Large-eddy simulation of passively-controlled transonic cavity flow

Pierre Comte, F. Daude, I. Mary

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

Abstract

A 30 dB reduction of the peak pressure tone and a reduction by 6 dB of the background pressure found in an experiment of high-subsonic cavity flow controlled by a spanwise rod is retrieved numerically. The injection of deterministic upstream fluctuations in the LES domain is found to be of crucial importance, in contrast with the baseflow case. Reduction of the vortex impingement onto the aft edge of the cavity is confirmed, together with reduction of mass flow rate breathing through the grazing plane. Visual evidence of merging between the Kelvin-Helmholtz-type vortices shed downstream of the fore edge of the cavity and the von Kármán vortices shed behind the cylinder is provided. Shocklets downstream of the cylinder are also observed.

Original languageEnglish
Title of host publicationIUTAM Symposium on Unsteady Separated Flows and their Control - Proceedings of the IUTAM Symposium "Unsteady Separated Flows and their Control"
Pages517-527
Number of pages11
DOIs
Publication statusPublished - 1 Dec 2009
Externally publishedYes
EventIUTAM Symposium on Unsteady Separated Flows and their Control - Corfu, Greece
Duration: 18 Jun 200722 Jun 2007

Publication series

NameSolid Mechanics and its Applications
Volume14
ISSN (Print)1875-3507

Conference

ConferenceIUTAM Symposium on Unsteady Separated Flows and their Control
Country/TerritoryGreece
CityCorfu
Period18/06/0722/06/07

Keywords

  • LES
  • Rossiter modes
  • Transonic cavity flow

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