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DEFINE_PROFILE(viscous_resistance, t, i)     /*Õ³ÖÍ×èÁ¦*/
{
real x[ND_ND];
real y,dp;
cell_t c ;
thread *t;
C_CENTROID(x,c,t);
y=x[1];
if(y>0.06)
dp=0.006;
else
dp=0.003;
begin_c_loop(c, t)
{
F_PROFILE(c, t,i) =(150.*pow((1-epsi),2))/pow(epsi,3)*pow(dp,2);
}
end_c_loop(c, t)
}
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