Every surface and polygon object can be equipped with a "RFVolume" world space to modifier to refine the collision geometry and control how the particle "see" the object
PENDING
Geometry Detail
Here you find five levels of quality. The higher the level, the longer the simulation will take, but the fluid-object collision will also be more accurate. Changing the level influences and updates the "Cell Size" value found in the "Volume" section. In most cases, the calculated value provides the best balance between simulation speed and accuracy. If you want to control "Cell Size" manually deactivate the associated "Auto Cell Size" checkbox.
...
By default, "Volume Mode" is determined automatically by analyzing the object's geometry, but this test is not always reliable. For manual control uncheck "Auto Volume Mode". If you can see leaking particles in conjunction with thin or single-walled objects please consider activating → "Continuous Collision Detection" in the "Collider" element.