UDF:multiphase wall shear
 

Hi all, i simuate two-phase flow, i want to modify second phase x direction wall shear. The udf is as follow:

#include "udf.h"

DEFINE_PROFILE(wall_x_velocity, thread, position) { real x[ND_ND]; real y,mu_s,usx,xvel_s,fd; face_t f; cell_t c; int ID = 4; /*wall id=4 */ Domain *domain; domain = Get_Domain(3); Thread *thread = Lookup_Thread(domain,ID);

fd = F_D(f,thread);

mu_s = C_MU_L(c,thread);

begin_f_loop(f, thread)

{

F_CENTROID(x,f,thread);

y = x[0];

F_PROFILE(f, thread, position) = xvel_s *mu_s/(1.0E-5/pow(fd,0.3333));

} end_f_loop(f, thread) }

when i interpret UDF, there is error: Error: cpp -ID:\FLUENT.INC\fluent6.0/src -ID:\FLUENT.INC\fluent6.0/cortex/src -ID:\FLUENT.INC\fluent6.0/client/src -ID:\FLUENT.INC\fluent6.0/multiport/src -I. -DUDFCONFIG_H="<udfconfig.h>" d:\libudf\src\wall.cError: d:\libudf\src\wall.c: line 12: parse error.

line 12 means this line "int ID = 4; /*wall id=4 */"

i don't know this mean, ID=4 is gotten from boundary conditon panel, or i am wrong at some place.

somebody may help me. If you've example about multiphase UDF, i would appreciate it very much. thanks in advance