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#include<math.h>
#include "udf.h"
#define k 2*3.14159265/8.0
#define H 0.8
#define w 2.617994
#define h 4.0
#define T 2*3.14159265/2.617994
#define deltax 0.1
DEFINE_SOURCE(zbc_source,c,t,dS,eqn)
{
real x[ND_ND];
real q,source;
real y;
real dt;
dt=RP_Get_Real("flow-time" );
C_CENTROID(x,c,t);
y=x[1];
q=C_R(c,t)*H*w*(cosh(k*y+k*h)*cos(w*dt)/sinh(k*h)+3/8*H*k*cosh(2*k*y+2*k*h)*cos(2*w*dt)/(sinh(k*h)*sinh(k*h)*sinh(k*h)*sinh(k*h)))/deltax;
source=q;
dS[eqn]=0;
return source;
}
DEFINE_SOURCE(zbx_source,c,t,dS,eqn)
{
real x[ND_ND];
real q,source;
real y;
real dt;
dt=RP_Get_Real("flow-time" ) ;
C_CENTROID(x,c,t) ;
y=x[1];
q=C_R(c,t)*H*w*(cosh(k*y+k*h)*cos(w*dt)/sinh(k*h)+3/8*H*k*cosh(2*k*y+2*k*h)*cos(2*w*dt)/(sinh(k*h)*sinh(k*h)*sinh(k*h)*sinh(k*h)))/deltax;
source=C_R(c,t)*C_U(c,t)*q;
dS[eqn]=C_R(c,t)*q;
return source;
}
DEFINE_SOURCE(zby_source,c,t,dS,eqn)
{
real x[ND_ND];
real q,source,q1;
real y;
real dt;
dt=RP_Get_Real("flow-time" ) ;
C_CENTROID(x,c,t);
y=x[1];
q=C_R(c,t)*H*w*(cosh(k*y+k*h)*cos(w*dt)/sinh(k*h)+3/8*H*k*cosh(2*k*y+2*k*h)*cos(2*w*dt)/(sinh(k*h)*sinh(k*h)*sinh(k*h)*sinh(k*h)))/deltax;
q1=C_R(c,t)*H*w*(k*sinh(k*y+k*h)*cos(w*dt)/sinh(k*h)+3/4*H*k*k*sinh(2*k*y+2*k*h)*cos(2*w*dt)/(sinh(k*h)*sinh(k*h)*sinh(k*h)*sinh(k*h)))/deltax;
source=C_R(c,t)*C_V(c,t)*q+1/3*C_R(c,t)*C_MU_EFF(c,t)*q1;
dS[eqn]=C_R(c,t)*q;
return source;
}

[ Last edited by 1592203609 on 2014-3-20 at 17:59 ]
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