DEFINE_ON_DEMAND在初始化时出错

daisy0411

我用udm存储uds变量的函数值，udf在解释进fluent时没错儿，但是在初始化前，用define-ececute-on-demond时出错，错误如下：
Error:
FLUENT received fatal signal (ACCESS_VIOLATION)
1. Note exact events leading to error.
2. Save case/data under new name.
3. Exit program and restart to continue.
4. Report error to your distributor.
Error Object: ()
程序贴在下面：
# include "udf.h"
# define domain_ID 2
DEFINE_DIFFUSIVITY(electrical_conductivity,c,t,i)/*扩散系数*/
{
real ele_c;
real x[ND_ND];
C_CENTROID(x,c,t);
if(x[0]>-0.09&&x[0]<0.09)
{
   if(x[1]>0&&x[1]<0.05)
      ele_c=12000.0;
}
else
ele_c=0.001;
return ele_c;
}
DEFINE_ON_DEMAND(store_gradient)
{
  Domain *domain;
  cell_t c;
  Thread *t;
real ele;
ele=C_UDSI_DIFF(c,t,0);
  domain=Get_Domain(domain_ID);
  
  /* Fill the UDM with magnitude of gradient. */
  thread_loop_c (t,domain)
    {
       begin_c_loop (c,t)
         {
           C_UDMI(c,t,0) =-ele*C_UDSI_G(c,t,0)[1];
          C_UDMI(c,t,1) =-ele*C_UDSI_G(c,t,0)[0];
         }
       end_c_loop (c,t)
    }
}
请哪位大侠帮帮忙！谢谢！