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why cant i find the right average Nusselt number?

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Old   November 26, 2012, 15:00
Post why cant i find the right average Nusselt number?
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Hi friends,
i am simulating natural convection in square cavity: i computed the Nu average by fluent 6.3 : facet average/wall fluxes/surface nusselt number/heat wall
but my results is bigger than the results benchmark(de Vahl Davis)
have i a mistakes?please explain me how to get best results ,could u give me all the steps please?
thank you very much
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