Journal of Scientific Computing

, Volume 52, Issue 3, pp 588–602

Error Analysis of Chebyshev-Legendre Pseudo-spectral Method for a Class of Nonclassical Parabolic Equation

Article

DOI: 10.1007/s10915-011-9560-9

Cite this article as:
Zhao, T., Wu, Y. & Ma, H. J Sci Comput (2012) 52: 588. doi:10.1007/s10915-011-9560-9

Abstract

Many physical phenomena are modeled by nonclassical parabolic initial boundary value problems which involve a nonclassical term uxxt in the governed equation. Combining with the Crank-Nicolson/leapfrog scheme in time discretization, Chebyshev-Legendre pseudo-spectral method is applied to space discretization for numerically solving the nonclassical parabolic equation. The proposed approach is based on Legendre Galerkin formulation while the Chebyshev-Gauss-Lobatto (CGL) nodes are used in the computation. By using the proposed method, the computational complexity is reduced and both accuracy and efficiency are achieved. The stability and convergence are rigorously set up. The convergence rate shows ‘spectral accuracy’. Numerical experiments are presented to demonstrate the effectiveness of the method and to confirm the theoretical results.

Keywords

Chebyshev-Legendre pseudo-spectral methodNonclassical parabolic equationStabilityConvergence

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.School of MathematicsLanzhou City UniversityLanzhouChina
  2. 2.School of Mathematics and StatisticsLanzhou UniversityLanzhouChina
  3. 3.School of ScienceShanghai UniversityShanghaiChina