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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 354Effects of High Reynolds Number Impinging Jet on...

Effects of High Reynolds Number Impinging Jet on the Heat Conduction in Work-Pieces Irradiated by a Moving Heat Source

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Abstract:

A three dimensional conductive field is analyzed and solved numerically by means of a commercial code. The investigated work-pieces are made up of a simple brick-type solid. A laser source with combined donut-Gaussian distributions is considered moving with a constant velocity along motion direction. The solid dimension along the motion direction is assumed to be infinite or semi-infinite, while finite width (2l_y) and thickness (s) are considered. Thermal properties are considered temperature dependent and the materials are considered isotropic. Surface heat losses toward the ambient are taken into account. Several Reynolds numbers of the impinging jet, Biot and Peclet numbers are considered with negligible radiative heat losses. Results are presented in terms of temperatures field and profile to evaluate the effect of impinging jet.

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Periodical:

Defect and Diffusion Forum (Volume 354)

Pages:

189-194

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.354.189

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Online since:

June 2014

Authors:

Oronzio Manca*, Sergio Nardini, D. Ricci, S. Tamburrino

Keywords:

Laser Source, Manufacturing, Moving Sources, Transient Heat Conduction

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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