Destabilization of Supersonic Free Shear Layers by Parametric Excitation Using Mach Waves Generated by a Wavy Wall

Abstract

The original objectives of this research project are: 1. To study and classify all the instability wave and acoustic modes of ducted supersonic free shear layers, and 2. To investigate the possibility of mixing enhancements by means of a periodic Mach wave system generated by wavy walls of the channel enclosure. Some highlights of our findings are: Instability and acoustic wave modes of ducted supersonic shear layers; and Mixing enhancement by parametric excitation using periodic Mach waves.

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Document Details

Document Type
Technical Report
Publication Date
Feb 28, 1990
Accession Number
ADA219655

Entities

People

  • Christopher Tam

Organizations

  • Florida State University

Tags

DTIC Thesaurus Topics

  • Acoustic Reflection
  • Acoustic Waves
  • Crystal Lattice Vibrations
  • Excitation
  • Fluid Dynamics
  • Fluid Mechanics
  • Frequency
  • Instability
  • Mach Number
  • Mathematics
  • Mechanics
  • Military Research
  • Mixing
  • Three Dimensional
  • Turbulent Mixing
  • Waves

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Control Systems Engineering.
  • Wave Propagation and Nonlinear Chaotic Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers