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TECHNICAL PAPERS

Concentration Probe Measurements in a Mach 4 Nonreacting Hydrogen Jet

[+] Author and Article Information
D. R. Buttsworth

Faculty of Engineering and Surveying, University of Southern Queensland, Toowoomba, QLD 4350, Australia

T. V. Jones

Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, UK

J. Fluids Eng 125(4), 628-635 (Aug 27, 2003) (8 pages) doi:10.1115/1.1595671 History: Received July 05, 2001; Revised March 10, 2003; Online August 27, 2003
Copyright © 2003 by ASME
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References

Figures

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Illustration of the probe arrangement
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Sensitivity of heat transfer coefficient to Mach number as indicated by f(M,γ) for γ=1.4
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Sensitivity of heat transfer coefficient to the concentration of the mixture as indicated by f(thermophysical properties) for a hydrogen-air mixture at T0=290 K
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Illustration of the Mach 4 free jet arrangement
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Typical signals obtained during the experiments
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Illustration of heat flux for various probe temperatures at two points across the hydrogen jet for x=300 mm
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Time-averaged stagnation temperature measurements in the hydrogen jet at 4 stations downstream of injection
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Time-averaged heat transfer coefficient results at four stations downstream of injection. Solid lines: thin film probes; dots: Pitot probe predictions.
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Time-averaged hydrogen concentration profiles. Solid line: hydrogen mole fraction; dots: hydrogen mass fraction.
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Stagnation temperature fluctuations at four stations downstream of injection for three different values of T0−Tw
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Stagnation temperature fluctuations in the hydrogen jet at x=300 mm

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