Hi All,

i'm running some fluid sim tests in Houdini 9.5.209. The setup if fairly simple.
Basically, I have a slowly deforming object (a sequence of .bgeo files) in a fluid container. The collision of the object against the fluid is causing the fluid to move. The fluid it self has no forces and it doesn't affect the object. The Fluid Object and Fluid Sover have default values.

I am quite happy with the look, however the problem I'm having is that when I run a high res simulation (100 voxels or more) I always endup with the same error. I have attached an image which should illustrate what happens. It doesn't seem to be a random error, it alwyas happens at the same frame (for a given set of parameters). I have tried to increase the substeps but no luck.

Anyone has seen this problem before?

many thanks!

I have absolutley no idea to your problem. However your scene is huge in size. Houdini's units are in meters, so your animal looks to be about 50 meters or more.
Resizing to a more realistic size might help, as fluids works in DOPS, and all dynamics need real world scale or strange things can happen.

thanks for your answer…but it doesn't seem to make any difference…