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Apply heat souce on moving gas/liquid interface?

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Old   April 23, 2014, 13:50
Default Apply heat souce on moving gas/liquid interface?
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Hi all,

I am using Ansys CFX to simulate laser weld molten pool flow. The laser heat needs to be applied on the gas/liquid metal interface, which is moving as liquid metal evaporates. My question is how to track the interface and apply the heat source there? Can the interface location be accessed as an internal variable, similar to gas.vf and liquid.vf?

Thanks for your help.

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Old   April 24, 2014, 03:51
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Some ideas:

You could model the laser with a radiation model. Then the heating would occur at the correct place when you have set the absorbance, reflectivity and everything else.

You could assume the surface occurs when the volume fraction is between 0.1 and 0.9 (for example). This approach only works if your interface is well defined.
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