Ansys Learning Forum Forums Discuss Simulation Fluids Only inlet velocity and pressure are known (venturi dregde) Reply To: Only inlet velocity and pressure are known (venturi dregde)

Rob
Forum Moderator

In reality the pump will spin/compress to push water through at a speed and with a certain pressure. If the losses in the pipework are low, the pump may deliver more flow, or the same flow for a lower speed/power draw. 

In Fluent we tell the system we want some flow rate. The solver will then deliver that, and alters the inlet pressure until the desired flow is acheived. We can then look at the pump curve(s) to see what will deliver that pressure and flow, and if there are options which does it for a lower power draw.Â