请教高手个用fluent求解时出现的问题

baoshijie

#include "udf.h"

#define CON    8.411e6

DEFINE_SOURCE(cell_x_source, cell, thread, dS, eqn)
{
  real source;


      /* source term */
      source = -CON*C_U(cell,thread);

      /* derivative of source term w.r.t. x-velocity. */
      dS[eqn] = -CON;

  return source;
}
DEFINE_SOURCE(cell_y_source, cell, thread, dS, eqn)
{
  real source;


      /* source term */
      source = -CON*C_V(cell,thread);

      /* derivative of source term w.r.t. x-velocity. */
      dS[eqn] = -CON;

  return source;
}
DEFINE_SOURCE(cell_z_source, cell, thread, dS, eqn)
{
  real source;


      /* source term */
      source = -CON*C_W(cell,thread);

      /* derivative of source term w.r.t. x-velocity. */
      dS[eqn] = -CON;

  return source;
}
DEFINE_SOURCE(cell_mass_source, cell, thread, dS, i)
{
  real source;


      /* source term */
source=-20*C_YI(cell,thread,i)/(1+C_YI(cell,thread,i));

      /* derivative of source term w.r.t. x-velocity. */
dS=-20/((1+C_YI(cell,thread,i))*(1+C_YI(cell,thread,i)));

  return source;
}
初始化时出现以下语句：
  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.
请教是哪一块可能出现了问题，万分感谢！！！