tcorrect wall velocity - sphere - GPU-based 3D discrete element method algorithm with optional fluid coupling
 (HTM) git clone git://src.adamsgaard.dk/sphere
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       ---
 (DIR) commit 65e67b2dc83a0d82bfca2bb50ac92992d420b604
 (DIR) parent f2c74457b53b987cdd2f6687f33a7d861d7644c8
 (HTM) Author: Anders Damsgaard <anders.damsgaard@geo.au.dk>
       Date:   Sun, 22 Jun 2014 22:02:46 +0200
       
       correct wall velocity
       
       Diffstat:
         M python/shortening.py                |       3 ++-
       
       1 file changed, 2 insertions(+), 1 deletion(-)
       ---
 (DIR) diff --git a/python/shortening.py b/python/shortening.py
       t@@ -156,7 +156,8 @@ sim.gamma_t[0] = 0.0
        
        # push down upper wall
        compressional_strain = 0.5
       -sim.uniaxialStrainRate(wvel = -compressional_strain*Lz/sim.time_total[0])
       +sim.uniaxialStrainRate(wvel =
       +        -compressional_strain*(z_max - z_min)/sim.time_total[0])
        
        sim.run(dry=True)
        sim.run()