CFD Online Discussion Forums - Requesting for a udf for parabolic flow on given boundary condition

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Sadia Khan

June 29, 2018 03:48

Requesting for a udf for parabolic flow on given boundary condition

Computational Domain Vθ = 0
Inlet Vr = 0
Vz = 0.265(1 - (r/R)2)
(parabolic velocity profile)
Symmetry Line Vr = 0
Wall-blood interface Vz = 0 (no-slip condition)
Vr = 0 (non-porous wall)

diameter of the artery = 3 mm
https://biomedical-engineering-onlin.../1475-925X-8-8
i need the udf of this paper,

zobekenobe

July 2, 2018 14:57

Code:

#include "udf.h"



DEFINE_PROFILE(inlet_velocity, ft, ind)

{

    face_t f;

    real pos[ND_ND];

    real R = 3;

    real V;

    real centre = 0.0;



    begin_f_loop(f, ft)

    {

        F_CENTROID(pos,f,ft);

        V = 0.265*(1-2*(fabs(pos[1]-centre)/R));

        F_PROFILE(f,ft,ind) = V;

    }

    end_f_loop(f,ft)

}

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