A dual-time method for two-dimensional unsteady incompressible flow calculations

Ann L. Gaitonde*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

49 Citations (Scopus)

Abstract

A method for computing unsteady incompressible viscous flows on moving or deforming meshes is described. It uses a well-established time-marching finite-volume flow solver, developed for steady compressible flows past rigid bodies. Time-marching methods cannot be applied directly to incompressible flows because the governing equations are not hyperbolic. Such methods can be extended to steady incompressible flows using an artificial compressibility scheme. A time-accurate scheme for unsteady incompressible flows is achieved by using an implicit real-time discretization and a dual-time approach, which uses a technique similar to the artificial compressibility scheme. Results are presented for test cases on both fixed and deforming meshes. Experimental, numerical and theoretical data have been included for comparison where available and reasonable agreement has been achieved. © 1998 John Wiley & Sons, Ltd.

Translated title of the contributionA dual-time method for two-dimensional unsteady incompressible flow calculations
Original languageEnglish
Pages (from-to)1153-1166
Number of pages14
JournalInternational Journal for Numerical Methods in Engineering
Volume41
Issue number6
Publication statusPublished - 1 Dec 1998

Bibliographical note

Publisher: John Wiley & Sons Ltd

Keywords

  • Dual-time
  • Incompressible
  • Two-dimensional
  • Unsteady

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