That’s an interesting process, but I’m not really familiar with how it works. Also what part of it would you like to model or simulate. I would suggest that if you are new to simulations or the SimScale platform, then lets start by a simple flow analysis of water flow through the system.
Since, water is considered ‘Incompressible’ by pressure, you could start with a “Incompressible fluid flow” analysis. Then comes the question of what you mean by “…under pressure passing” . Is it a high pressure driven flow of water ?