Publication Cover
Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 59, 2011 - Issue 12
167
Views
5
CrossRef citations to date
0
Altmetric
Original Articles

Laser Heating and Flow Field Developed in the Melt Pool

&
Pages 970-987 | Received 19 Nov 2010, Accepted 09 Apr 2011, Published online: 08 Jun 2011
 

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.

Acknowledgments

The authors acknowledge the support of King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia.

Notes

The solidus and liquidus temperatures of steel are 1766 and 1788 K, respectively [Citation27].

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.