Aeroacoustics control of a turbulent mach 1.3 jet using adjoint-based optimization

Jeonglae Kim, Daniel J. Bodony, Jonathan B. Freund

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

5 Scopus citations

Abstract

Past work has shown that adjoint-based optimization can identify perturbations that make unsteady free shear flows substantially quieter. These perturbations are interesting because they offer the opportunity to study noise mechanisms and because they themselves constitute successful noise-reducing controls. Here we apply these techniques to an exper- imentally validated simulation of a Mach 1.3 pressure-matched turbulent jet. The noise is successfully suppressed. Changes in both the turbulence and acoustic fields are analyzed, including with a proper orthogonal decomposition. The principal effect of the control is the suppression of particularly loud intermittent events. Despite the significant reduction, only small changes in the jet structure are observed.

Original languageEnglish (US)
Title of host publication17th AIAA/CEAS Aeroacoustics Conference 2011 (32nd AIAA Aeroacoustics Conference)
StatePublished - Dec 1 2011
Externally publishedYes
Event17th AIAA/CEAS Aeroacoustics Conference 2011 (32nd AIAA Aeroacoustics Conference) - Portland, OR, United States
Duration: Jun 5 2011Jun 8 2011

Publication series

Name17th AIAA/CEAS Aeroacoustics Conference 2011 (32nd AIAA Aeroacoustics Conference)

Other

Other17th AIAA/CEAS Aeroacoustics Conference 2011 (32nd AIAA Aeroacoustics Conference)
CountryUnited States
CityPortland, OR
Period6/5/116/8/11

ASJC Scopus subject areas

  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics

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