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Investigation of Using Broadband Excitation and Detection in Evaluating Flowfield Temperatures and Pressures

  • John Mendoza
  • Ivan Catton
Part of the Heat and Mass Transfer book series (HMT)

Abstract

A nonintrusive method to measure temperature and pressure utilizing cxbroadband excitation and detection of oxygen fluorescence is presented. The required finely-tuned laser excitation source is replaced by a more rugged and less bulky Xenon flashlamp. As a tradeoff, more lines are excited and hence more fluorescence lines need to be monitored. Using a numerical fluorescence model, temperature and pressure sensitive bins of varying sizes (5,10,15,20 nm) between 200 and 300 nm are determined. By scaling the bin values with a relatively pressure insensitive bin, a pressure insensitivity parameter was found that allowed the determination of the 5 nm bin centered about 222.5 nm to be the most temperature sensitive for the temperature range 200-1500 K.

Keywords

Fluorescence Photon Xenon Flashlamp Lorentzian Lineshape Broadband Excitation Laser Excitation Source 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • John Mendoza
    • 1
  • Ivan Catton
    • 1
  1. 1.Mechanical and Aerospace Engineering DepartmentUniversity of CaliforniaLos AngelesUSA

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