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TECHNICAL PAPERS

A Study of Convective Heat Transfer in a Model Rotor–Stator Disk Cavity

[+] Author and Article Information
R. P. Roy, G. Xu, J. Feng

Department of Mechanical and Aerospace Engineering, Arizona State University, Tempe, AZ 85287

J. Turbomach 123(3), 621-632 (Mar 01, 2001) (12 pages) doi:10.1115/1.1371776 History: Received March 01, 2001
Copyright © 2001 by ASME
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References

Figures

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The rotor–stator system
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Radial distribution of Nusselt number for free rotor disk
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Computed streamlines for Reϕ=7.0×105,cw=3008,Rem=5.0×105
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Fluid temperature distribution in the disk cavity for Reϕ=7.0×105,cw=3008,Rem=5.0×105(s=16.5 mm,Tw=45.8°C)
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Effect of rotor disk speed on the cavity fluid temperature distribution for cw=3008,Rem=5.0×105
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Effect of secondary air flow rate on the cavity fluid temperature distribution for Reϕ=7.0×105,Rem=5.0×105
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Measured variation of rotor disk substrate temperature and fluid core temperature with time (t=0 s is the beginning of the rotor disk cool-down) for Reϕ=7.0×105,cw=3008,Rem=5.0×105
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Measured radial profiles of rotor disk substrate temperature and fluid core temperature at one time instant (t=1000 s) for Reϕ=7.0×105,cw=3008,Rem=5.0×105
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Thermal boundary layer outer edge temperature at the time of TLC color transition on the rotor disk surface versus radius for Reϕ=7.0×105,cw=3008,Rem=5.0×105
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Radial distribution of heat flux on the rotor disk surface for Reϕ=7.0×105,cw=3008,Rem=5.0×105
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Convective heat transfer coefficient distribution on the rotor disk surface for Reϕ=7.0×105,cw=3008,Rem=5.0×105
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Effect of rotor disk speed on the convective heat transfer coefficient distribution
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Effect of secondary air flow rate on the convective heat transfer coefficient distribution
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Comparison of selected results of the present work with some earlier works
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Local Nusselt number versus local rotational Reynolds number (experimental data and correlation are for the core region and radially outermost part of the source region)
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Local Nusselt number versus local relative rotational Reynolds number (experimental data and correlation are for the core region and radially outermost part of the source region)

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