tUpdated wall integration scheme - sphere - GPU-based 3D discrete element method algorithm with optional fluid coupling
  HTML git clone git://src.adamsgaard.dk/sphere
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       ---
   DIR commit 18f1c3b4859a655a666c6e987412d3dae28d50d7
   DIR parent 2e6fee6cb464d61819b5811d9a6853cf4d95b640
  HTML Author: Anders Damsgaard <adc@geo.au.dk>
       Date:   Tue, 27 Nov 2012 08:50:44 +0100
       
       Updated wall integration scheme
       
       Diffstat:
         M src/integration.cuh                 |      10 +++++-----
       
       1 file changed, 5 insertions(+), 5 deletions(-)
       ---
   DIR diff --git a/src/integration.cuh b/src/integration.cuh
       t@@ -262,14 +262,14 @@ __global__ void integrateWalls(Float4* dev_walls_nx,
              acc = 0.0f;
            }
        
       -    // Update linear velocity
       -    w_mvfd.y += acc * dt;
       -    
            // Update position. Second-order scheme based on Taylor expansion 
       -    //w_nx.w += w_mvfd.y * dt + (acc * dt*dt)/2.0f;
       +    w_nx.w += w_mvfd.y * dt + (acc * dt*dt)/2.0;
        
            // Update position. First-order Euler integration scheme
       -    w_nx.w += w_mvfd.y * dt;
       +    //w_nx.w += w_mvfd.y * dt;
       +
       +    // Update linear velocity
       +    w_mvfd.y += acc * dt;
        
            // Store data in global memory
            dev_walls_nx[idx]   = w_nx;