[sphoenix09]

I am newbie to multi phase analysis and simulating a sloshing problem with sinusoidal motion of rectangular and cylindrical tank.

Force = 0.01*sin(7*time)

I used the following udf to compute. Is this correct udf for such problem? or Should I use DEFINE_CG_MOTION or DEFINE_ZONE_MOTION? Which macro suits?



#include "udf.h" #define omega 7 #define a 0.01 DEFINE_SOURCE(xmom_source, c, t, dS, eqn) { real source; real time=RP_Get_Real("flow-time"); if(time < 10) { source = - omega * omega * a * sin(omega * time) * C_R(c,t); dS[eqn] = - omega * tan(omega * time) * C_R(c,t); } else source = dS[eqn] = 0.0; return source; }
here source term is acceleration. I'm not sure about this.

Any help would be appreciated.

Thank you.