Hi everyone, Is there a method to model laser drilling in COMSOL. I would like to see the thermal distribution through the thickness of a material during the laser drilling process. I suppose this will be a transient thermal analysis. Thanks
Dear, Buddhi I can't say about the method to model laser drilling but to see the thermal distribution you can use the heat transfer module and structural mechanics module
Dear Himanshu,
Thanks for your valuable response. I did found a way to apply Gaussian laser pulses at the centre to a material in COMSOL and obtain the thermal distribution. Its something like this. What do you think about it. But, if there is a possibility to show the melting of the material that would be great
Depend on your laser diameter, laser intensity (I assume uniform, stable laser intensity in the laser beam), the metal concerned. The rest could use heat equation to solve it!
Another problem with thermal distribution is you want an equilibrium thermal distribution or not.
Assuming it is non equilibrium, in each infinitely small piece, thermal conductivity & temperature difference/length will determine rate of heat flow at that instant. As temperature rise up, rate of heat flow entering decrease but heat flow leaving is increase! Thus, we will have to integrate rate of heat enter + rate of heat leaving at point r from laser (assume laser is so small that it can be treated as point & laser should be ideally small) in order to calculate temperature in function of time. In this way, we can plot a graph to tell the equilibrium temperature & time taken to achieve 1 degree K/C above equilibrium temperature (for practical purpose).
Hope this imagination helps!
Everyone is welcomed to correct me if I am wrong.
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