CFD Online Discussion Forums

CFD Online Discussion Forums (
-   CFX (
-   -   Gerotor Simulation (

saravana May 11, 2010 08:31

Gerotor Simulation
Hai buddies, I need to simulate Gerotor pump using ANSYS CFX.
As we need to understand the transient behaviour with a compressible fluid, we have ruled out using immersed bodies technique.
Do anybody have any ideas or previous experience regarding this, please share.

Thanks in advance.

stumpy May 11, 2010 09:39

It's very difficult to do this in CFX if immersed solid cannot be used. Frankly I'd recommend you look elsewhere.

TRoeber May 11, 2010 11:36

Gerotor simulation
We have used the Pumplinx program from Simerics for modeling a gerotor with compressible flow.

ghorrocks May 11, 2010 18:21

I agree with stumpy, if it cannot be done with immersed bodies I would go to a different CFD code.

Why do you say immersed bodies will not work in this application?

saravana May 12, 2010 05:54

Gerotor Simulation
Hai friends, thanks for ur response.

I had a discussion with ANSYS people in Germany, during last CADFEM users meeting regarding usage of immersed solid body technique for Gertor simulation.
And the reply from them is that this technique is not very accurate and not suitable for compressible flow and transient conditions.
But we are interested in understanding its transient behaviour.

It may be a bit easy to do this with Fluent using Dynamic meshing option.

But as I was advised that with some programming we can do this in CFX itself.

garvind2k August 23, 2013 03:02

Hi Sarvanan

you can simulate the GE rotor with PumpLinx in few hours and analyse the transient behaviour of your pump.
PumpLinx has a comprehensive cavitation model and the ability to include realistic details such as tip gaps, clearances, etc..

Please go thru the following links:

I am based in Bangalore and official distributor of PumpLinx software in India.

for any further clarification feel free to write me.


All times are GMT -4. The time now is 00:39.