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liquid vapor interface in laser drilling problems

Posted Feb 2, 2016, 6:57 a.m. EST Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD), Mesh Version 5.1 1 Reply

Shashank Sharma
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Can we modify the continuity equation in laminar two phase level set, i wish to incorporate evaporation effect which require a source term instead of "0", in the continuity equation?

www.comsol.co.in/paper/keyhole-formation-during-spot-laser-welding-heat-and-fluid-flow-modeling-in-a-2d-13189


1 Reply Last Post Dec 5, 2016, 8:00 a.m. EST
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Hello Shashank Sharma

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Mattia Zambolin
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Posted: 8 years ago Dec 5, 2016, 8:00 a.m. EST
Yes, you can.
Under "equation view" mode, select the equation view of "fluid properties" and, under weak expression you find the line:

-tpf.divu*test(p)

Replace it with:

-tpf.divu*test(p)+your_source_term*test(p)

and you modified the continuity equation.


Yes, you can. Under "equation view" mode, select the equation view of "fluid properties" and, under weak expression you find the line: -tpf.divu*test(p) Replace it with: -tpf.divu*test(p)+your_source_term*test(p) and you modified the continuity equation.

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