AXIS-SYMMETRY MODEL FOR CONVECTION IN A LASER MELTED POOL.

Cholik Chan, J. Mazumder, M. M. Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

An 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 form of the governing equations are derived. Four dimensionless parameters arise from the non-dimensionalization, namely, Peclet number, Prandtl number, Dimensionless melting temperature, and Radiation factor. Their effects and significances are discussed. Numerical solutions for some low melting point metals 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 order to understand the process in a more physical sense, the effects on pool shape due to process parameters, total power and beam radius, are also presented. In the presence of the flow field, the heat transfer becomes convection dominated. Its effect on isotherms within the molten pool is discussed.

Original languageEnglish (US)
Title of host publicationUnknown Host Publication Title
PublisherMetallurgical Soc of AIME
Pages3-16
Number of pages14
ISBN (Print)0895204924
StatePublished - 1985
Externally publishedYes

Fingerprint

Melting point
Heat convection
Peclet number
Lasers
Prandtl number
Isotherms
Molten materials
Flow of fluids
Flow fields
Heat transfer
Radiation
Liquids
Metals
Convection

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Chan, C., Mazumder, J., & Chen, M. M. (1985). AXIS-SYMMETRY MODEL FOR CONVECTION IN A LASER MELTED POOL. In Unknown Host Publication Title (pp. 3-16). Metallurgical Soc of AIME.

AXIS-SYMMETRY MODEL FOR CONVECTION IN A LASER MELTED POOL. / Chan, Cholik; Mazumder, J.; Chen, M. M.

Unknown Host Publication Title. Metallurgical Soc of AIME, 1985. p. 3-16.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Chan, C, Mazumder, J & Chen, MM 1985, AXIS-SYMMETRY MODEL FOR CONVECTION IN A LASER MELTED POOL. in Unknown Host Publication Title. Metallurgical Soc of AIME, pp. 3-16.
Chan C, Mazumder J, Chen MM. AXIS-SYMMETRY MODEL FOR CONVECTION IN A LASER MELTED POOL. In Unknown Host Publication Title. Metallurgical Soc of AIME. 1985. p. 3-16
Chan, Cholik ; Mazumder, J. ; Chen, M. M. / AXIS-SYMMETRY MODEL FOR CONVECTION IN A LASER MELTED POOL. Unknown Host Publication Title. Metallurgical Soc of AIME, 1985. pp. 3-16
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