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DEFINE_INIT(moisure_init,d)
/* The initial solids moisture content, W, is set */
/* and the corresponding humidity, w, of the */
/* intergranular air is calculated */
{
cell_t c;
Thread *t;
real W,Tabs,TC,r,psat,p,w;
/* Loop over all of the cell threads in the bulk of grain */
thread_loop_c(t,d)
{
begin_c_loop(c,t)
{
C_UDMI(c,t,0)=0.1905;
W=C_UDMI(c,t,0);
Tabs=C_T(c,t);
TC=Tabs-273.15;
/* Calculate relative humidity of intergranular air, Eqn 11. */
r=exp(-ACP/(TC+CCP)*exp(-BCP*W));
/* Ensure the air does not become supersaturated */
if(r>0.99)
{ r=0.99;}
psat=6.0e25/pow(Tabs,5) *exp(-6800/Tabs);
p=r*psat;
w=0.622*p/(PATM-p); /* Eqn 12 */
C_UDSI(c,t,0)=w;
}
end_c_loop(c,t);
}
}
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