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tdisable vertical pressure forces at the top wall - sphere - GPU-based 3D discr… |
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git clone git://src.adamsgaard.dk/sphere |
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--- |
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commit 2fcfb8e66a446d872d8774f9d149a72649ac1e0f |
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parent 62db27fa140c1c6318255997a5d8cde1cda89f92 |
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Author: Anders Damsgaard <[email protected]> |
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Date: Mon, 17 Nov 2014 10:28:23 +0100 |
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disable vertical pressure forces at the top wall |
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Diffstat: |
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M src/darcy.cuh | 10 +++++++--- |
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1 file changed, 7 insertions(+), 3 deletions(-) |
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--- |
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diff --git a/src/darcy.cuh b/src/darcy.cuh |
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t@@ -541,9 +541,9 @@ __global__ void findDarcyPressureForce( |
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Float p_zp = dev_darcy_p[d_idx(i_x,i_y,i_z+1)]; |
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// Add Neumann BC at top wall |
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- if (i_z >= wall0_iz - 1) |
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+ /*if (i_z >= wall0_iz - 1) |
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p_zp = p; |
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- //p_zp = p_zn; |
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+ //p_zp = p_zn;*/ |
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// find particle volume (radius in x.w) |
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const Float V = 4.0/3.0*M_PI*x.w*x.w*x.w; |
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t@@ -557,12 +557,16 @@ __global__ void findDarcyPressureForce( |
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// find pressure gradient force plus buoyancy force. |
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// buoyancy force = weight of displaced fluid |
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// f_b = -rho_f*V*g |
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- const Float3 f_p = -1.0*grad_p*V/(1.0 - phi); |
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+ Float3 f_p = -1.0*grad_p*V/(1.0 - phi); |
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//- devC_params.rho_f*V*MAKE_FLOAT3( |
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//devC_params.g[0], |
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//devC_params.g[1], |
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//devC_params.g[2]); |
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+ // Add Neumann BC at top wall |
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+ if (i_z >= wall0_iz - 1) |
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+ f_p.z = 0.0; |
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+ |
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/*printf("%d,%d,%d findPF:\n" |
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"\tphi = %f\n" |
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"\tp = %f\n" |
