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mshaADD A NEW RELATION TO kepsilon MODEL

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Old   December 30, 2007, 10:31
Default HI I want to use the follow
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Mojtaba Shahmohammadian
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HI

I want to use the following relation


R_=(2*k_/3)*I + ((k_*(1-Clrr2))/(Clrr1+Glrr/epsilon_-1))*(Plrr/epsilon_ - (2*Glrr/(3*epsilon_))*I)

[where

Plrr = -twoSymm(Rlrr_ & fvc::grad(U_))


Glrr =0.5*tr(Plrr)

and Clrr1,Clrr2 are constants.]


in k-epsilon model insted of bossinesque relation:

{(2.0/3.0)*I*k_ - nut_*2*symm(fvc::grad(U_))}

for reynolds stress tensor.


HOW I CAN DO THIS?

ANY COMMENT IS APPRECIATED DEEPLY.

THANKS IN ADVANCE.

MSHA
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Old   December 31, 2007, 02:21
Default help pls
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help pls
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Old   January 1, 2008, 14:34
Default I guess you'll have to impleme
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Bernhard Gschaider
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I guess you'll have to implement a new turbulence model. For instance have a look at:
http://openfoamwiki.net/index.php/Sig_Turbomachinery_/_Tutorials#How_to_implemen t_a_new_turbulence_model_.28OF-1.4.1.29
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Old   January 6, 2008, 08:06
Default HI Bernhard Gschaider AND
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Mojtaba Shahmohammadian
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HI Bernhard Gschaider

AND thank you

but I know much more than that the page you have addressed .my probles is an error you can see in previous my message

THANKS ANY WAY
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