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Numerical Implementation of LES Wall models

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Old   March 3, 2005, 22:47
Default Numerical Implementation of LES Wall models
  #1
dragon
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hi,all! I am new to LES programming,I hope that someone can help me the following questions.

1)Must all LES use wall models? why?

2)Is there any difference between the k-epsi wall functions and LES wall Models? What is it?

3)What is the most easy-to-implement and efficient wall models in LES? How is it numerically implemented? Since I lack the programming experience, the details of numerical implementation is very important for me.

Any comment or some reference is greatly appreciated, thanks

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Old   March 4, 2005, 10:03
Default Re: Numerical Implementation of LES Wall models
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andy
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1) No.

2) Yes. The part of the unsteady motion modelled by the two approaches is different.

3) Easiest to implement is placing the first grid point at y+ < 1. Most efficient depends on the dominant physics of what is being simulated.

Describing numerical implementations on a forum such as this is not practical. I would suggest looking at other peoples LES code, reading early LES papers from the 60s and 70s or reading detailed LES reports such as internal reports and PhD theses.
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Old   March 14, 2005, 01:53
Default Re: Numerical Implementation of LES Wall models
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tommewang
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Andy, can you tell me some details about getting such report or thesis through net (address)
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