Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1060 3GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.86
Broken: version: 2.82 (sub 6), branch: master, commit date: 2020-01-27 18:52, hash: rB507a331f0182
Short description of error
The scale of Mantaflow liquid simulations is not consistent with the real world scale of other Blender systems, and there doesn't seem to be any way to change it.
Exact steps for others to reproduce the error
Attached file contains a liquid simulation with an inflow, and a rigid body cube for reference.
The liquid domain is 64m, and the "real world size" parameter is also set to 64m.
The rigid body cube and the liquid are both falling under scene gravity, and should hit the ground at the same time.
The rigid body cube takes nearly 3 seconds (frame 64) to hit the ground plane under scene gravity, the liquid takes less than half a second (frame 10).
Scale the domain object in the scene scene and re-bake, notice no change in simulation.
Change the Real World Size parameter and re-bake, notice no change in simulation.
The simulation is affected by changes in scene gravity, but the scale is not consistent.