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TECHNICAL PAPERS

Spatially Resolved Temperature Measurements in a Liquid Using Laser Induced Phosphorescence

[+] Author and Article Information
S. L. Thomson, D. Maynes

Department of Mechanical Engineering, Brigham Young University, 435 CTB, Provo, UT 84602

J. Fluids Eng 123(2), 293-302 (Feb 08, 2001) (10 pages) doi:10.1115/1.1365960 History: Received February 09, 2000; Revised February 08, 2001
Copyright © 2001 by ASME
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References

Figures

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Temperature measurement setup for calibration curve development
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Phosphorescence of excited lines at increasing temperature
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Effect of smoothing on phosphorescent line profiles
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Average intensity vs. location for six temperatures
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Variation of intensity with bath temperature at x≈2.85 cm for an initial temperature of 23°C, eight different initial intensities, cases of CycOH and NpOH as the OH bond alcohol, and similar equipment settings
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Variation of intensity with bath temperature at x≈2.85 cm for four different initial temperatures, eight different initial intensities, cases of BuOH, CycOH, and NpOH as the OH bond alcohol, and different equipment settings
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(a) Normalized intensity versus normalized temperature for 16 different cases. (b) Normalized intensity versus normalized temperature at x≈2.85 cm for eight cases with the initial temperature at 23°C and similar equipment settings.
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Fluctuations in intensity signal at x≈2.85 cm versus temperature for Ne1-Ne5
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Uncertainties in uS,uF, and uI versus temperature at x≈2.85 for the Ne1 data set
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Total error in determining temperature for Ne1-Ne5
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Ratio of temperature range to averaged error for 16 data sets
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Side view of flow apparatus used in demonstrating MTT under dynamic conditions
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MTT lines for cold inner flow (left) and hot inner flow (right)
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Measured and predicted temperature profiles for cold inner flow (a) and hot inner flow (b)
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Measured and predicted velocity profiles for cold inner flow (a) and hot inner flow (b)

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