GRHydro: Option to reconstruct W*vel (W = Lorentz factor) instead of just the primitive velocity 'vel'.

This ensures that the Lorentz factor can never become unphysical during reconstruction.
This patch is necessary for NS collapse when ePPM+Refluxing is used.

The idea is due to Roland.

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

git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinEvolve/GRHydro/trunk@416 c83d129a-5a75-4d5a-9c4d-ed3a5855bf45

1 files changed, 3 insertions, 0 deletions

diff --git a/param.ccl b/param.ccl
index a89d8cc..e66e529 100644
--- a/param.ccl
+++ b/param.ccl
@@ -231,6 +231,9 @@ real enhanced_ppm_C4 "Parameter for enhancecd ppm limiter. This is for the addit
    0:1 :: "must be greater than or equal to 0, and not larger than 1"
 } 0.0
 
+boolean reconstruct_Wv "Reconstruct the primitive velocity W_Lorentz*vel, rather than just vel." STEERABLE=ALWAYS
+{
+} no
 
 int eno_order "The order of accuracy of the ENO reconstruction"
 {