Convergence acceleration by varying time stepsize using Bi-CGSTAB method for turbulent flow computation

W. B. Tsai, Wen-Wei Lin, C. C. Chieng*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A design of varying step size concept both in time span and spatial coordinate systems to achieve fast convergence is demonstrated in this study. A method based on the concept of minimization of residuals by the Bi-CGSTAB algorithm is extended to determine the time step size so that the convergence can be enforced. The numerical results show that the time stepsize determined by the proposed method improves the convergence rate for turbulent computations using advanced turbulence models in low-Reynolds number forms, and the degree of improvement increases with the degree of complexity of the turbulence models.

Original languageEnglish
Title of host publicationEuropean Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000
StatePublished - 1 Dec 2000
EventEuropean Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000 - Barcelona, Spain
Duration: 11 Sep 200014 Sep 2000

Publication series

NameEuropean Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000

Conference

ConferenceEuropean Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000
CountrySpain
CityBarcelona
Period11/09/0014/09/00

Keywords

  • Bi-CGSTAB method
  • Convergence acceleration
  • Varying time stepsize

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