From b5b2fd70b65925233d1dfa514cba867f4cdc73e8 Mon Sep 17 00:00:00 2001
From: Timo Koch <timo.koch@iws.uni-stuttgart.de>
Date: Wed, 25 Apr 2018 17:26:25 +0200
Subject: [PATCH] [fickslaw][network] Consider that transmissibilities can be
 zero

---
 dumux/discretization/cellcentered/tpfa/fickslaw.hh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dumux/discretization/cellcentered/tpfa/fickslaw.hh b/dumux/discretization/cellcentered/tpfa/fickslaw.hh
index dd8bd86300..e21792b7a5 100644
--- a/dumux/discretization/cellcentered/tpfa/fickslaw.hh
+++ b/dumux/discretization/cellcentered/tpfa/fickslaw.hh
@@ -242,7 +242,8 @@ private:
             sumTi += outsideTi;
             sumXTi += outsideTi*outsideVolVars.moleFraction(phaseIdx, compIdx);
         }
-        return sumXTi/sumTi;
+
+        return sumTi > 0 ? sumXTi/sumTi : 0;
     }
 
     //! compute the density at branching facets for network grids as arithmetic mean
-- 
GitLab