Laser Diagnostic Imaging of Energetically Enhanced Flames Using Direct Microwave Plasma Coupling

Abstract

Quantitative images of temperature and hydroxyl (OH) concentrations are presented in plasma-enhanced flames where a nonthermal microwave plasma discharge is coupled directly with the reaction zone of the flame. The plasma jet is generated through a novel microwave (2.45 GHz) waveguide based a coaxial reactor system. Planar laser-induced fluorescence is used to generate the OH fields, and planar Rayleigh scattering thermometry is used for the temperature. Plasma-enhanced flames present new possibilities for ignition and flame holding under harsh operating conditions, including stabilization of combustion in hypersonic flame conditions.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2011
Accession Number
ADA561040

Entities

People

  • Campbell Carter
  • Stephen D Hammack
  • Tonghun Lee
  • Xing Rao

Organizations

  • Michigan State University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Combustion
  • Couplings
  • Diagnostic Imaging
  • Electromagnetic Radiation
  • Electromagnetic Scattering
  • Electronic Mail
  • Energy
  • Energy Conversion
  • Fluorescence
  • Ignition
  • Laser Induced Fluorescence
  • Lasers
  • Microwaves
  • Radiation
  • Rayleigh Scattering
  • Scattering

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Microwave Engineering.
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Directed Energy
  • Hypersonics