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[期刊论文]

Parallel in time algorithm with spectral-subdomain enhancement for volterra integral equations

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author:

Li, X. (Li, X..) [1] | Tang, T. (Tang, T..) [2] | Xu, C. (Xu, C..) [3]

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Scopus

Abstract:

This paper proposes a parallel in time (also called time parareal) method to solve Volterra integral equations of the second kind. The parallel in time approach follows the spirit of the domain decomposition that consists of breaking the domain of computation into subdomains and solving iteratively the subproblems in a parallel way. To obtain a high order of accuracy, a spectral collocation accuracy enhancement in subdomains will be employed. Our main contributions in this work are twofold: (i) A time parareal method is designed for the integral equations, which to our knowledge is the first of its kind. The new method is an iterative process combining a coarse prediction in the whole domain with fine corrections in subdomains by using spectral approximation, leading to an algorithm of very high accuracy. (ii) A rigorous convergence analysis of the overall method is provided. The numerical experiment confirms that the overall computational cost is considerably reduced while the desired spectral rate of convergence can be obtained. © 2013 Society for Industrial and Applied Mathematics.

Keyword:

Spectral collocation; Time parareal; Volterra integral equations

Community:

  • [ 1 ] [Li, X.]College of Mathematics and Computer Science, Fuzhou University, Fuzhou, 350108, China
  • [ 2 ] [Tang, T.]Department of Mathematics and Institute for Computational and Theoretical Studies, Hong Kong Baptist University, Kowloon Tong, Hong Kong
  • [ 3 ] [Xu, C.]School of Mathematical Sciences, Xiamen University, 361005 Xiamen, China

Reprint 's Address:

  • [Xu, C.]School of Mathematical Sciences, Xiamen University, 361005 Xiamen, China

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Source :

SIAM Journal on Numerical Analysis

ISSN: 0036-1429

Year: 2013

Issue: 3

Volume: 51

Page: 1735-1756

1 . 6 9

JCR@2013

2 . 8 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

30 Days PV: 0

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