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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

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Kreith,  F., Taylor,  J. H., and Chong,  J. P., 1959, “Heat and Mass Transfer From a Rotating Disk,” ASME J. Heat Transfer, 81, pp. 95–105.
Dorfman, L. A., 1963, Hydrodynamic Resistance and the Heat Loss of Rotating Solids, Oliver and Boyd, Edinburgh and London.
Bunker,  R. S., Metzger,  D. E., and Wittig,  S., 1992, “Local Heat Transfer in Turbine Disk Cavities. Part I: Rotor and Stator Cooling With Hub Injection of Coolant,” ASME J. Turbomach., 114, pp. 211–220.
Bunker,  R. S., Metzger,  D. E., and Wittig,  S., 1992, “Local Heat Transfer in Turbine Disk Cavities. Part II: Rotor Cooling With Radial Injection of Coolant,” ASME J. Turbomach., 114, pp. 221–228.
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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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