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A new complex variable meshless method for transient heat conduction problems

2012; IOP Publishing; Volume: 21; Issue: 12 Linguagem: Inglês

10.1088/1674-1056/21/12/120206

2058-3834

Jianfei Wang, Yumin Cheng,

Advanced Numerical Methods in Computational Mathematics

In this paper, based on the improved complex variable moving least-square (ICVMLS) approximation, a new complex variable meshless method (CVMM) for two-dimensional (2D) transient heat conduction problems is presented. The variational method is employed to obtain the discrete equations, and the essential boundary conditions are imposed by the penalty method. As the transient heat conduction problems are related to time, the Crank-Nicolson difference scheme for two-point boundary value problems is selected for the time discretization. Then the corresponding formulae of the CVMM for 2D heat conduction problems are obtained. In order to demonstrate the applicability of the proposed method, numerical examples are given to show the high convergence rate, good accuracy, and high efficiency of the CVMM presented in this paper.