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weipei0529木蟲 (正式寫手)
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[求助]
UDF功能給定振動(dòng)桿和振動(dòng)盤的周期性振動(dòng)的位移和速度表達(dá)式
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用UDF功能給定振動(dòng)桿和振動(dòng)盤的周期性振動(dòng)的位移和速度表達(dá)式,擾動(dòng)頻率為2500Hz,擾動(dòng)振幅為2e-7um,在0.08s時(shí)開始施加擾動(dòng),使用動(dòng)網(wǎng)格的源程序如下: #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; } 但是提示19行,c: line 19: structure reference not implemented 求大神指導(dǎo)啊 |
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