From 94b58c583dfaf02b14a589db3d9dd4470bd02053 Mon Sep 17 00:00:00 2001
From: Leon Keim <leon.keim@googlemail.com>
Date: Thu, 29 Sep 2022 13:58:51 +0200
Subject: [PATCH] Fouries law flux documentation
---
dumux/flux/fourierslaw.hh | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/dumux/flux/fourierslaw.hh b/dumux/flux/fourierslaw.hh
index 934cdd80d6..9f0b644a9f 100644
--- a/dumux/flux/fourierslaw.hh
+++ b/dumux/flux/fourierslaw.hh
@@ -19,9 +19,21 @@
/*!
* \file
* \ingroup Flux
- * \brief Fourier's law specialized for different discretization schemes
- * This file contains the data which is required to calculate
- * diffusive mass fluxes due to molecular diffusion with Fourier's law.
+ * \brief Diffusive heat flux according to Fourier's law
+ *
+ * According to Fourier's law, the heat flux is proportional to the gradient of the temperature. \n
+ * The proportonality constant is the thermal conductivity \f$\lambda \f$. \n
+ * The flux is calculated as:\n
+ * \n
+ * \f[
+ * \textbf{j}_{heat} = - \lambda \; \textbf{grad}\, T
+ * \f]
+ * \n
+ * \n
+ * In general, for porous medium local thermal equilibrium is assumed.\n
+ * To account for effects of porous media, an effective thermal conductivity \f$\lambda_{pm}\f$ is used.\n
+ * Models for the effective thermal conductivity are for example: Johansen \cite johansen1977, simple fluid lumping, Somerton \cite somerton1974.
+ *
*/
#ifndef DUMUX_FLUX_FOURIERS_LAW_HH
#define DUMUX_FLUX_FOURIERS_LAW_HH
--
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