Proceedings ArticleDOI
Coupled boundary element method and finite difference method for laser drilling
Sirilath De Silva,Cho Lik Chan +1 more
- Vol. 2000, Iss: 1
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TLDR
In this article, boundary element method formulation for the transient three-dimensional heat conduction equation with moving boundary is presented, which is an effective way to simulate the melting process during laser drilling.Abstract:
In this presentation, we focus on the simulation of the melting phenomenon during laser drilling. The governing equation is the transient three-dimensional heat conduction equation. However, the melting interface is moving and needs to be determined as part of the solution. In this paper, boundary element method formulation for the transient three-dimensional heat conduction equation with moving boundary will be presented. The moving boundary, solid-liquid interface, appears in the surface integral. Consequently, it is easy to track. To increase the efficiency of the computation, we combine the boundary element method formulation with finite difference method. Stefan’s boundary condition is applied along the melting interface. The coupled BEM-FDM is an effective way to simulate the melting process.In this presentation, we focus on the simulation of the melting phenomenon during laser drilling. The governing equation is the transient three-dimensional heat conduction equation. However, the melting interface is moving and needs to be determined as part of the solution. In this paper, boundary element method formulation for the transient three-dimensional heat conduction equation with moving boundary will be presented. The moving boundary, solid-liquid interface, appears in the surface integral. Consequently, it is easy to track. To increase the efficiency of the computation, we combine the boundary element method formulation with finite difference method. Stefan’s boundary condition is applied along the melting interface. The coupled BEM-FDM is an effective way to simulate the melting process.read more
Citations
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Journal ArticleDOI
An analytical model for laser drilling incorporating effects of exothermic reaction, pulse width and hole geometry
GK Ng,Philip Crouse,Lin Li +2 more
TL;DR: In this paper, an analytical model is presented which incorporates the effects of using O2 as assist gas and the contribution of the enthalpy of oxidation used in the model was determined experimentally by capturing the ejected melt and measuring the volume percentage of oxidation.
Journal ArticleDOI
Scaled boundary finite-element method for solving non-homogeneous anisotropic heat conduction problems
Mohammad Bazyar,Abbas Talebi +1 more
TL;DR: In this article, the scaling boundary finite element method (SBFEM) is employed to solve two-dimensional heat conduction problems, where only the boundary is discretized to reduce the special discretization by one.
Journal ArticleDOI
Coupled boundary element method and finite difference method for the heat conduction in laser processing
Sirilath J. DeSilva,Cho Lik Chan +1 more
TL;DR: In this paper, a coupled BEM-FDM method is formulated to simulate the heat conduction process, which can handle large fluxes very easily and it also can be formulated if needed to incorporate the moving boundary problem in a unique manner.