Numerical investigation of forced turbulent wall jets

J. Seidei, H. F. Fasel

Research output: Contribution to conferencePaper

Abstract

The effect of time periodic forcing of turbulent wall jets is investigated numerically using our new Flow Simulation Methodology (FSM). Previous experimental research has shown that periodic excitation of wall jets increases their effectiveness for separation control. To investigate the effect of forcing on the large coherent structures, a steady mean flow is computed first using a Reynolds Averaged Navier-Stokes (RANS) approach. The response of this mean flow to periodic forcing is then investigated using FSM in the limit of unsteady RANS. Our results indicate that with periodic forcing, significant changes in the mean Reynolds shear stress distribution and also the skin friction are observed. The unsteady computational results are scrutinized to investigate how the coherent structures interact with the turbulent mean flow and what role they play in the change of the mean flow profiles.

Original languageEnglish (US)
StatePublished - Dec 1 2000
EventFluids 2000 Conference and Exhibit - Denver, CO, United States
Duration: Jun 19 2000Jun 22 2000

Other

OtherFluids 2000 Conference and Exhibit
CountryUnited States
CityDenver, CO
Period6/19/006/22/00

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Mechanical Engineering

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    Seidei, J., & Fasel, H. F. (2000). Numerical investigation of forced turbulent wall jets. Paper presented at Fluids 2000 Conference and Exhibit, Denver, CO, United States.