Implementation of wall model to LES

saeedi · August 24, 2012, 09:21

Hi everyone,

I had a conceptual question on how to implement wall model to LES code.
I need to add wall model (wall stress model not RANS) to my LES code.

My conceptual question is: We know a Wall model calculates shear stress. How? (possibly explicitly from eddy viscosity from LES or etc.?)

Then we need to use that as B.C. to LES? How?

Thank you in advance for your useful comments.

FMDenaro · August 24, 2012, 11:17

Quote:

Originally Posted by saeedi

Hi everyone,

I had a conceptual question on how to implement wall model to LES code.
I need to add wall model (wall stress model not RANS) to my LES code.

My conceptual question is: We know a Wall model calculates shear stress. How? (possibly explicitly from eddy viscosity from LES or etc.?)

Then we need to use that as B.C. to LES? How?

Thank you in advance for your useful comments.

Hi, have you already seen the book of Sagaut?

saeedi · August 24, 2012, 12:25

No, I have not.

I am just about to start studying wall modelling and then I should embed the model to my code.

Do you mean LES for incomp. flows of Sagaut?

FMDenaro · August 24, 2012, 14:51

Quote:

Originally Posted by saeedi

No, I have not.

I am just about to start studying wall modelling and then I should embed the model to my code.

Do you mean LES for incomp. flows of Sagaut?

yes, it is

August 24, 2012, 09:21	Implementation of wall model to LES	#1
saeedi Member Mike Join Date: Apr 2011 Location: Canada Posts: 83 Rep Power: 15	Hi everyone, I had a conceptual question on how to implement wall model to LES code. I need to add wall model (wall stress model not RANS) to my LES code. My conceptual question is: We know a Wall model calculates shear stress. How? (possibly explicitly from eddy viscosity from LES or etc.?) Then we need to use that as B.C. to LES? How? Thank you in advance for your useful comments.

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August 24, 2012, 12:25		#3
saeedi Member Mike Join Date: Apr 2011 Location: Canada Posts: 83 Rep Power: 15	No, I have not. I am just about to start studying wall modelling and then I should embed the model to my code. Do you mean LES for incomp. flows of Sagaut?