[ali.lajevardi]

I write a UDF ,but it's displayed error after that interpreted :
UDF for specifying a temperature-dependent thermal conductivity property
************************************************** ********************/
#include "udf.h"

DEFINE_PROPERTY(cell_thermalconductivity,cell,thre ad)
{
# define KS 36 /*thermal conductivity nanoparticle*/
# define BETA 0.1
# define VFR 0.01 /*volume fraction*/
# define PW 998.2 /*densits of water*/
# define PS 3970 /* density of nano particles*/
# define CPW 4182 /*heat capacity of water*/
# define CPS 765 /* heat capacity of nanoparticle*/
# define DH 0.0005605 /*diameter hydraulical*/
# define VELA 1.2281 /* axial velocity*/
# define C 0.005
real thermalconductivity;
real knf;
real d;
real kw;
real temp;
{temp = C_T(cell, thread)
kw= -0.000008*pow(temp,2)+.0063*temp-.05632;
}
knf=kw*((KS+2*kw+2*(KS-kw)*pow((1+BETA),3)*VFR)/(KS+2*kw-(KS-kw)*pow((1+BETA),3)*VFR));
d=C*((PS*CPS)*VFR+(PW*CPW)*(1-VFR))*VFR*DH*VELA;
thermalconductivity=knf+d;
return thermalconductivity;
}
next UDF IS:
/************************************************** *******************
UDF for specifying a temperature-dependent viscosity property
************************************************** ********************/
#include "udf.h"

DEFINE_PROPERTY(cell_viscosity,cell,thread)
{real munf;
real muw;
#define VFR 0.01
real temp = C_T(cell, thread);
if (temp > 297.)
muw = (2.414*pow(10,-5))*pow(10,(247.8/(temp-140.0)));
munf=muw*(1+(2.5*VFR))
return munf;
}

I hope , somebody could help me.
thanks.