From 435d20790aa1f4c0a2b0f27c50f43649bdd58f78 Mon Sep 17 00:00:00 2001
From: rhaas <rhaas@c83d129a-5a75-4d5a-9c4d-ed3a5855bf45>
Date: Thu, 28 Mar 2013 01:46:26 +0000
Subject: GRHydro: implemented H viscosity for HLLE solver to eliminate the
 carbuncle instability. Tested with shocktube and TOV. Not yet tested for
 problem where carbuncles occur.

From: Christian Reisswig <reisswig@scriwalker.(none)>

git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinEvolve/GRHydro/trunk@491 c83d129a-5a75-4d5a-9c4d-ed3a5855bf45
---
 param.ccl | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'param.ccl')

diff --git a/param.ccl b/param.ccl
index 7074529..44f6b22 100644
--- a/param.ccl
+++ b/param.ccl
@@ -310,6 +310,10 @@ keyword numerical_viscosity "How to compute the numerical viscosity"
   "normal"	:: "Normal numerical viscosity"
 } "fast"
 
+boolean apply_H_viscosity "H viscosity is useful to fix the carbuncle instability seen at strong shocks"
+{
+} no
+
 keyword bound "Which boundary condition to use - FIXME"
 {
   "flat"	:: "Zero order extrapolation"
-- 
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