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#include "udf.h"
#include "metric.h"
#include "sg.h"
#include "mem.h"
#include "math.h"

#define Dp 0.00006
#define zeta 0.6
DEFINE_PROFILE(Velocity_inlet,thread,position)
{
        real u;
        real t;
        face_t f;
        begin_f_loop(f,thread)
        {
                t=RP_Get_Real("flow-time";
                F_PROFILE(f,thread,position)=5*sin(188.5*t);
        }
        end_f_loop(f,thread)
}
DEFINE_PROFILE(Pressure_outlet,thread,position)
{
        real p;
        real t;
        face_t f;
        begin_f_loop(f,thread)
        {
                t=RP_Get_Real("flow-time";
                F_PROFILE(f,thread,position)=4500000+1170000*sin(188.5*t);
        }
        end_f_loop(f,thread)
}
/*3.
This module calculates the Heat transfer coefficient h(loc) for both the solid
and the fluid phase based on the particle Reynolds Number Rep.

*/

double heat_t_coeff(cell_t c,Thread *t)
{
        //FILE *t;
        //*HTC = (kf*(2+1.1Pr^0.333*Re^0.6))/dp;*/
        double Pr,Re,HTC,U,dv,Rep,Area,Ux;
        //Interstial area between the solid and the Fluid
        Area=4.0*(1-zeta)/Dp;
        //void diameter
        dv=(4.0*zeta)/Area;
        //Average velocity
        U=sqrt(pow(C_U(c,t),2.)+pow(C_V(c,t),2.));
        // modified Reynolds Number based on the void diameter
        Re=(U*dv*C_R(c,t))/C_MU_EFF(c,t);
        //Particle Reynolds Number based on Diamter of the particle(Dp).
//        Rep = (U*Dp*C_R(c,t))/C_MU_EFF(c,t);
        Rep=(U*Dp*C_R(c,t))/C_MU_L(c,t);

        //Fluid Prandtl Number
//        Pr = (C_MU_EFF(c,t)*C_CP(c,t))/C_K_L(c,t);
//        Pr = (C_MU_L(c,t)*C_CP(c,t))/therm_conduct(C_T(c,t)) ;
        Pr=(C_MU_L(c,t)*C_CP(c,t))/C_K_L(c,t) ;


//        C_UDMI(c,t,1)=therm_conduct(C_T(c,t));  
       
        /*Use this part of the code for E2 model of HTC*/
//    printf("hello";
//        HTC = (C_K_L(c,t)*(2.0 +(1.1*pow(Pr,0.333)*pow(Rep,0.6))))/Dp;
//        HTC = (therm_conduct(C_T(c,t)) *(2.0 +(1.1*pow(Pr,0.333)*pow(Rep,0.6))))/Dp;
//        HTC = (C_K_L(c,t)*(2.0 +(1.1*pow(Pr,0.333)*pow(Rep,0.6))))/Dp;
        HTC=(C_K_L(c,t)*(2.0 +(1.1*pow(Pr,0.333)*pow(Rep,0.6))))/Dp;
        /*Use this part of code for E2 model of HTC

if(Rep < 100)
                HTC=0.004*(C_K_EFF(c,t)/dv)*pow(Pr,0.3333)*pow(Re,1.35);
        else
                HTC =0.0156*(C_K_EFF(c,t)/dv)*pow(Pr,0.3333)*pow(Re,1.04);
        */
        return HTC;
}

³õʼ»¯µÄʱºò±¨´íÈçÏ£º
Error:  received a fatal signal (Segmentation fault).
Error Object: #f
chip-exec: heat_t_coeff: wrong return type: void udf function expected
Error:  received a fatal signal (Segmentation fault).

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