Hi people,

I have created a fluid sim using a fliptank and a suction force. In the fliptank_fluid > particlefluidsource > regions, I've turned on Flatten Geometry and added some Pad Bounds to give me a nice, flat edge… with the intention to add it to an ocean surface at some point.
Where the edge of the sim meets the Pad Bounds there is a small ‘dip’ in the surface and no matter what combination of Flatten Distance or any of the Filtering options will remove it. despite either side of the crease being completely flat (image attached).

Q.1 How can I get rid of it?
Q.2 If I remove the Pad Bounds will this dip not even show up, once added to the ocean surface?

Thanks.

edit: It would seem that reducing the Voxel Scale in the Surfacing tab has cleaned it up… if that's the correct way to go?

This is a combination of voxel resolution, flatten distance, and regional voxel scale. You need to find the right blend between them.