Shear stress on surface
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Need macro to give shear stress Macro used in the following code snippet: { real S[ND_3]; NV_V(S,=,F_STORAGE_R_N3V(f,t,SV_WALL_SHEAR)) } This macro actually returns shear force, which is a vector. The shear stress tnesor must be gotten from the velocity gradient and the viscosity |
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