A question about density in WCSPH about splishsplash HOT 6 CLOSED

from splishsplash.

Hi,

Thanks for your answer.

There is another question. After running the DFSPH method, the fluid will explode when running WCSPH method. However, if we run WCSPH first and then DFSPH, the problem will not occur. Is there a bug?

from splishsplash.

Probably the parameters are different for DFSPH and WCSPH. Can you check that WCSPH runs in both cases with the same time step size, CFL setting and stiffness parameter.

from splishsplash.

Probably the parameters are different for DFSPH and WCSPH. Can you check that WCSPH runs in both cases with the same time step size, CFL setting and stiffness parameter.

Thanks for your answer. It is caused by the time step size. Maybe you can reset the time step size afer changing the cfl method or simulation method.

from splishsplash.

In PCISPH simulation, fluid energy is abnormal.

I mentioned this to you in past discussions, and you thought it might be a matter of time step size.

But there may be other reasons. Firstly, when the time step size is fixed at 0.001, PCISPH still can not run properly. Second, in your old version of the code, there is no this problem, even when I set the time step size to 0.003.

from splishsplash.

Hope that this issue is fixed now.

from splishsplash.