Localized Flow Control With Energy Deposition

Abstract

A series of experiments with energy deposition via laser-induced optical breakdown of air, i.e., a laser spark, have been performed. These experiments have demonstrated the possibility of using a laser spark for supersonic flow control. A focused Nd:YAG laser (pulse time of 10 nanoseconds, pulse frequency of 10 Hz, and capable of energy levels up to 600 milli-Joules per pulse) was used to create the energy deposition laser spark. This laser energy deposition was then tested in quiescent air, upstream of a Mach 3.45 sphere with and without shock impingement, into shock structures within the dual solution domain, and into a compressible shear layer.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2002
Accession Number
ADA411007

Entities

People

  • Russel G. Adelgren

Organizations

  • Rutgers University–New Brunswick

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Heat Transfer
  • Hydrodynamics
  • Hypervelocity Flow
  • Measurement
  • Mechanical Phenomena
  • Mechanical Properties
  • Physics Laboratories
  • Pressure Distribution
  • Pressure Measurement
  • Test And Evaluation
  • Three Dimensional
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Hypersonics
  • Hypersonics - Hypersonic Flow