2 ms·
Are there compressible liquids? I'm seeing the whole thing bounce like the layers are compressing.
by BugsJustFindMe 2y ago
Are there compressible liquids? I'm seeing the whole thing bounce like the layers are compressing.
- pornel 2y agoThis is a common and difficult problem when simulating fluids using particles. It's possible to simulate using a grid instead, and that computes pressure very precisely, but it has a downside of adding inaccurate viscosity. And there are tricks that combine both approaches to balance out the errors.
- kotsoft 2y agoYeah agree. The objective was more to make a physics toy that would run on single core on a phone than something for actual scientific or industrial use. I could add additional iterations or do pressure projection but then there would be complaints about it being slow & choppy. There are also some large density ratios between the materials which further increased the difficulty, and would also increase the number of pressure projection iterations on a grid. I tried to simulate buoyancy without cheating (e.g. giving different materials different acceleration to gravity)