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weipei0529

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achilFes1990

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2Â¥2014-01-17 22:29:04
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weipei0529

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2Â¥: Originally posted by achilFes1990 at 2014-01-17 22:29:04
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#include "stdio.h"
#include "udf.h"
#define Ac 2.e-7
#define m 0.5
#define fc 2500.
#define fm 833.
#fefine t0 0.08
DEFINE_CG_MOTION(droplet,dt,cg_vel,cg_omega,time,dtime)
{
Thread *t;
face_t f;
real velo,loc;
/*reset velocities*/
NV_S(cg_vel,=,0.0);
NV_S(cg_omega,=,0.0);
if(!Data_Valid_P())
return;
/*get the thread Pointer for which this motion is defined*/
t = DT_THREAD(dt);
/*compute velocity and location of vibration*/
velo=Ac*2*M_PI*(m*fm*sin(2*M_PI*fc*(time-t0))*cos(2*M_PI*fm*(time-t0))+m*fc*cos(2*M_PI*fc*(time-t0))*sin(2*M_PI*fm*(time-t0))+fc*cos(2*M_PI*fc*(time-t0)));
loc=Ac*(1+m*sin(2*M_PI*fm*(time-t0)))*sin(2*M_PI*fc*(time-t0));
Message("\nUDF droplet:time=%f,x_vel=%10.8f,loc(m)=%10.8f\n",time,velo,loc);
/*set y_component of velocity*/
cg_vel[0]=velo;
}
3Â¥2014-01-18 15:18:29
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