Paper Title:
Simulation Study of Keyhole Formation during Laser Deep Penetration Welding
  Abstract

The elaborated model solves the coupled equations of a laminar fluid flow and heat transfer to predict the temperature distribution in the weld pool. The enthalpy-porosity technique was employed to account for the latent heat during melting and solidification. The coupled effects of buoyancy and Marangoni forces are considered in this model. The volume-of-fluid (VOF) method was employed to track free surfaces of weld pool. The molten temperature distribution, velocity field and molten shape were calculated using FLUENT software. The results clearly demonstrate Marangoni flow significantly alters the characteristics of the thawing and solidifying process, and makes the molten wider and shallower.

  Info
Periodical
Edited by
Ran Chen
Pages
400-403
DOI
10.4028/www.scientific.net/AMM.44-47.400
Citation
R. P. Wang, Y.P. Lei, "Simulation Study of Keyhole Formation during Laser Deep Penetration Welding", Applied Mechanics and Materials, Vols. 44-47, pp. 400-403, 2011
Online since
December 2010
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