帮我解释一下udf

sunsky2006

#include "udf.h"nL';.$
#include "dynamesh_tools.h"CC
DEFINE_CG_MOTION(finpitching, dt, vel, omega, time, dtime)8
Thread *t;b>
face_t f;2\K:
float Vx;  //x-component of velocity//eFa
float Vy;//y-component of velocity//kxR.
float x[ND_ND];//value of center coordinates ///
float Fx,Fy;5
float r,v;fZ>$D5
float shi;//current time//o_$,
  /* reset velocities */[reXGk
  NV_S (vel, =, 0.0);Y5
  NV_S (omega, =, 0.0);q!
  nY6)\w
  if (!Data_Valid_P ())a
  return;xc[(e2
  @)%]
  jJ:
  begin_f_loop(f, t)\G2)
  {m9C5
          AHn$h
  F_CENTROID(x, f, t);//get the center of face//+L."fl
  Fx = x[0];EwndI';
  Fy = x[1];QMA
  r=sqrt(Fx*Fx+Fy*Fy);//radius//H
  }@*mO
  L
  end_f_loop(f,t)Ce
  omega[2]=6.28318531;//omega=2pi//9
  v=r*omega[2];//velocity//4
  shi=RP_Get_Real("flow-time"); // current time// XJ1,
  Vx=v*sin(omega[2]*shi);i,
  Vy=v*cos(omega[2]*shi);a
        euimu
  /* set x-component and y-component of velocity */O]_hy
  vel[0] = Vx;kAzF
  vel[1] = Vy;)Bp
  [(
Message ("time = %f,dtime = %f, Vx = %f,Vy = %f \n", time, dtime, Vx,Vy);~M/
  sr11
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}[br][br][以下内容由 sunsky2006 在 2007年10月18日 11:22am 时添加] [br]
刚学，程序是不是有问题谁帮忙改一下
谢谢

gallongallon

首先自己把后面的网页附带记号去掉，妨碍阅读

sunsky2006

#include "udf.h"
#include "dynamesh_tools.h"
DEFINE_CG_MOTION(finpitching, dt, vel, omega, time, dtime)
Thread *t;
face_t f;
float Vx;  //x-component of velocity//
float Vy;//y-component of velocity//.
float x[ND_ND];//value of center coordinates //
float Fx,Fy;
float r,v;
float shi;//current time//
  /* reset velocities */
  NV_S (vel, =, 0.0);
  NV_S (omega, =, 0.0);
  
  if (!Data_Valid_P ())
  return;

  begin_f_loop(f, t)
  
         
  F_CENTROID(x, f, t);//get the center of face//
  Fx = x[0];
  Fy = x[1];
  r=sqrt(Fx*Fx+Fy*Fy);//radius//

  end_f_loop(f,t)
  omega[2]=6.28318531;//omega=2pi//
  v=r*omega[2];//velocity//
  shi=RP_Get_Real("flow-time"); // current time//
  Vx=v*sin(omega[2]*shi);
  Vy=v*cos(omega[2]*shi);
      
  /* set x-component and y-component of velocity */O]_hy
  vel[0] = Vx;
  vel[1] = Vy;)
  [(
Message ("time = %f,dtime = %f, Vx = %f,Vy = %f \n", time, dtime, Vx,Vy);
  
}