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# include "udf.h"
# include "mem.h"
# include "dynamesh_tools.h"
# include "math.h"

DEFINE_CG_MOTION(ts,dt,vel,omega,time,dtime)
{

        FILE *fp = fopen("fluid_forces_and_moments.txt","a";

        Domain *d = Get_Domain(3);

        Thread *tf1 = Lookup_Thread(d, 3);

        Thread *t;
        cell_t c;
        face_t f;

        real CG[3];
        real FORCE[3];
        real MOMENT[3];

    real cx,cy;
    real wcx=0.0;
    real wcy=0.0;
    real va_liq=0.0;
    real z[ND_ND];

        if (!Data_Valid_P ())
   
       return;

        omega[0]=0.0;
        omega[1]=0.0;
       
        vel[0]=1*time;
        vel[1]=0.0;

thread_loop_c(t,d)  /*loops over all cell threads in domain*/
{
    begin_c_loop(c, t)     /*loops over cells in  a  cell  thread  */
  {     
      if(0<C_VOF(c,t)&&C_VOF(c,t)<=1.0)   
      {
        va_liq = va_liq + C_VOLUME(c,t);   
        C_CENTROID(z,c,t);   
        wcx = wcx + z[0]*C_VOLUME(c,t);
        wcy = wcy + z[1]*C_VOLUME(c,t);     
      }   
    }
    end_c_loop(c, t)
  }
    cx=wcx/va_liq;
    cy=wcy/va_liq;

        CG[0]=cx;
        CG[1]=cy;

   Compute_Force_And_Moment(d, tf1, CG, FORCE, MOMENT,FALSE);

fprintf(fp,"%g,%g,%g,%g,%g\n",time,FORCE[0],FORCE[1],MOMENT[2],CG[0]);

fclose(fp);

  }

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hellowqy

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ÒýÓûØÌû:
2Â¥: Originally posted by ³¯¸èÒ¹ÏÒ at 2015-11-12 12:28:51
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