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TECHNICAL BRIEFS

Thermal Analysis of Solids at High Peclet Numbers Subjected to Moving Heat Sources

[+] Author and Article Information
O. Manca, B. Morrone

Dipartimento di Ingegneria Aerospaziale, Seconda Universita di Napoll, Via Roma, 29, 81031 Aversa (CE), Italy

S. Nardini

Dipartimento di Energetica, Termofluidodinamica Applicata e Condizionamenti Ambientali, Università degli Studi Federico II, Piazzale Tecchio, 80, 80125 Napoli, Italy

J. Heat Transfer 121(1), 182-186 (Feb 01, 1999) (5 pages) doi:10.1115/1.2825939 History: Received October 22, 1997; Revised July 23, 1998; Online December 05, 2007

Abstract

A three-dimensional heat transfer model has been developed to obtain the conductive thermal field inside a brick-type solid under a moving heat source with different beam profiles. The problem in quasi-steady state has been approximated by neglecting the axial diffusion component; thus, for Peclet numbers greater than 5, the elliptic differential equation becomes a parabolic one along the motion direction. The dependence of the solution on the radiative and convective heat losses has been highlighted. Thermal fields are strongly dependent on different spot shapes and on the impinging jet; this situation allows control of the parameters involved in the technological process.

Copyright © 1999 by The American Society of Mechanical Engineers
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