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Euler-Euler Multiphase with LES?

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Old   October 2, 2009, 06:14
Default Euler-Euler Multiphase with LES?
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Hi,

I am kinda confused with the Euler-Euler approach for two-phase (gas-liquid) flow using LES. In the EE-approach, the NS equations are averaged and by applying LES, I filtered the equations again (which is also some sort of averaging). Is this valid? Doesn't it mean that you are averaging an already averaged equation? I hope someone can elaborate on this. Thanks in advance.
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Old   October 5, 2009, 15:21
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Quote:
Originally Posted by story View Post
Hi,

I am kinda confused with the Euler-Euler approach for two-phase (gas-liquid) flow using LES. In the EE-approach, the NS equations are averaged and by applying LES, I filtered the equations again (which is also some sort of averaging). Is this valid? Doesn't it mean that you are averaging an already averaged equation? I hope someone can elaborate on this. Thanks in advance.
Why you consider averaging ?


Will it be possible to consider a different modelling approach!!!
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Old   October 6, 2009, 03:31
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well... the euler-euler equations are already averaged for use of the k-e model. but some people used LES instead of k-e. but LES is for filtered NS equations. In a single phase flow its no problem. but is this really valid for a two-phase flow?
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