[Andy Chen]

Dear exprts:

I try many times to add particle(marker particle) in the fluid. When I use specific pressure boundary condition to set fluid height, then I can success to add particle in the fluid. But I use volume fluid rate or specific velocity boundary condition, then I can't see any particle in the fluid. Why?

P.S I use add block and give number in x- y- z- direction.

Thanks your help! Please help me..........

[MuxaB]

Originally Posted by Andy Chen

Dear exprts:

I try many times to add particle(marker particle) in the fluid. When I use specific pressure boundary condition to set fluid height, then I can success to add particle in the fluid. But I use volume fluid rate or specific velocity boundary condition, then I can't see any particle in the fluid. Why?

P.S I use add block and give number in x- y- z- direction.

Thanks your help! Please help me..........

Are the particles not there at all, even at t=0? Do you have fluid initially in the domain? Marker particles can only exists inside fluid, if there is no fluid, the particles will not be initialized.

[Andy Chen]

Originally Posted by MuxaB

Are the particles not there at all, even at t=0? Do you have fluid initially in the domain? Marker particles can only exists inside fluid, if there is no fluid, the particles will not be initialized.

I don't set initial condition. So, you mean that I have to set initial condition. Then, marker particles will exist in the fluid when I use volume fluid rate boundary condition.

Thanks your reply, MuxaB