Abstract
Laser pulse heating and the phase-change process taking place in the region irradiated by a laser beam are considered. A numerical method is employed to predict temperature field and recessing velocities of evaporating and melting surfaces. An experiment is conducted to compare the cavity size obtained from experiment with the prediction. The prediction of the recession velocity of the evaporating surface is compared with the results of a one-dimensional closed-form solution. It is found that the mushy zones at the solid-liquid and liquid-vapor interfaces are visible at some depth below the irradiated surface. The recession velocity of the evaporating front velocity follows almost the temporal variation of the laser heating pulse; moreover, recession velocity of the solid-liquid interface is higher than that corresponding to the liquid-vapor interface. The cavity shape predicted from the present simulation agrees well with experiment. In addition, the prediction of the recession velocity of the evaporating surface agrees well with the closed-form solutions.
| Original language | English |
|---|---|
| Pages (from-to) | 787-807 |
| Number of pages | 21 |
| Journal | Numerical Heat Transfer; Part A: Applications |
| Volume | 50 |
| Issue number | 8 |
| DOIs | |
| State | Published - 1 Sep 2006 |
Bibliographical note
Funding Information:Received 15 July 2005; accepted 3 February 2006. The authors acknowledge the support of King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia, for this work. Address correspondence to B. S. Yilbas, Department of Mechanical Engineering, King Fahd University of Petroleum & Minerals, KFUPM P.O. Box 1913, Dhahran 31261, Saudi Arabia. E-mail: [email protected]
ASJC Scopus subject areas
- Numerical Analysis
- Condensed Matter Physics