THREE-DIMENSIONAL MODEL FOR CONVECTION IN LASER MELTED POOL.

C. Chan; J. Mazumder; M. M. Chen

THREE-DIMENSIONAL MODEL FOR CONVECTION IN LASER MELTED POOL.

C. Chan, J. Mazumder, M. M. Chen

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A three-dimensional axis-symmetry model of the fluid flow and heat transfer of laser melted pool is developed. The model corresponds physically to a stationary laser source. Non-dimensional forms of the governing equations are derived. Four dimensionless parameters arise from the non-dimensionalization, namely, Marangoni number, Prandtl number, Dimensionless melting temperature, and Radiation factor. Their effects and significances are discussed. Numerical solutions are obtained. The solid liquid interface, which is not known a priori, is solved. Quantitative effects of the dimensionless parameters on pool shape are obtained. In the presence of the flow field, the heat transfer becomes convection dominated. Its effect on isotherms within the molten pool is discussed. Experimental results are presented.

Original language	English (US)
Title of host publication	LIA (Laser Institute of America)
Publisher	Laser Inst of America
Pages	17-27
Number of pages	11
ISBN (Print)	0912035250
State	Published - Dec 1 1985
Externally published	Yes

Publication series

Name	LIA (Laser Institute of America)
Volume	43-48

ASJC Scopus subject areas

Engineering(all)

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Chan, C., Mazumder, J., & Chen, M. M. (1985). THREE-DIMENSIONAL MODEL FOR CONVECTION IN LASER MELTED POOL. In LIA (Laser Institute of America) (pp. 17-27). (LIA (Laser Institute of America); Vol. 43-48). Laser Inst of America.

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N2 - A three-dimensional axis-symmetry model of the fluid flow and heat transfer of laser melted pool is developed. The model corresponds physically to a stationary laser source. Non-dimensional forms of the governing equations are derived. Four dimensionless parameters arise from the non-dimensionalization, namely, Marangoni number, Prandtl number, Dimensionless melting temperature, and Radiation factor. Their effects and significances are discussed. Numerical solutions are obtained. The solid liquid interface, which is not known a priori, is solved. Quantitative effects of the dimensionless parameters on pool shape are obtained. In the presence of the flow field, the heat transfer becomes convection dominated. Its effect on isotherms within the molten pool is discussed. Experimental results are presented.

AB - A three-dimensional axis-symmetry model of the fluid flow and heat transfer of laser melted pool is developed. The model corresponds physically to a stationary laser source. Non-dimensional forms of the governing equations are derived. Four dimensionless parameters arise from the non-dimensionalization, namely, Marangoni number, Prandtl number, Dimensionless melting temperature, and Radiation factor. Their effects and significances are discussed. Numerical solutions are obtained. The solid liquid interface, which is not known a priori, is solved. Quantitative effects of the dimensionless parameters on pool shape are obtained. In the presence of the flow field, the heat transfer becomes convection dominated. Its effect on isotherms within the molten pool is discussed. Experimental results are presented.

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