distorted 3d velocity profile
I used following UDF for fully developed 3d profile in a pipe. The problem is that it doesn,t results in a smooth profile. When I check velocity magnitude contour at the inlet the profile is distorted (However it gives smooth paraboloid plot for x-velocity).
DEFINE_PROFILE(inlet_x_velocity, thread, position) { real x[ND_ND]; real r; face_t f; begin_f_loop(f, thread) { F_CENTROID(x,f,thread); r = sqrt(pow(x[1],2)+pow(x[2],2)); F_PROFILE(f, thread, position) = 0.019865*(1-pow (r/0.0254,2)); } end_f_loop(f, thread) } |
Re: distorted 3d velocity profile
You should check the profile at the cross section a little post of the inlet to see if the profile is still distorted or just same as what you defined.
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