From 81e0bae433b15b0cc6602f60cd81a6dfa97301d7 Mon Sep 17 00:00:00 2001
From: Anna Mareike Kostelecky <anmako96@web.de>
Date: Mon, 7 Oct 2024 11:58:14 +0200
Subject: [PATCH] [material][components][granite] add literature for thermal
 conductivity value

---
 dumux/material/components/granite.hh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/dumux/material/components/granite.hh b/dumux/material/components/granite.hh
index 9f8a552ca4..3f63350bd2 100644
--- a/dumux/material/components/granite.hh
+++ b/dumux/material/components/granite.hh
@@ -7,7 +7,7 @@
 /*!
  * \file
  * \ingroup Components
- * \brief Properties of pure molecular oxygen \f$O_2\f$.
+ * \brief Properties of granite.
  */
 #ifndef DUMUX_GRANITE_HH
 #define DUMUX_GRANITE_HH
@@ -67,6 +67,10 @@ public:
 
     /*!
      * \brief Thermal conductivity of the component \f$\mathrm{[W/(m*K)]}\f$ as a solid.
+     * source: Birch, Albert Francis, and Harry Clark. "The thermal conductivity of rocks
+     *  and its dependence upon temperature and composition."
+     * American Journal of Science 238.8 (1940): 529-558.
+     * Table 6: \lambda(T=273.15 K)=6.6 cal/(cm*s*degC) and 1 cal /(cm*s*degC) = 418.4 W/(m*K)
      * \param temperature temperature of component in \f$\mathrm{[K]}\f$
      */
     static Scalar solidThermalConductivity(Scalar temperature)
-- 
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