Fluid simulation only renders surface leaving cavities against domain The simulation runs fine, but only seems to add the mesh to the surface layer of the fluid. Any space between the surface and the domain that should be filled is left as a void. I tried changing the concavity numbers in the mesh settings, but that didn't do anything.
When I see other fluid simulation tutorials, there is no gap between the fluid and sides.
How do I fill the whole space with mesh that should be filled with the fluid?
After giving this a bounty because I had the same problem, I found the solution. When you simulate the fluid, the default settings only simulate the surface layer of the liquid. This is called a narrow band, which reduces memory and computational power needed. For some reason, the fluid mesher only meshes the narrow band.
Scroll to the Liquid settings, and set narrow band to 0 to disable it.