Abstract
Laser short pulse heat can be applied widely in industry. The modelling of laser heat is fruitful when exploring the physical process involved during interaction between laser and workpiece. In this study, a modelling of laser short pulse heating is considered with convection boundary conditions. Electron kinetic theory and the Fourier heating model are taken into account when modelling the heating process. The governing equations are nondimensionalized and the numerical method employing a finite difference scheme is introduced for solving the governing equations. The range of Biot number (Bi) values is considered to account for the convection loss from the surface during the heating process. The predictions of electron kinetic theory and the Fourier heating model are compared with the two-equation model predictions. It is found that the effect of the Bi is significant on the temperature rise in the surface vicinity. The electron kinetic theory predictions at high Bi approach the Fourier heating model findings as the heating progresses.
| Original language | English |
|---|---|
| Pages (from-to) | 423-442 |
| Number of pages | 20 |
| Journal | Numerical Heat Transfer; Part A: Applications |
| Volume | 38 |
| Issue number | 4 |
| DOIs | |
| State | Published - Sep 2000 |
Bibliographical note
Funding Information:Received 30 November 1999; accepted 2 March 2000. The authors acknowledge the support of King Fahd University of Petroleum and Dhahran, Saudi Arabia, for this work. Address correspondence to Professor Bekir Sami Yilbas, Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, KFUPM, PO. B.x 19o, 1Dha3hran 31261, Saudi Arabia.
ASJC Scopus subject areas
- Numerical Analysis
- Condensed Matter Physics