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A Numerical Model for Transient Heat Conduction in Semi-Infinite  Solids Irradiated by a Moving Heat Source

N. Bianco[1], O. Manca[2], S. Nardini[2], and S. Tamburrino[2]
[1]Dipartimento di Energetica, Termofluidodinamica applicata e Condizionamenti ambientali, Università degli Studi Federico II, Napoli, Italy
[2]Dipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università degli Studi di Napoli, Aversa (CE), Italy
发布日期 2008

A numerical analysis on transient three-dimensional temperature distribution in a semi-infinite solid, irradiated by a moving Gaussian laser beam, is carried out numerically by means of the code COMSOL Multiphysics. The investigated workpiece is simply a solid. A laser source is considered moving with constant velocity along the motion direction. The convective heat transfer on the upper surface of the solid is taken into account to simulate an impinging jet. The results are presented in terms of temperature profiles and thermal fields are given for some Biot numbers.

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