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UDF boundary

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Old   March 11, 2019, 23:14
Default UDF boundary
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Li Xiaoying
Join Date: Jun 2018
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#include "udf.h"
#include<math.h>

DEFINE_PROFILE(inlet_z_velocity_A, t, i)
{
real x[ND_ND];
real a;
real y;
face_t f;
begin_f_loop(f,t)
{
F_CENTROID(x,f,t);
a=x[0];
y=x[1];

if ((-4.2 <= a) && (a < -3.945))
F_PROFILE(f, t, i) = -0.088*pow(y, 5) - 0.0737*pow(y, 4) + 0.1308*pow(y, 3) + 0.0682*pow(y, 2) - 0.0665*y + 0.3545;

if ((-3.945 <= a) && (a < -3.675))
F_PROFILE(f, t, i) = 0.1012*pow(y, 6) + 0.0131*pow(y, 5) - 0.2807*pow(y, 4) - 0.0547*pow(y, 3) + 0.1929*pow(y, 2) + 0.0411*y + 0.3549;

if ((-3.675 <= a) && (a < -3.405))
F_PROFILE(f, t, i) = 0.046*pow(y, 6) + 0.0045*pow(y, 5) - 0.1283*pow(y, 4) + 0.0002*pow(y, 3) + 0.1014*pow(y, 2) - 0.0034*y + 0.3668;

if ((-3.405 <= a) && (a < -3.135))
F_PROFILE(f, t, i) = 0.0752*pow(y, 6) + 0.0194*pow(y, 5) - 0.2078*pow(y, 4) - 0.0361*pow(y, 3) + 0.1624*pow(y, 2) + 0.0196*y + 0.3454;

if ((-3.135 <= a) && (a < -2.865))
F_PROFILE(f, t, i) = -0.6608*pow(y, 6) - 0.0257*pow(y, 5) + 1.4898*pow(y, 4) + 0.0128*pow(y, 3) - 0.9274*pow(y, 2) + 0.012*y + 0.5025;

if ((-2.865 <= a) && (a < -2.595))
F_PROFILE(f, t, i) = 0.164*pow(y, 6) + 0.0698*pow(y, 5) - 0.3511*pow(y, 4) - 0.087*pow(y, 3) + 0.2244*pow(y, 2) + 0.0301*y + 0.3417;

if ((-2.595 <= a) && (a < -2.325))
F_PROFILE(f, t, i) = -0.0257*pow(y, 5) - 0.0798*pow(y, 4) + 0.022*pow(y, 3) + 0.0863*pow(y, 2) - 0.008*y + 0.3762;

if ((-2.325 <= a) && (a < -2.055))
F_PROFILE(f, t, i) = 0.05*pow(y, 6) - 0.0019*pow(y, 5) - 0.1895*pow(y, 4) + 0.0122*pow(y, 3) + 0.1427*pow(y, 2) - 0.0089*y + 0.3693;

if ((-2.055 <= a) && (a <= -1.8))
F_PROFILE(f, t, i) = 0.1494*pow(y, 6) - 0.0899*pow(y, 5) - 0.3818*pow(y, 4) + 0.2512*pow(y, 3) + 0.2011*pow(y, 2) - 0.1668*y + 0.4045;
}
end_f_loop(f,t)
}
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