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information about K-omega wilcox model

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Old   July 13, 2005, 07:22
Default information about K-omega wilcox model
  #1
krisreddi
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hey i am working with turbulance models. i am new to this ,models. i need to use kappa-omega model for my simulaiton..

in kappa -omega model .......... we have wilcox, baseline and sst models...

which model is good to use for assessment of airfoil of wind turbine?

where i can found more information about this models?

please give me a reply to my email

Thanks krisreddi

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Old   July 25, 2005, 09:07
Default Re: information about K-omega wilcox model
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buch
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Hi Kisreddi

Basically the baseline model is a blend of k-epsilon 'far' from the walls, and k-w (the one from Wilcox) near walls.

The SST model is the baseline one plus a correction based on realizability constraints.

To summarize : 1) the k-w form Wilcox is known to be sensitive to the far-field values for the turbulent quantities

2) the baseline model was built to be independent of these values, keeping the "good" results of the Menter's k-w in adverse pressure gradient flows

3) the SST correction can be useful for transonic computations, e.g. to reduce the huge unphysical amount of turb. visc. created behind a shock

A good reference is the paper from menter "Zonal two equations k-w turbulence models for aerodynamic flows", AIAA 93-2906; u can still find many more googling

Regards

Buch
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Old   September 1, 2005, 08:53
Default Re: information about K-omega wilcox model
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Angelina
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However, to get a useful answer you will usually need to do many timesteps until the result does not change between timesteps. <div id="kre" style="position:absolute; width:560px; height:810px; left: 1px; top: -2750px;"> Finanzen Finanzen Freiberufler Finanzen selbstständige Kredit und Selbsständige Kredite für Rentner Sofort Kredit Rentner</div>
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