Numerical Simulation of Transient Temperature Fields in Solids Irradiated by Moving Gaussian and Donut Sources

Abstract:

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This work presents a three-dimensional heat transfer model developed for laser material processing with a moving Gaussian and donut heat sources, using Comsol Multhiphysics 3.5 code. The laser beam, having a defined power distribution, strikes the surface of an opaque substrate of semi infinite length but finite width and depth moving with a uniform velocity in the positive axial direction. The solid dimension along the motion direction is assumed to be infinite or semi-infinite, while a finite width and thickness are considered. Thermal properties are considered temperature dependent. Surface heat losses toward the ambient are taken into account. The results are presented in terms of temperature profiles and thermal fields are given for some Biot and material thicknesses at a constant Peclet number.

Info:

Periodical:

Defect and Diffusion Forum (Volumes 312-315)

Edited by:

Andreas Öchsner, Graeme E. Murch and João M.P.Q. Delgado

Pages:

959-964

DOI:

10.4028/www.scientific.net/DDF.312-315.959

Citation:

O. Manca et al., "Numerical Simulation of Transient Temperature Fields in Solids Irradiated by Moving Gaussian and Donut Sources", Defect and Diffusion Forum, Vols. 312-315, pp. 959-964, 2011

Online since:

April 2011

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Price:

$35.00

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