Laser heating and flow field developed in the melt pool

S. Z. Shuja; B. S. Yilbas

doi:10.1080/10407782.2011.582418

Laser heating and flow field developed in the melt pool

S. Z. Shuja, B. S. Yilbas

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Laser heating of steel and formation of a melt pool in the laser-heated surface are examined. Temperature field in the irradiated region and the velocity field in the melt layer are predicted numerically. The numerical simulations are in line with the experiment to compare the melt size. The control volume approach is introduced in the numerical simulation, and the porosity-enthalpy method is adopted to accommodate the mushy zone during the phase change process. It is found that temperature decays sharply below the surface; however, it decreases gradually along the r-axis due to the laser power intensity distribution at the surface, which is Gaussian. Two contra-rotating circulation cells are formed in the melt pool. The size of the melt pool predicted agrees with the experimental findings.

Original language	English
Pages (from-to)	970-987
Number of pages	18
Journal	Numerical Heat Transfer; Part A: Applications
Volume	59
Issue number	12
DOIs	https://doi.org/10.1080/10407782.2011.582418
State	Published - Jan 2011

Bibliographical note

Funding Information:
Received 19 November 2010; accepted 9 April 2011. The authors acknowledge the support of King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia. Address correspondence to B. S. Yilbas, Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Box 1913, Dhahran 31261, Saudi Arabia. E-mail: bsyilbas@ kfupm.edu.sa

ASJC Scopus subject areas

Numerical Analysis
Condensed Matter Physics

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10.1080/10407782.2011.582418

Cite this

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title = "Laser heating and flow field developed in the melt pool",

abstract = "Laser heating of steel and formation of a melt pool in the laser-heated surface are examined. Temperature field in the irradiated region and the velocity field in the melt layer are predicted numerically. The numerical simulations are in line with the experiment to compare the melt size. The control volume approach is introduced in the numerical simulation, and the porosity-enthalpy method is adopted to accommodate the mushy zone during the phase change process. It is found that temperature decays sharply below the surface; however, it decreases gradually along the r-axis due to the laser power intensity distribution at the surface, which is Gaussian. Two contra-rotating circulation cells are formed in the melt pool. The size of the melt pool predicted agrees with the experimental findings.",

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Laser heating and flow field developed in the melt pool

Abstract

Bibliographical note

ASJC Scopus subject areas

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