Adjoint-based control of free shear flow noise

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

Abstract

Adjoint-based optimal control methods are used to study the mechanics of jet noise. One objective is to establish the upper limit for noise control effectiveness given a set of physical contraints. A second objective is to generate noisey and quieted versions of the same flow which can then be compared to identify the mechanisms leading to noise reduction. The talk will discuss in detail results for a two-dimensional mixing layer, which was studied as a model for the near-nozzle region of a jet. It is shown that a substantial noise reduction is possible despite the fact that the flow itself is barely changed by the control.

Original languageEnglish (US)
Title of host publication33rd AIAA Fluid Dynamics Conference and Exhibit
StatePublished - Dec 1 2003
Event33rd AIAA Fluid Dynamics Conference and Exhibit 2003 - Orlando, FL, United States
Duration: Jun 23 2003Jun 26 2003

Publication series

Name33rd AIAA Fluid Dynamics Conference and Exhibit

Other

Other33rd AIAA Fluid Dynamics Conference and Exhibit 2003
CountryUnited States
CityOrlando, FL
Period6/23/036/26/03

ASJC Scopus subject areas

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

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