High-Reynolds number backward-facing step flow control

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

3 Citations (Scopus)

Abstract

The flow over a backward facing step is investigated at Reynolds numbers higher than that previously reported for both the natural response and with imposed periodic forcing emanating from the step top corner. Surface pressure measurements and surface flow visualisation were used to characterise the flow. It was found that no significant change to the reattachment length occurred over the range 1.18 × 105 < ReH < 4.72 × 105. With imposed actuation, up to a 16% base pressure increase was observed with a corresponding 3% increase in reattachment length. For high forcing frequencies a reduction in base pressure near the top step corner, close to the actuator, was observed.

Original languageEnglish
Title of host publication22nd Australasian Fluid Mechanics Conference, AFMC 2020
EditorsHubert Chanson, Richard Brown
PublisherAustralasian Fluid Mechanics Society
ISBN (Electronic)9781742723419
DOIs
Publication statusPublished - 2020
EventAustralasian Fluid Mechanics Conference 2020 - Brisbane, Australia
Duration: 7 Dec 202010 Dec 2020
Conference number: 22nd
https://afmc2020.org

Conference

ConferenceAustralasian Fluid Mechanics Conference 2020
Abbreviated titleAFMC 2020
Country/TerritoryAustralia
CityBrisbane
Period7/12/2010/12/20
Internet address

Keywords

  • flow control
  • Wakes

Cite this