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Model ID: 699

Heating with a Moving Laser

Lasers are commonly used to achieve precision heating or welding. The beam often moves over the surface of the substrate.

One difficulty with modeling a laser heat source is the fact that the beam is very narrow (nm-mm). Another is that the laser has a certain penetration depth which may be important.

The purpose of this model is to demonstrate how to model a moving depth-distributed line heat source in COMSOL Multiphysics using a 3D-1D coupling.

The results show that the penetration depth plays an important role in the heating process.

Temperature field and penetration depth after 0.42 s of rotating the laser.

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