How to work with constant pressure?

February 24, 2009, 13:58

Hello,

I'm working with star ccm and star cat5 and I have built a part in Catia. To work with a constant mass flow or speed is no problem but I would like to work with a constant pressure like on a flow bench.

Regards, Martin

February 25, 2009, 08:16

Hello,

I have tried a little bit with the stagnation boundary. When I make it on inlet AND outlet it seems to be that what I want to do. Inlet 1.1bar, outlet 1.0bar and the flow goes.

Seems to be too easy or works it correct?

Regards, Martin

February 25, 2009, 13:23

I have tested it. On a normal T-elbow it works but on a more complex body I get rubbish. Mass flow 230kg/s but 180-220 kg/HOUR seems more realistic. Has somebody a hint for me? Manual don't help..

February 24, 2009, 13:58	How to work with constant pressure?	#1
Martin Guest Posts: n/a	Hello, I'm working with star ccm and star cat5 and I have built a part in Catia. To work with a constant mass flow or speed is no problem but I would like to work with a constant pressure like on a flow bench. Regards, Martin

February 25, 2009, 08:16	Re: How to work with constant pressure?	#2
Martin Guest Posts: n/a	Hello, I have tried a little bit with the stagnation boundary. When I make it on inlet AND outlet it seems to be that what I want to do. Inlet 1.1bar, outlet 1.0bar and the flow goes. Seems to be too easy or works it correct? Regards, Martin

February 25, 2009, 13:23	Re: How to work with constant pressure?	#3
Martin Guest Posts: n/a	I have tested it. On a normal T-elbow it works but on a more complex body I get rubbish. Mass flow 230kg/s but 180-220 kg/HOUR seems more realistic. Has somebody a hint for me? Manual don't help..

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