Fluids

Fluids

UDF to calculate the radiation intensity on dpm particles

    • pavankonchada334
      Subscriber

      Hi Guyz,


                 I am trying to calculate the intensity of DO radiation on the dpm particles that are injected from inlet along the trajectories. For that reason I used below mentioned udf in which irradiation(W/m2) in before the timestep started and irradiation after the time step is completed is used with trapezoidal rule to integrate the intensity (j/m2)


      #include "udf.h"
      #include "dpm.h"

       DEFINE_INIT(rad_init,domain)
       {
       /* if memory for the particle variable titles has not been
       * allocated yet, do it now */
       if (NULLP(user_particle_vars)) Init_User_Particle_Vars();
       /* now set the name and label */
       strcpy(user_particle_vars[0].name,"rad_virus");
       strcpy(user_particle_vars[0].label,"Rad Virus");
       strcpy(user_particle_vars[1].name,"rad_virus-0");
       strcpy(user_particle_vars[1].label,"Rad Virus 0");
       }

       DEFINE_DPM_SCALAR_UPDATE(rad_virus,cell,thread,initialize,tp)
      {
        Injection *I;
        Particle *p;
        cell_t c;
        Thread *t;
       if (initialize)
       {
       TP_USER_REAL(tp,0) = 0.;
       TP_USER_REAL(tp,1) = c->DO_IRRAD;
       }

       else
       {
       /* use a trapezoidal rule to integrate the melting index */
       TP_USER_REAL(tp,0) += 0.001 * .5 * (TP_USER_REAL(tp,1) + c->DO_IRRAD);
       /* save current fluid viscosity for start of next step */
       TP_USER_REAL(tp,1) = c->DO_IRRAD;
       }
       }


      But it is throwing error C2223: left of '->DO_IRRAD' must point to struct/union


      Please Help

    • Rob
      Ansys Employee

      Where is DO_IRRAD defined?

    • pavankonchada334
      Subscriber

      I have seen in one blog. But please can you share me the macro how to get the irradiation in cell

    • Rob
      Ansys Employee

      It'll have been defined somewhere in the code.   Have a look in the UDF manual. 

    • pavankonchada334
      Subscriber

      I had gone through UDF manual but I am not able to find it.

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