text: I'm not so familiar with that but I guess the best way is to use Matlab/Simulink.\nit's very hard to simulate fluid flow with elbows, Pumps, Valves, etc.. all together with signals from RTUs, LDS, etc..\nGood Luck. I LOVE what you are doing\nby the way I know somebody who has included Navier-Stokes in a function somehow in Matlab if you want I can help you\ntake my e-mail:\ndeltamc2<at>hotttmail_com