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-   -   Law-of-the-wall and Wall functions (http://www.cfd-online.com/Forums/main/5144-law-wall-wall-functions.html)

 Bo Busk Jensen September 11, 2002 04:50

Law-of-the-wall and Wall functions

Hallo All

A very simple question. Using standard k-e models the near-wall region should be described by....

1) is it described by a wall function that use what is stated in the law-of-the-wall

2) is it described by the law-of-the-wall

Are wall functions a general term for different ways of treating what is inside y+ 30, where the law-of-the-wall is one way to do it??

Regards

Bo

 Abhi September 11, 2002 07:29

Re: Law-of-the-wall and Wall functions

hi i can probably answer you but i didn't understand ur questin. Can you please clearly tell again?

 Bo Busk Jensen September 11, 2002 08:13

Re: Law-of-the-wall and Wall functions

Hallo All

A very simple question. Using standard k-e models the near-wall region should be described by....

1) a wall function that use the law-of-the-wall

2) the law-of-the-wall

Are wall functions a general term for different ways of treating what is inside y+ = 30??

Regards

Bo

 Jim Park September 11, 2002 09:06

Re: Law-of-the-wall and Wall functions

My understanding is that:

1. "Wall functions" are a way of modeling the complex turbulent fluid behavior very near a solid wall that bounds a turbulent flow, and

2. The "law of the wall" is the result of many careful measurements of one configuration of turbulent flow, the flow over a flat plate.

So, there is the general technique and a particular example.

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