tDot product for finding path along force - 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 a6c68eb862e5d1c07ac66791537b3ad8b6a139f6
 (DIR) parent 8f77eaf4a0ec03724a4555b4b44d0291194a237d
 (HTM) Author: Anders Damsgaard <adc@geo.au.dk>
       Date:   Tue,  9 Oct 2012 14:02:10 +0200
       
       Dot product for finding path along force
       
       Diffstat:
         M src/contactmodels.cuh               |       2 +-
       
       1 file changed, 1 insertion(+), 1 deletion(-)
       ---
 (DIR) diff --git a/src/contactmodels.cuh b/src/contactmodels.cuh
       t@@ -386,7 +386,7 @@ __device__ void contactLinear(Float3* F, Float3* T,
              // The energy lost from the tangential spring is dissipated as heat
              //*es_dot += -dot(vel_t_ab, f_t);
              //*es_dot += length(delta_t0 - delta_t) * devC_k_t / devC_dt; // Seen in EsyS-Particle
       -      *es_dot += length(delta_t0 - delta_t) * length(f_t) / devC_dt; 
       +      *es_dot += fabs(dot(delta_t0 - delta_t, f_t)) / devC_dt; 
        
            } else { // Static case