I have Ubuntu 20.04 with a Radeon 5450 GPU. I get the configuration window and then the screen with the menus (Bouyancy, Vorticity, etc) but nothing happening. I tried a few settings.
The simulation is written to run on the GPU. The Radeon 5450 came out in 2010, it might be that it is just to old to run the shader/simulation code :( I'm sorry.