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Indexed by:期刊论文

Date of Publication:2010-04-01

Journal:INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER

Included Journals:SCIE、EI

Volume:37

Issue:4

Page Number:385-392

ISSN No.:0735-1933

Key Words:Heat transfer; Phase change; Element-free Galerkin method; Sigmoid function

Abstract:This paper presents a smoothed effective heat capacity model that is combined with element-free Galerkin (EFG) method, to solve heat transfer problems with phase change. The Sigmoid function is employed to build a continuous and smooth effective heat capacity function, so as to avoid possible error caused by the step-jump. The proposed numerical model is verified via numerical examples, and the effects of arrangement of EFG nodes and parameters relevant with Sigmoid function on the solutions are investigated. Satisfactory results are achieved in comparison with analytical solutions. (C) 2009 Elsevier Ltd. All rights reserved.