Temperature Measurement in High-Temperature Gases Using Krypton Fluoride Laser-Induced Oxygen Fluorescence.

Details Temperature Measurement in High-Temperature Gases Using Krypton Fluoride Laser-Induced Oxygen Fluorescence. Temperature Measurement in High-Temperature Gases Using Krypton Fluoride Laser-Induced Oxygen Fluorescence.

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phdt.........5g&link_type=abstract

Thesis (PH.D.)--UNIVERSITY OF VIRGINIA, 1995.Source: Dissertation Abstracts International, Volume: 56-04, Section: B, page: 210

Computer Science

Scientific paper

The objective of this research has been to investigate the use of KrF laser-induced O_2 fluorescence for temperature measurement in high-temperature reacting and nonreacting gases. The research has included both theoretical and experimental analyses. The absorption and subsequent emission spectra of the 0-6, 1-6, and 2 -7 bands in the B^3Sigma_sp {u}--X^3Sigma_sp {g}- Schumann-Runge system of O_2 that overlap the 248.0-248.9nm tuning range of the KrF laser were analyzed. A numerical simulation of the O_2 LIF process was developed to assess the temperature sensitivity, accuracy, and application range of temperature measurement strategies. Measurements of O_2 LIF were obtained in an atmospheric air furnace at temperatures between 1250 and 1800 K. Excitation and emission spectra and variations of the fluorescence signal with temperature were recorded and compared to theoretical predictions. The primary source of uncertainty in the fluorescence measurements was photon shot noise. Ground state depletion of v^{'' }(6) and v^{' '}(7) was observed following excitation of transitions in the 0-6 and 2-7 bands, respectively. Rotational temperature of O_2 was measured in the atmospheric air furnace. For nonsimultaneous, 5-pulse average fluorescence measurements, average temperature measurement errors of 10.7% and 5.1% over a temperature range of 1325-1725 K were observed using two- and four -line excitation techniques, respectively. A new single -pulse, two-line laser-induced O_2 fluorescence temperature measurement technique was demonstrated. The fluorescence spectrum obtained with multi-channel detection following simultaneous excitation of two coincident transitions in the 0-6 and 2-7 bands was used to determine the gas temperature. Photon shot noise was found to be the primary source of uncertainty for these measurements in a quiescent environment. Single-pulse temperature measurement uncertainties in atmospheric air ranged from approximately 13% at 1300 K to 7% at 1800 K. For the average of 100 single-pulse measurements, the r.m.s. measurement error was 1.3% over a temperature range of 1300-1800 K. Planar laser-induced fluorescence images were acquired in an atmospheric propane -O_2 jet flame. Mean and fluctuating pointwise temperature measurements were obtained in the flame.

Affiliated with

Also associated with

No associations

Rating

Temperature Measurement in High-Temperature Gases Using Krypton Fluoride Laser-Induced Oxygen Fluorescence. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Temperature Measurement in High-Temperature Gases Using Krypton Fluoride Laser-Induced Oxygen Fluorescence., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature Measurement in High-Temperature Gases Using Krypton Fluoride Laser-Induced Oxygen Fluorescence. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-837146