THREE-DIMENSIONAL MODEL FOR CONVECTION IN LASER WELD POOL.

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

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

11 Scopus citations

Abstract

Two three-dimensional models of a surface tension gradient driven flow during laser surface heating are developed. The first model is based on a perturbation solution. The basic solution corresponds to the stationary axisymmetric case, and perturbation is based on a small scanning velocity. The advantage of seeking a perturbation solution, as it turns out, is that the three-dimensional flow is modeled by two sets of two-dimensional equations which are presumably much more tractable than the original three-dimensional equations. Numerical solutions are obtained and discussed. The second model is a full three-dimensional numerical solution of the Navier-Stokes equations, using a point-by-point partially vectorized iteration scheme. Surface shape is also determined in a self-consistent manner. The effect of the presence of convection on pool geometry, cooling rate, and solute redistribution is presented and discussed.

Original languageEnglish (US)
Title of host publicationUnknown Host Publication Title
EditorsSindo Kou, Robert Mehrabian
PublisherMetallurgical Soc of AIME
Pages229-246
Number of pages18
ISBN (Print)0873390210
Publication statusPublished - 1986
Externally publishedYes

    Fingerprint

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Chan, C., Zehr, R., Mazumder, J., & Chen, M. M. (1986). THREE-DIMENSIONAL MODEL FOR CONVECTION IN LASER WELD POOL. In S. Kou, & R. Mehrabian (Eds.), Unknown Host Publication Title (pp. 229-246). Metallurgical Soc of AIME.