Mindnumb
Mechanical
- Dec 13, 2002
- 110
I am currently doing a project where I have used the internal fan function to simulate the effect of a certain pump in a system. In have set up a custom fan to follow the pump caracteristics
The problem is that the flow wont stabilize properly in some cases. anyone having a tip on what to do to get it stable?
the strange thing is that its ok for some cases, but when I make some changes to the model ( blocking off some parallel running lines) to calculate the worst case scenario, it runs forever, and the results are no good.
For instance: the pump curve has a max differential pressure of 9 bar, but the pressure differential over some parts of the line varies between -3 bar and + 20bar..
The problem is that the flow wont stabilize properly in some cases. anyone having a tip on what to do to get it stable?
the strange thing is that its ok for some cases, but when I make some changes to the model ( blocking off some parallel running lines) to calculate the worst case scenario, it runs forever, and the results are no good.
For instance: the pump curve has a max differential pressure of 9 bar, but the pressure differential over some parts of the line varies between -3 bar and + 20bar..