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wall shear not right!

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Old   July 6, 2004, 19:45
Default wall shear not right!
Patrick Louis
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In udf I used:

NV_V(wallshear,=,C_STORAGE_R_NV(f,tf,SV_WALL_SHEAR ));

to get the wall shear. But the results seems a mess. I tested in a simple channel flow. Some point the wall shear is negative, some is positive. It is not right at all. But when I use XY plot, it seems right. I am not sure if the udf macro I used fetched the right variable. Do you know how the get the wall shear? Thanks!
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Old   July 6, 2004, 23:42
Default Re: wall shear not right!
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Yes, the macro indeed gives you the wall shear force vector ( it has 3 components ) .

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