A Comparison of Fourier Spectral Iterative Perturbation Method and Finite Element Method in Solving Phase-Field Equilibrium Equations. (27th March 2017)

• Record Type: Journal Article
• Authors: Song, Pengcheng; Yang, Tiannan; Ji, Yanzhou; Wang, Zhuo; Yang, Zhigang; Chen, Longqing; Chen, Lei
• Is Part Of: Communications in computational physics. Volume 21:Number 5(2017:May)
• Page Start: 1325
• Page End: 1349
• Publication Date: 2017-03-27
• Subjects: 35P05; Phase-field, -- fourier spectral iterative perturbation method (FSIPM), -- finite element method (FEM), -- computational cost, -- numerical implementation; Mathematical physics -- Data processing -- Periodicals; Physics -- Data processing -- Periodicals; 530.150285
• DOI: 10.4208/cicp.OA-2016-0114
• Languages: English
• ISSNs: 1815-2406

Abstract

Abstract: This paper systematically compares the numerical implementation and computational cost between the Fourier spectral iterative perturbation method (FSIPM) and the finite element method (FEM) in solving partial differential equilibrium equations with inhomogeneous material coefficients and eigen-fields (e.g., stress-free strain and spontaneous electric polarization) involved in phase-field models. Four benchmark numerical examples, including inhomogeneous elastic, electrostatic, and steady-state heat conduction problems demonstrate that (1) the FSIPM rigorously requires uniform hexahedral (3D) and quadrilateral (2D) mesh and periodic boundary conditions for numerical implementation while the FEM permits arbitrary mesh and boundary conditions; (2) the FSIPM solutions are comparable to their FEM counterparts, and both of them agree with the analytic solutions, (3) the FSIPM is much faster in solving equilibrium equations than the FEM to achieve the accurate solutions, thus exhibiting a greater potential for large-scale 3D computations.