b7a8ba7f9ea1563c2c112bc Mon Sep 17 00:00:00 2001
From: Timo Koch <timo.koch@iws.uni-stuttgart.de>
Date: Mon, 7 Sep 2020 17:12:05 +0200
Subject: [PATCH] [bugfix] Fix compiler error introduced in !2236

---
 dumux/freeflow/navierstokes/staggered/localresidual.hh | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/dumux/freeflow/navierstokes/staggered/localresidual.hh b/dumux/freeflow/navierstokes/staggered/localresidual.hh
index 6baa841272..b797a4b64a 100644
--- a/dumux/freeflow/navierstokes/staggered/localresidual.hh
+++ b/dumux/freeflow/navierstokes/staggered/localresidual.hh
@@ -34,6 +34,14 @@
 
 namespace Dumux {
 
+namespace Impl {
+template<class T>
+static constexpr bool isRotationalExtrusion = false;
+
+template<int radialAxis>
+static constexpr bool isRotationalExtrusion<RotationalExtrusion<radialAxis>> = true;
+} // end namespace Impl
+
 // forward declaration
 template<class TypeTag, DiscretizationMethod discMethod>
 class NavierStokesResidualImpl;
@@ -172,7 +180,7 @@ public:
         // Axisymmetric problems in 2D feature an extra source terms arising from the transformation to cylindrical coordinates.
         // See Ferziger/Peric: Computational methods for fluid dynamics chapter 8.
         // https://doi.org/10.1007/978-3-540-68228-8 (page 301)
-        if constexpr (ModelTraits::dim() == 2 && std::is_same_v<Extrusion, RotationalExtrusion<Extrusion::radialAxis>>)
+        if constexpr (ModelTraits::dim() == 2 && Impl::isRotationalExtrusion<Extrusion>)
         {
             if (scvf.directionIndex() == Extrusion::radialAxis)
             {
-- 
GitLab