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Old   April 15, 2011, 11:14
Default 2 gases mixing flow
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I would like to know your opinion on a Fluent study in progress...

I've to model a flow in a tube with his plume in ambient air. The inlet is composed by "gaz 1" (at 2000 K).
Afer few seconds, inlet pressure = 0 Pa. And then i've to study temperature versus time of the tube walls.

My first idea is to put the model in laminar because the velocity of the 2 fluids is very very low, so i think natural convection is predominant but my model is in 2d-axi, i can't add gravity (gravity axe is perpendicular to the axe of tube...). Moreover, if i use k-e standard model, the ambient air does not penetrate in the tube...

Thank you in advance for your advice,
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