Enhanced Wall Function - Help Needed

amitjoshi · March 4, 2019, 02:58

Hello,
Can anyone tell me the way to implement the enhanced wall function used by Fluent. I know that they use the approach of White and Cristoph, but I am confused as how do I apply this in Solver.

I am stuck with the implementation of alpha (pressure gradient term) in it.

sbaffini · March 4, 2019, 07:07

Not sure about what puzzles you in that, but this is a possible implementation of pressure gradient effects:

https://core.ac.uk/download/pdf/81606758.pdf

Yet, I have to say, I really dislike implementations that nondimensionalaize the pressure gradient with viscous scales, even if they use u* instead of u+.

March 4, 2019, 02:58	Enhanced Wall Function - Help Needed	#1
amitjoshi New Member Amit Joshi Join Date: Aug 2018 Posts: 6 Rep Power: 8	Hello, Can anyone tell me the way to implement the enhanced wall function used by Fluent. I know that they use the approach of White and Cristoph, but I am confused as how do I apply this in Solver. I am stuck with the implementation of alpha (pressure gradient term) in it.

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March 4, 2019, 07:07		#2
sbaffini Senior Member Paolo Lampitella Join Date: Mar 2009 Location: Italy Posts: 2,195 Blog Entries: 29 Rep Power: 39	Not sure about what puzzles you in that, but this is a possible implementation of pressure gradient effects: https://core.ac.uk/download/pdf/81606758.pdf Yet, I have to say, I really dislike implementations that nondimensionalaize the pressure gradient with viscous scales, even if they use u* instead of u+.