How do I set the viscosity in Phuns fluids?
You can set it using the console prompt, but be aware that setting it to a very large value (something like syrup) can cause instability and setting it to a very small value can also cause instabilities. The reason is that Phun fluids use a viscosity model, where viscous damping is modeled using an explicit force. If this force becomes too big to be resolved by the timestep, the system can gain energy and blow up. However, stay tuned for improvements!
