modify k-e turbulence model

happy · May 29, 2012, 04:43

Hi all,,
I model the buoyant jet in still atmosphere and at the same time I would like to use K-e model. Therough the reading of some textbook about the using k-e for modeling vertical buoyant jet in stagnent atmosphare, it should be modified the k-e, where its calculations of disspresion is less than kinetic production. so
does any one apply any modefication for k-e to model buoyant jet before to help me?
any input can help.
Best regards

ghorrocks · May 29, 2012, 07:41

CFX has some turbulence models which include modifications for buoyancy. Have a look in the documentation for them.

happy · May 29, 2012, 22:31

Quote:

Originally Posted by ghorrocks

CFX has some turbulence models which include modifications for buoyancy. Have a look in the documentation for them.

Yes, there is PNG K-E; however, it was not good enough to predict the flow feild of buoyant jet.
Thanks in advance for helpful input

ghorrocks · May 30, 2012, 01:13

No, I am talkign about the SST model. It has specific buoyancy corrections available as options.

May 29, 2012, 04:43	modify k-e turbulence model	#1
happy Senior Member Safia Join Date: Oct 2010 Location: Australia Posts: 161 Rep Power: 16	Hi all,, I model the buoyant jet in still atmosphere and at the same time I would like to use K-e model. Therough the reading of some textbook about the using k-e for modeling vertical buoyant jet in stagnent atmosphare, it should be modified the k-e, where its calculations of disspresion is less than kinetic production. so does any one apply any modefication for k-e to model buoyant jet before to help me? any input can help. Best regards

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May 29, 2012, 07:41		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,917 Rep Power: 145	CFX has some turbulence models which include modifications for buoyancy. Have a look in the documentation for them.

May 30, 2012, 01:13		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,917 Rep Power: 145	No, I am talkign about the SST model. It has specific buoyancy corrections available as options.