A generalized thermal modeling for laser drilling process .2. Numerical simulation and results

被引:47
作者
Ganesh, RK
Faghri, A
Hahn, Y
机构
[1] UNIV CONNECTICUT,DEPT MECH ENGN,STORRS,CT 06269
[2] UNIV CONNECTICUT,DEPT PHYS,STORRS,CT 06269
关键词
D O I
10.1016/S0017-9310(96)00369-9
中图分类号
O414.1 [热力学];
学科分类号
摘要
Once the fluid configuration and the associated velocity field are obtained in a given time step using the VOF method which tracks the free surface, the energy equation is solved as an advection-diffusion equation using the control volume finite difference method. The energy equation rigorously models the phase-change both ways and tracks down the phase front as well. This paper discusses the verification of the phase-change model in cylindrical coordinates with the available results in the literature for a two-region freezing problem and its subsequent incorporation into the laser drilling model making the phase-change submodel robust in many respects. Numerical material removal rates are compared with experimental ones and found to be in good agreement. Contour plots of solid, fluid, pressure and temperature are provided at different times during the drilling process. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:3361 / &
页数:12
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