OpenFOAM wall function treatment

kimotbwb · March 4, 2013, 10:20

Hello there,

i have a question regarding the wall function treatment for the kOmegaSST model in OpenFOAM 2.1.x.

I am using the nutUSpaldingWallFunction and i would like to know, if it's comparable to the automatic wall function treatment in CFX. Does anybody knwo that? so does the nutUSpaldingWallFunction uses a blending between lowRe and highRe?
Is there another wall function available in OpenFOAM-2.1.x for the kOmegaSST turbulence model that is comparable to the automatic wall function treatment in CFX?

king regards!

kimotbwb · March 4, 2013, 10:24

Quote:

Originally Posted by kimotbwb

Hello there,

i have a question regarding the wall function treatment for the kOmegaSST model in OpenFOAM 2.1.x.

I am using the nutUSpaldingWallFunction and i would like to know, if it's comparable to the automatic wall function treatment in CFX. Does anybody knwo that? so does the nutUSpaldingWallFunction uses a blending between lowRe and highRe?
Is there another wall function available in OpenFOAM-2.1.x for the kOmegaSST turbulence model that is comparable to the automatic wall function treatment in CFX?

king regards!

i forgot to mention:
i am interested only in wall function treatment for incompressible RANS applications

timo_IHS · March 5, 2013, 13:10

Yes it is a "automatic" wall function, but not comparable to that of CFX.

kimotbwb · March 5, 2013, 16:04

thanks for replying! so it uses some kind of automatic blending to accomplish to the low- and highRe formulation of the SST-model ?
i didn't really expect that it is comparable to that one used in CFX

do have any references of validation test cases for OpenFOAM that uses the Spalding wf formulation in combination with kOmegaSST ?
would be nice!
or maybe experiences using SST with Spalding?

March 4, 2013, 10:20	OpenFOAM wall function treatment	#1
kimotbwb New Member Join Date: Jun 2012 Posts: 12 Rep Power: 2	Hello there, i have a question regarding the wall function treatment for the kOmegaSST model in OpenFOAM 2.1.x. I am using the nutUSpaldingWallFunction and i would like to know, if it's comparable to the automatic wall function treatment in CFX. Does anybody knwo that? so does the nutUSpaldingWallFunction uses a blending between lowRe and highRe? Is there another wall function available in OpenFOAM-2.1.x for the kOmegaSST turbulence model that is comparable to the automatic wall function treatment in CFX? king regards!

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March 5, 2013, 13:10		#3
timo_IHS Member Timo K. Join Date: Feb 2010 Location: University of Stuttgart Posts: 48 Rep Power: 5	Yes it is a "automatic" wall function, but not comparable to that of CFX.

March 5, 2013, 16:04		#4
kimotbwb New Member Join Date: Jun 2012 Posts: 12 Rep Power: 2	thanks for replying! so it uses some kind of automatic blending to accomplish to the low- and highRe formulation of the SST-model ? i didn't really expect that it is comparable to that one used in CFX do have any references of validation test cases for OpenFOAM that uses the Spalding wf formulation in combination with kOmegaSST ? would be nice! or maybe experiences using SST with Spalding?