components add-in for changing the pressure without affect flow rate and match up the standard graph

Huarui Qiu

Hello all,

I am doing a 4th year final project and faced a problem on what we should add to change the parameter. We have a pressure relief valve here to simulate our loop flush. And we want to match up the flow rate and pressure data for the loop flush to the data sheet graph, which is the graph with pink. Is there any way to not change the flow rate and lower the pressure in the model to match up the data sheet graph? Or any other components we can add in to match up the graph? Pictures and model are all posted here.

Model with charge pump.scm

RoKet

Hi Huarui Qiu,

The PRV component has a fixed characteristic for flow vs. pressure drop. It's a simple linear curve, you have no chance to change it.

For a free definition of flow characteristic you can use the ResistorTableQp that uses a look-up table:

My definition of the curve is not the best, you will be more precise ;-).

pressure vs flow 2022.3.scm

pressure vs flow.scm