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dashman

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[½»Á÷] Fluent ¶þάˮ²ÛÍÆ°åÔ첨UDF ÈçºÎ¸Ä³Éµ¥»ú¶àºË²¢ÐмÆËã

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#include "udf.h"
#define T     4.0  
#define S     3.0
#define G     9.81
#define PI    3.14159
DEFINE_CG_MOTION(pushboard,dt,vel,omega,time,dtime)
  {
  
    real ww=0.0;
     ww=2*PI/T;
     vel[0] = ww*S*cos(ww*time)/2.0;  
   
   }
DEFINE_SOURCE(Xx_source,c,t,dS,eqn)/*Ïû²¨*/
{
real x[ND_ND];
real x_source;
real y;
real chan;
real xishu;
real time = RP_Get_Real("flow-time";

C_CENTROID(x,c,t);
y=x[1];
if( x[0]>= 95&& x[0] <=130)
{

xishu = 8*(x[0]-95)/35;
x_source = -C_U(c,t)*998.2*xishu;
dS[eqn] = -998.2*xishu;  
       
}
return x_source;
}

// y direction momentum //

DEFINE_SOURCE(Xy_source,c,t,dS,eqn)
{
real x[ND_ND];
real y_source;
real y;
real chan;
real xishu;
real time = RP_Get_Real("flow-time";

C_CENTROID(x,c,t);
y=x[1];
if( x[0]>= 95 && x[0] <= 130)
{
xishu =8*(x[0]-95)/35;
y_source = -C_V(c,t)*998.2*xishu;
dS[eqn] = -998.2*xishu;
}
return y_source;
}
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