can set 2flow type(larminar&turbulence) in 1model

January 15, 2008, 02:52

my model is flow meter but velocity is very low. I know flow before passed blade is larminar and flow passed blade is turbulence. How to set property of flow. I tryed to run with turbulence but large error. Thanks

January 15, 2008, 18:25

you should do this using the transition model in STAR-CCM+. STAR-CCM+ can also do MRF and sliding mesh.

January 15, 2008, 23:31

Thank you, but I can done sliding mesh. I would like to know Star CD can set 1 Mat. and 2 flow types in 1 analysis.Ex: flow in long pipe, velocity is very low (assum larminar) pass object(can make turbulence). Can I set some cell solved with larminar flow and another with turbulence flow? Thanks

January 16, 2008, 07:31

I think what he is trying to get at is that STAR-CCM+ would be a better option for you analysis, instead of STAR-CD.

January 16, 2008, 22:08

Thanks Jim. Star CD v3.26 can't set analysis some cell be larminar and another be turbulance, is it?

January 17, 2008, 03:30

It is possible using the subroutines. Just ask the support or search the web or try yourself. It was somewhere described how to do it. Maybe on www.adapco-online.com

January 15, 2008, 02:52	can set 2flow type(larminar&turbulence) in 1model	#1
tipakorn Guest Posts: n/a	my model is flow meter but velocity is very low. I know flow before passed blade is larminar and flow passed blade is turbulence. How to set property of flow. I tryed to run with turbulence but large error. Thanks

January 15, 2008, 18:25	Re: can set 2flow type(larminar&turbulence) in 1mo	#2
better option Guest Posts: n/a	you should do this using the transition model in STAR-CCM+. STAR-CCM+ can also do MRF and sliding mesh.

January 15, 2008, 23:31	Re: can set 2flow type(larminar&turbulence) in 1mo	#3
tipakorn Guest Posts: n/a	Thank you, but I can done sliding mesh. I would like to know Star CD can set 1 Mat. and 2 flow types in 1 analysis.Ex: flow in long pipe, velocity is very low (assum larminar) pass object(can make turbulence). Can I set some cell solved with larminar flow and another with turbulence flow? Thanks

January 16, 2008, 07:31	Re: can set 2flow type(larminar&turbulence) in 1mo	#4
Jim Guest Posts: n/a	I think what he is trying to get at is that STAR-CCM+ would be a better option for you analysis, instead of STAR-CD.

January 16, 2008, 22:08	Re: can set 2flow type(larminar&turbulence) in 1mo	#5
tipakorn Guest Posts: n/a	Thanks Jim. Star CD v3.26 can't set analysis some cell be larminar and another be turbulance, is it?

January 17, 2008, 03:30	Re: can set 2flow type(larminar&turbulence) in 1mo	#6
Balduin Bankerotti Guest Posts: n/a	It is possible using the subroutines. Just ask the support or search the web or try yourself. It was somewhere described how to do it. Maybe on www.adapco-online.com

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