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Article

Temporally Resolved Two-Dimensional Spectroscopic Study on the Effect of Highly Preheated and Low Oxygen Concentration Air on Combustion

[+] Author and Article Information
K. Kitagawa

Research Center for Advanced Energy Conversion, Nagoya University, Furo-cho, Cikusa-ku, Nagoya 464-8603, Japane-mail: kuni@apchem.nagoya-u.ac.up

N. Konishi

Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8063, Japan

N. Arai

Research Center for Advanced Energy Conversion, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan

A. K. Gupta

The Combustion Laboratory, Department of Mechanical Engineering, University of Maryland, College Park, MD 20742e-mail: akgupta@eng.umd.edu

J. Eng. Gas Turbines Power 125(1), 326-331 (Dec 27, 2002) (6 pages) doi:10.1115/1.1520155 History: Received August 01, 2001; Revised May 01, 2002; Online December 27, 2002
Copyright © 2003 by ASME
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References

Figures

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Spectra of C2 emission bands
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Experimental apparatus for temperature calibration
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Relationship between the ratio of C2 intensities and temperature measured with a thermocouple
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A schematic diagram of the optical system used to obtain the two-dimensional temperature profiles
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A schematic diagram of the experimental apparatus, including the air preheat system for normal and diluted low oxygen concentration air, and the burner head
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Flame photographs obtained for three different conditions of air
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Time-resolved temperature profiles with normal oxygen concentration air at 300 K, corresponding to condition (1)
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Time-resolved temperature profiles with diluted air (4% O2 in air) at 300 K, corresponding to condition (2)
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Time-resolved temperature profiles with diluted air (4% O2 in air) at 900 K, corresponding to condition (3)
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Temperature profiles averaged over five flames for the three different flames
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Profiles of flame temperature fluctuations for the three different flames

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