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#include "udf.h"
#define E 10000.0
#define r 0.06
#define a0 8.85e-12
#define a1 80*8.85e-12
#define a2 1.000585*8.85e-12
#define b1 4.6e-5
#define b2 1e-3
DEFINE_SOURCE(maxwell_source,c,t,dS,eqn)
{       
real x[ND_ND];
real T1,T2,source;
C_CENTROID(x,c,t);
T1=(9*a0*a2*(b1/b2-1)*E*E)/(2*(a1/a2+2)*(a1/a2+2));
T2=9*a0*a2*((a1/a2)*(a1/a2)-2*(b1/b2)+1)*E*E*x[1]*x[1]/(r*r*2*(a1/a2+2)*(a1/a2+2));
source=T1+T2;
dS[eqn]=9*a0*a2*((a1/a2)*(a1/a2)-2*(b1/b2)+1)*E*E*x[1]/(r*r*(a1/a2+2)*(a1/a2+2));
return source;
}
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