Ravindran, K. ; Srinivasan, J. ; Marathe, A. G. (1994) Finite element study on the role of convection in laser surface melting Numerical Heat Transfer Part A: Applications, 26 (5). pp. 601-618. ISSN 1040-7782
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Official URL: http://www.tandfonline.com/doi/abs/10.1080/1040778...
Related URL: http://dx.doi.org/10.1080/10407789408956012
Abstract
The surface-tension-driven convection in laser melting has been simulated by the Galerkin finite element method. The governing laminar, axisymmelric convection equations are solved in a sequential manner by an explicit projection method. The numerical results show a strong dependence of the flow pattern on the value of the temperature coefficient of surface tension (σT). Results are presented for a range of σT values typical in steel, -l0-4≤σT + l0-4N/mK. As the melt depth is more affected than the width, the melt aspect ratio changes due to convection. The melt pool is broad and shallow when σT<0, and deep and narrow when σT>0.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Taylor and Francis Group. |
| ID Code: | 79924 |
| Deposited On: | 30 Jan 2012 05:11 |
| Last Modified: | 30 Jan 2012 05:11 |
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