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论文类型：期刊论文

发表时间：2014-02-01

发表刊物：ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS

收录刊物：SCIE、EI

卷号：39

期号：1

页面范围：36-43

ISSN号：0955-7997

关键字：Boundary element method; Radial integration method; Phase solidification; Front-tracking; Transient heat conduction

摘要：In this paper, a new boundary element analysis approach is presented for solving one-phase solidification and freezing problems based on the radial integration method. Green's function for the Laplace equation is adopted in deriving basic integral equations for time-dependent problems with constant heat conductivities and, as a result, a domain integral is involved in the derived integral equations. Based on the finite difference technique, an implicit time marching solution scheme is developed for solving the time-dependent system of equations. Front-tracking method is used to simulate the motion of the phase boundary. To accomplish this purpose, an iterative implicit solution algorithm has been developed by employing the radial integration BEM. To validate the proposed method, two typical examples are given. Satisfactory results are obtained in comparison with semi-analytical solutions. (C) 2013 Elsevier Ltd. All rights reserved.