I have a fluid sim under Blender 2.80 which requires liquid to flow into a main structure and fill side channels off (imagine underground passages flooding or a storm drain backing up).
Past a certain relative width, I cannot get the 'liquid' to flow into these smaller side areas, even with a lowered viscosity; all the fluid does is gain height, as the level behind rises, and inch forward rather than flow in. The relative width of the side channels seem to be important as I've sized a test area to 5m x 5m, then magnified it to 50m x 50m and still have the same difficulty (Transforms applied, afterwards).
Having been through boundary type settings, viscosity settings, domain height (less volume is not necessarily better) and one or two other options (3am never is a good time to still be working, let alone remembering) can anybody suggest other parameters which will allow the simulation to unfold as hoped? A much higher resolution? Boundary subdivisions? Animal sacrifice?
I've reproduced the effect in the attached test file.