[hobing]

Hello I am using the Fluent V19 to analysis the propeller.

The propeller is analyzed in unsteady, and at each time step, a udf is created and used to obtain the coordinates of the various faces of the propeller surface, normal vector (x,y,z), force (x,y,z), static pressure, and area there is.

But there are some problems. Does anyone know how to achieve the above using udf? can someone help me?

..\..\src\udf.c(9): error C2040: 'x': 'real'
..\..\src\udf.c(22): error C2065: 'THREAD_WALL':
..\..\src\udf.c(27): error C2065: 'farea':
..\..\src\udf.c(27): error C2109:
..\..\src\udf.c(28): error C2223: '->storage' 
..\..\src\udf.c(32): warning C4477: 'fprintf' :

Below is my udf code.
domain = Get_Domain(3); where 3 is the boundary condition ID of the propeller.

#include "udf.h"

DEFINE_EXECUTE_AT_END(store_wall_info)
{
    Domain *domain;
    Thread *t;
    face_t f;
    real x[ND_ND];
    real x, y, z, area, pressure;
    real nx, ny, nz, fx, fy, fz;
    FILE *file;
    int time_step;

    time_step = N_TIME;

    file = fopen("wall_info.txt", "a");

    domain = Get_Domain(3);

    thread_loop_c(t, domain)
    {
        if (THREAD_TYPE(t) == THREAD_WALL)
        {
            begin_f_loop(f, t)
            {
                F_CENTROID(x, f, t);
                F_AREA(farea, f, t);
                F_P(pressure, f, t);
                F_NORMAL(nx, ny, nz, f, t);


                fprintf(file, "%e, %e, %e, %e, %e, %e, %e, %e, %e\n", x, y, z, area, pressure, nx, ny, nz, fx, fy, fz);
            }
            end_f_loop(f, t)
        }
    }

    fclose(file);
}