Numerical investigation of JaVA-induced flow in quiescent water

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Abstract

A Jet and Vortex Actuator (JaVA) is an oscillatory, zeronet- mass flux active flow control device which has been investigated numerically in quiescent water. JaVA consists of a vertically moving actuating plate and ejects jets or vortices into the quiescent fluid. Main JaVA-induced flow regimes include jets to different orientations and vortex mode. In this paper, we investigate the effect of the wide gap on the flow characteristics. Three cases consisting of two jets and one vortex mode are presented in detail where the jet-Reynolds number and the scaled amplitude are kept constant. Computational results have been reported to depict instantaneous fields and reveal temporal behavior of JaVAinduced flows in quiescent fluid. In addition, the phaseaveraged flow fields have been obtained for suction and blowing phases. The velocity profiles extracted from phaseaveraged flow fields across the wide gap supply further insight into the JaVA-induced flow regime and their effectiveness in flow control.

Original languageEnglish
Title of host publicationFluids Engineering Systems and Technologies
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Print)9780791856321
DOIs
Publication statusPublished - 2013
EventASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013 - San Diego, CA, United States
Duration: 15 Nov 201321 Nov 2013

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume7 B

Conference

ConferenceASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013
Country/TerritoryUnited States
CitySan Diego, CA
Period15/11/1321/11/13

Keywords

  • Active flow control
  • CFD Simulation
  • Jet and Vortex Actuator (JaVA)

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