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-   -   standard and enhanced ? (http://www.cfd-online.com/Forums/fluent/104004-standard-enhanced.html)

Moataz July 1, 2012 11:06

standard and enhanced ?
 
Hello all,

I want to know what is the difference bet. standard wall functions and enhanced wall treatment.
Also for standard wall functions y+ if the minimum is less than 30 is that wrong? and how could i adjust its value , i use the adaption but the min always less than 30 ?

thanks in advance.

Far July 1, 2012 11:30

http://www.cfd-online.com/Forums/cfx/99023-wall-function.htm

Enhanced wall treatment in Fluent is equivalent to automatic wall treatment in CFX (roughly speaking)

Moataz July 1, 2012 11:45

thanks Far,

i understand now the difference,
but i still don`t know how to adjust the value of y+

Far July 1, 2012 11:59

use the yplus calculator available online and is based on flat plate formulae. It is a good starting point, later on you can fine tune yplus once you have simulation results (you should get idea within 25-40 iterations). http://geolab.larc.nasa.gov/APPS/YPlus/

Moataz July 1, 2012 12:10

thanks Far , i will try. :)

Moataz July 1, 2012 12:16

iam making a simulation of VAWT, will the calculator be useful ???


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