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Vacuum Pumps

 
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wljohnson



Joined: 17 Sep 2009
Posts: 1
Location: Kennedy Space Center
PostPosted: Thu Sep 17, 2009 9:12 am    Post subject: Vacuum Pumps Reply with quote
Has anyone ever tried to model a vacuum pump in TD? I've tried all the different pumps and compressor. I got a s-tube to a low pressure to sorta work, but not sure if that would be the proper way to model it. I have a pump curve for the pump I would like to model, but not sure about the way to go about it.
-Wes
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davemohr



Joined: 09 Nov 2005
Posts: 1
Location: Mims, Florida
PostPosted: Mon Sep 28, 2009 1:27 pm    Post subject: Reply with quote
Hi Wes;

All of the roughing pumps I have ever worked with are best modeled as a COMPPD (positive displacement compressor) with 2 opposed check valves.

The diffusion pumps can get pretty fancy, and I don't know how they work, so I can't offer any advice there.

Dave Mohr
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D&E Propulsion & Power Systems
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