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bouyancy driven flow

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Old   July 11, 2005, 12:39
Default bouyancy driven flow
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nicola
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I'm running a case of bouyancy driven flow in a box-test geometry; I've got an upper "pressure outlet" surface and a lower "pressure inlet" surface. Lateral surface are "symmetry" type but in the middle, on one hand, there's a "wall" type surface at 293.15 K. I'm running with only air as compressible ideal gas. The bulk temperature, as the inlet and outlet temperature, is fixed at 373.15K. Operating pressure is 2 bar. Viscosity model is RNG K-e. Is it necessary to use an Enanched Wall Treatment option to take into account correctly the effect of buoyancy near the cooled wall or it's possible to use Standard Wall Function?
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Old   July 12, 2005, 12:11
Default Re: bouyancy driven flow
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Evan Rosenbaum
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You can use standard wall functions provided you check your y+ values.
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