diff options
Diffstat (limited to 'implosion.py')
| -rw-r--r-- | implosion.py | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/implosion.py b/implosion.py index e33f1a8..3af4a9a 100644 --- a/implosion.py +++ b/implosion.py @@ -73,21 +73,26 @@ __kernel void collide_and_stream(__global __write_only float* f_a, const float d = f0 + f1 + f2 + f3 + f4 + f5 + f6 + f7 + f8; - const float2 v = (float2)( + float2 v = (float2)( (f5 - f3 + f2 - f6 + f8 - f0) / d, (f1 - f7 + f2 - f6 - f8 + f0) / d ); + + if ( m == 2 ) { + v = (float2)(0.0f, 0.0f); + } + const float dotv = dot(v,v); - f0 = (1.0f - $tau) * f0 + $tau * f_eq(w[0], d,v,-1, 1, dotv); - f1 = (1.0f - $tau) * f1 + $tau * f_eq(w[1], d,v, 0, 1, dotv); - f2 = (1.0f - $tau) * f2 + $tau * f_eq(w[2], d,v, 1, 1, dotv); - f3 = (1.0f - $tau) * f3 + $tau * f_eq(w[3], d,v,-1, 0, dotv); - f4 = (1.0f - $tau) * f4 + $tau * f_eq(w[4], d,v, 0, 0, dotv); - f5 = (1.0f - $tau) * f5 + $tau * f_eq(w[5], d,v, 1, 0, dotv); - f6 = (1.0f - $tau) * f6 + $tau * f_eq(w[6], d,v,-1,-1, dotv); - f7 = (1.0f - $tau) * f7 + $tau * f_eq(w[7], d,v, 0,-1, dotv); - f8 = (1.0f - $tau) * f8 + $tau * f_eq(w[8], d,v, 1,-1, dotv); + f0 += $tau * (f_eq(w[0], d,v,-1, 1, dotv) - f0); + f1 += $tau * (f_eq(w[1], d,v, 0, 1, dotv) - f1); + f2 += $tau * (f_eq(w[2], d,v, 1, 1, dotv) - f2); + f3 += $tau * (f_eq(w[3], d,v,-1, 0, dotv) - f3); + f4 += $tau * (f_eq(w[4], d,v, 0, 0, dotv) - f4); + f5 += $tau * (f_eq(w[5], d,v, 1, 0, dotv) - f5); + f6 += $tau * (f_eq(w[6], d,v,-1,-1, dotv) - f6); + f7 += $tau * (f_eq(w[7], d,v, 0,-1, dotv) - f7); + f8 += $tau * (f_eq(w[8], d,v, 1,-1, dotv) - f8); f_a[0*N_CELLS + gid] = f0; f_a[1*N_CELLS + gid] = f1; @@ -142,7 +147,7 @@ class D2Q9_BGK_Lattice: for x in range(1,self.nX-1): for y in range(1,self.nY-1): if x == 1 or y == 1 or x == self.nX-2 or y == self.nY-2: - self.np_material[self.idx(x,y)] = -1 + self.np_material[self.idx(x,y)] = 2 else: self.np_material[self.idx(x,y)] = 1 @@ -215,9 +220,10 @@ lastStat = time.time() for i in range(1,nUpdates+1): if i % nStat == 0: LBM.sync() + #LBM.show(i) print("i = %4d; %3.0f MLUPS" % (i, MLUPS(LBM.nCells, nStat, time.time() - lastStat))) lastStat = time.time() LBM.evolve() -LBM.show(nUpdates) +#LBM.show(nUpdates) |