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Gas mixing - newbie question

Posted 23 mars 2010, 06:58 UTC−4 0 Replies

Michael Bielmann
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Hello,

I'm pretty new to Comsol and have a pretty newbie question. I want to simulate the following (which should be pretty trivial, I guess..)

I have a vessel with 2 Inlets, on both Inlets a different gas enters at a specific flow rate

The two gases mix in the vessel

Required results:

Flow field
Concentration of the gases within the vessel ("mixing")

Now, I'm pretty lost about what app-mode to select. Navier Stokes calculates the flow field. But it requires one gas - but density, viscosity etc. of the gas is not constant in the vessel (well, i mix two gases after all) So what's the approach?

The mixing should be approachable by convection and diffusion. But Maxwell-Stefan-App-Mode again requires ONE Density - but that can not be specified, can it? It's basically the result of the simulation.

Anybody got a tip on how to approach that easy problem and help a Newbie?

Thanks, Mike
0 Replies Last Post 23 mars 2010, 06:58 UTC−4
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