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B.C and Grid size LES Fluent

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Old   April 16, 2009, 13:08
Default B.C and Grid size LES Fluent
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vishwanath somashekar
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Hi,
I am using fluent to run a LES simulation on a reactor which has two inlets and a outlet.

The inlet jet reynolds number is about 1000 and the inlet is rectanguar (aspect ratio 1:2)..

I calculated the kolomogov scale based on this Re and Lo being the width of the reactor chamber to which the inlets connect.. and i found that to be of the order of 15microns.

I thne made a grid and when I checked the grid info, the minimum cell volume is of the same order as the kolmogorov scale..

The inlet condtions are uniform flow and the outlet condition is outflow.

I have read that you need to have a reasonable good input BC (perhaps from that of K-epsilon model).. Can anyone help me in guiding towards the right path..

Regards,
dagarshali
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