Learning Forum

[warhammer975]

I tried to write a function to determine the wall cells of the inner cylinder (id=5) for pumping air into them, but so far Fluent refuses to understand this mass flow...

#include "udf.h"

 

 

DEFINE_EXECUTE_AT_END(find_first_near_wall_cells)

{

    Domain *domain;

    Thread *wall_thread;

    face_t f;

    cell_t c;

    Thread *adjacent_thread;

    real cell_dist;

 

    domain = Get_Domain(1);

    

 

    wall_thread = Lookup_Thread(domain, 5); 

 

 

    begin_f_loop(f, wall_thread)

    {

       

        c = F_C0(f, wall_thread);

 

       

        adjacent_thread = THREAD_T0(wall_thread);

        cell_dist = C_WALL_DIST(c, adjacent_thread);

 

 

        if (cell_dist < 0.001)

        {

            Message("Found adjacent cell to wall at face: %d\n", c);

        }

    }

    end_f_loop(f, wall_thread)

}

 

DEFINE_ADJUST(adjust_mass_source, domain)

{

    Thread *t;

    cell_t c;

    real mass_flow = 2;  

    real cell_dist;

 

 

    thread_loop_c(t, domain)

    {

        begin_c_loop(c, t)

        {

 

            cell_dist = C_WALL_DIST(c, t);

 

 

            if (cell_dist < 0.001)  

            {

 

                C_UDMI(c, t, 0) = mass_flow;  

            }

        }

        end_c_loop(c, t)

    }

}