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Melting of sphere in box

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Old   April 12, 2017, 07:59
Default Melting of sphere in box
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Hi,

I am simulating the melting of sphere in a box in 2D. The problem Specifications are:

I.C. T_melt=1873 K
T_sphere=300 K

B.C. T_wall=1873 K
vel_interface=(k_f*(dT/dr)-h*(T_melt-T_mpshell))/(rho*delta_H)

The sphere_melt interface is moving with the 2nd boundary condition using dynamic mesh. The UDF for for dynamic mesh :

#include "udf.h"
#include "math.h"
#include "dynamesh_tools.h"

#define k_f 35
#define h 2000
#define T_bath 1873
#define T_mpshell 1423
#define rho 7000
#define delta_H 275753
DEFINE_CG_MOTION(vel_interface,dt,vel,omega,time,d time)
{
Thread *t;
cell_t c;
real x[ND_ND];
face_t f;
t=DT_THREAD(dt);
begin_f_loop(f,t)
{
F_CENTROID(x,f,t);
vel[0]=(k_f*C_T_G(c,t)[0]-h*(T_bath-T_mpshell))/(rho*delta_H);
vel[1]=(k_f*C_T_G(c,t)[1]-h*(T_bath-T_mpshell))/(rho*delta_H);
}
end_f_loop(f,t)
}

When I running the solution I get error : received a fatal signal (Segmentation fault)

Please help me to get rid of this error.

Thanks in advance

link for the problem image:

https://drive.google.com/file/d/0B3Z...ew?usp=sharing
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dynamic meshing, solidification/melting, udf and programming

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