Using 'Compute_Force_And_Moment' funtion
 

hi,

I am using Compute_Force_And_Moment function to access lift and drag acting on cylinder whose boundary id is 17. my udf is as follows:

#include "udf.h"

DEFINE_PROFILE(update_velocity,t_inlet,i)
{
/* get moment or force */
Domain *d = Get_Domain(1); /* for single phase flow*/
face_t f;
Thread *t_object = Lookup_Thread(d,17); /* you get Boundary_ID from the boundary condition panel in Fluent*/
real force[3], moment[3], cg[ND_ND]; /*initialise*/
real force_y,v_new;
Compute_Force_And_Moment (d,t_object,cg,force,moment,TRUE)

v_new = 0.0*force[0]; // at this line parse error is coming!!

/* update inlet velocity */

begin_f_loop(f,t_inlet) /* loop over all faces at velocity inelt */
{
F_PROFILE(f,t_inlet,i) = v_new;
}
end_f_loop(f,t_inlet)

}

it shows parse error at line 13 (red color line). p
please help me :(

You have asked the same question twice. I already replied at your first question.