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More services...How do Comsol handles variable density?
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Last post: March 17, 2010 4:15pm UTC
March 17, 2010 3:20pm UTC
How do Comsol handles variable density?
I'm modelling the refrigeration of a liquid, which properties are dependent of the Temperature. One of them ist the density. Therefore the liquid may lose volume as it cools down. Which I understand as a form of compression.
As navier-stokes can only be used by incompressible fluids, I was predicting a error in the solution (about 20%).
The fact is, the solution was not that bad (error about 5%). Can COMSOL compesate this kind of compression?
thanks
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March 17, 2010 4:15pm UTC in response to Marcus Lopes
Re: How do Comsol handles variable density?
Oh, I got it.
There is a Weakly Compressible Navier-Stokes for Heat Module. My calculation with the Navier-Stokes is not correct.
The Weakly Compressible Navier-Stokes uses drho/dt+div rho u = 0 instead of div u=0
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