Mixing and Noise in High Speed Axisymmetric Jets

Abstract

This work investigated noise sources and the effects of passive mixing and noise control schemes using vortex generating tabs on noise sources. It is believed that such information is necessary for jet noise modeling and provides guidance for active control of jets for noise mitigation that will follow. The bulk of this work attempts to correlate instantaneous large-amplitude features of the far acoustic field to the dynamic evolution and interaction of large-scale structures within the mixing-layer of ideally expanded, high-speed, high Reynolds number jets. Such information is essential for a better understanding of jet noise sources, and jet aeroacoustic modeling and control.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2003
Accession Number
ADA422153

Entities

People

  • E. Caraballo
  • J. Hileman
  • M. Samimy

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Fields
  • Acoustic Measurement
  • Acoustic Propagation
  • Acoustic Properties
  • Acoustics
  • Boundary Layer
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Mechanics
  • Measurement
  • Mechanical Engineering
  • Mechanics
  • Physics Laboratories
  • Reynolds Number
  • Three Dimensional
  • Turbulent Mixing
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Fluid Mechanics and Fluid Dynamics.
  • Robotics and Automation.