In the heat transfer equation for laser drilling, which is the lateral..?

FratBro23
Category:
Physics
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Question description

The heat equation for heat transfer (heating without change of phase) for lasers over infinite half space and uniform irradiance is as follows


Which part of this equation represents the lateral diffusion term and under which assumptions can be considered negligible? Could you also please define lateral diffusion in the context of the uniform laser beam incident on the plane material?

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(Top Tutor) Daniel C.
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