Computation of vortex lock-in in the laminar wake of a circular cylinder using unsteady monopole sources

Dartzi Pan, Yu Chi Chin, Chih Hao Chang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The vortex lock-in in the laminar wake behind a circular cylinder induced by the unsteady monopole source is numerically simulated in this paper. The artificial compressibility method is employed to solve the incompressible Navier-Stokes equations. A high-order accurate upwind flux-difference finite-volume scheme is used to dis-cretize the flow field. The unsteady monopole source is simulated by a pulsating volume flux through the cylinder surface at a prescribed forcing frequency and amplitude. The forcing amplitude is set to a fixed value while the frequency is varied to search for the lock-in region. The flow field of the periodic lock-in state is examined in detail. Finally, the effects of a higher amplitude and a different source location are briefly investigated.

Original languageEnglish
Pages (from-to)227-233
Number of pages7
JournalJournal of Fluids Engineering, Transactions of the ASME
Volume117
Issue number2
DOIs
Publication statusPublished - 1995 Jan 1

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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