Boundary Layer Transition

Tom A · January 18, 2012, 09:22

Is it true that Fluent cannot calculate boundary layer instability and transition? I have read this in a few places but a few of them mention CFX being able to handle turbulent boundary layers and that it may be implemented in Fluent eventually. I am not particularly interested in modelling the boundary layer properly but I would like to talk about this in a paper I am writing. Does anyone know more on this or know of any papers I can reference?

Tom

swiftaircraft · January 20, 2012, 16:21

Fluent can easily handle laminar / turbulent boundary layer transitions

Far · January 21, 2012, 02:12

Two models are availabe for laminar to turbulent transition : Walter's three equation model and menter's 4 eq SST transition model. First one is based on physical reasoning and second one is based on correlations, so in some situations physical reasoning may be wrong and in other situations correlations may not be valid.

January 18, 2012, 09:22	Boundary Layer Transition	#1
Tom A New Member Tom Join Date: Jan 2012 Posts: 11 Rep Power: 14	Is it true that Fluent cannot calculate boundary layer instability and transition? I have read this in a few places but a few of them mention CFX being able to handle turbulent boundary layers and that it may be implemented in Fluent eventually. I am not particularly interested in modelling the boundary layer properly but I would like to talk about this in a paper I am writing. Does anyone know more on this or know of any papers I can reference? Tom

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January 20, 2012, 16:21		#2
swiftaircraft Member David Stanbridge Join Date: Apr 2010 Location: Norwich, UK Posts: 59 Rep Power: 16	Fluent can easily handle laminar / turbulent boundary layer transitions

January 21, 2012, 02:12		#3
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	Two models are availabe for laminar to turbulent transition : Walter's three equation model and menter's 4 eq SST transition model. First one is based on physical reasoning and second one is based on correlations, so in some situations physical reasoning may be wrong and in other situations correlations may not be valid.