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huanghuang36

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[ÇóÖú] UDF ¸ÄΪ²¢ÐмÆËã

ÎÒµÄUDF ÔÚµ¥»úÏÂÄÜÕý³£Ê¹Ó㬵«ÊDz¢Ðв»ÊÇÐèÒª¸ÄÒ»ÏÂÓï¾äÂ±¾ÈËÓÞ¶Û£¬ÕÕ׎̸̳ÄÁ˸ĵ«ÊÇÒ»Ö±²»¶Ô£¬Ï£Íû¸ßÈËÄܰïæָµãһϣ¬²»Ê¤¸Ð¼¤°¡
ÈçÏÂÊÇÎÒµÄUDF£ºÖ÷ҪʹÓõľÍÊÇCG_MOTION


#include
#include "udf.h"
#include "math.h"
real r_movefluid;
DEFINE_CG_MOTION(moveface, dt, cg_vel, cg_omega, time, dtime)
{
        Thread *t;
    face_t f;
        real x0,y0,r;
    real v0;
        real v;
    real omega=M_PI;
        real theta=omega*time;
    real x[ND_ND];
        t = DT_THREAD(dt);
    begin_f_loop(f,t)
        {
                F_CENTROID(x,f,t);
                x0=x[0];
                y0=x[1];
                r=sqrt(pow(x0,2)+pow(y0,2));
        }
    end_f_loop(f,t)
        v0=omega*r;
        r_movefluid=r;
   if (time>=0 && time<=M_PI/(180*omega))
           v=0;
   else if (time<=8*M_PI/(180*omega))
           v=12.96*(theta-(M_PI/180))*omega/(7*pow(M_PI,2));
   else if (time<=10*M_PI/(180*omega))
           v=0.072*omega/M_PI;
   else if (time<=29*M_PI/(180*omega))
           v=(0.072*omega/M_PI)-12.96*(theta-M_PI/18)*omega/(19*M_PI*M_PI);
   else if (time<=31*M_PI/(180*omega))
           v=0;

        cg_vel[0]=v*cos(theta)-v0*sin(theta);
        cg_vel[1]=v*sin(theta)+v0*cos(theta);
        cg_vel[2]=0;
        cg_omega[0]=0;
        cg_omega[1]=0;
        cg_omega[2]=omega;
}
DEFINE_CG_MOTION(rotate, dt, cg_vel, cg_omega, time, dtime)
{
        real omega=M_PI;
        cg_omega[2]=omega;
}
DEFINE_CG_MOTION(movefluid, dt, cg_vel, cg_omega, time, dtime)
{
    real v0;
        real v;
    real omega=M_PI;
        real theta=omega*time;
        v0=omega*r_movefluid;
   if (time>=0 && time<=M_PI/(180*omega))
           v=0;
   else if (time<=8*M_PI/(180*omega))
           v=12.96*(theta-(M_PI/180))*omega/(7*pow(M_PI,2));
   else if (time<=10*M_PI/(180*omega))
           v=0.072*omega/M_PI;
   else if (time<=29*M_PI/(180*omega))
           v=(0.072*omega/M_PI)-12.96*(theta-M_PI/18)*omega/(19*M_PI*M_PI);
   else if (time<=31*M_PI/(180*omega))
           v=0;

        cg_vel[0]=v*cos(theta)-v0*sin(theta);
        cg_vel[1]=v*sin(theta)+v0*cos(theta);
        cg_vel[2]=0;
        cg_omega[0]=0;
        cg_omega[1]=0;
        cg_omega[2]=omega;
}

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