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wall shear force with VOF

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Old   July 27, 2007, 06:28
Default wall shear force with VOF
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Hello everbody,

I am just working on a simple UDF to calculate the wall shear force, it looks like



Domain *d = Get_Domain(1); /* 1: mixture*/

Thread *ft;

face_t f;

real shear_force[3];

real shear_force_0 = 0.0, shear_force_1 = 0.0, shear_force_2 = 0.0;







NV_V(shear_force, =, F_STORAGE_R_N3V ,ft,SV_WALL_SHEAR));

shear_force_0 += shear_force[0];

shear_force_1 += shear_force[1];

shear_force_2 += shear_force[2];






Anyway, the UDF results in the case of a transient two-phase VoF simulation differ from that one calculated by Fluent┤s force report. If a single phase flow is used, the UDF results do well agree to the standard force report. Has anybody experience with wall shear calculation for the VoF model? Thank┤s in advance
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