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TECHNICAL PAPERS

Correlations of Critical Froude Number for Annular-Rimming Flow in Rotating Heat Pipes

[+] Author and Article Information
J. Baker, T. Oliver

University of Alabama Tuscaloosa, AL 35487-0276

L. Lin

Universal Energy System, Inc., Dayton, OH

R. Ponnapan

AFRL/PRPG, Wright-Patterson AFB, OH 45433-7251

J. Leland

University of Dayton Research Institute, Dayton, OH 45469-0102

J. Fluids Eng 123(4), 909-913 (Jun 05, 2001) (5 pages) doi:10.1115/1.1411967 History: Received July 06, 2000; Revised June 05, 2001
Copyright © 2001 by ASME
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References

Gray, V. H., 1969, “The Rotating Heat Pipe—A Wickless Hollow Shaft for Transferring High Heat Fluxes,” ASME Paper No. 69-HT-19.
Daniels,  T. C., and Al-Jumaily,  F. K., 1975, “Investigations of the Factors Affecting the Performance of A Rotating Heat Pipe,” Int. J. Heat Mass Transf., 18, pp. 961–973.
Faghri,  A., Gogineni,  S., and Thomas,  S., 1993, “Vapor Flow Analysis Of An Axially Rotating Heat Pipe,” Int. J. Heat Mass Transf., 36, No. 9, pp. 2293–2303.
Harley,  C., and Faghri,  A., 1995, “Two-Dimensional Rotating Heat Pipe Analysis,” ASME J. Heat Transfer, 117, pp. 202–208.
Ponnappan, R., He, Q., Baker, J., Myers, J. M., and Leland, J., 1997, “High Speed Rotating Heat Pipe: Analysis and Test Results,” 10th International Heat Pipe Conference, Stuttgart, Germany.
Ponnappan, R., He, Q., and Leland, J. E., 1997, “Test Results of a High Speed Rotating Heat Pipe,” AIAA Paper No. 97-2543.
Ponnappan, R., Leland, J. E., and Beam, J. E., 1996, “Comparison of Performance Results for Water and Methanol Rotating Heat Pipes,” AIAA Paper No. 96-0477.
Ponnappan, R., and Leland, J. E., 1995, “High Speed Rotating Heat Pipe for Aircraft Applications,” SAE 951437, Aerospace Atlantic Conf., Dayton, OH.
Ponnappan, R., Leland, J. E., and Beam, J. E., 1994, “Thermal Management Issues of Rotors in Rotating Electrical Machines,” SAE 942184, Aerotech ’94, Los Angeles, CA.
Ponnappan, R., and Leland, J. E., 1994, “Rotating Heat Pipe for Cooling of Rotors in Advanced Generators,” AIAA Paper No. 94-2033.
Streby, M. A., Ponnappan, R., Leland, J. E., and Beam, J. E., 1996, “Design and Testing of a High Speed Rotating Heat Pipe,” Paper No. 96301, IECEC-96, Washinton, DC.
Ponnappan, R., and Leland, J. E., 1994, “Rotating Heat Pipe for Cooling of Rotors in Advanced Generators,” AIAA Paper No. 94-2033.
Ponnappan, R., Leland, J. E., and Beam, J. E., 1996, “Comparison of Performance Results for Water and Methanol Rotating Heat Pipes,” AIAA Paper No. 96-0477.
Ruschak,  K. J., and Scriven,  L. E., 1976, “Rimming Flow of liquid in a Rotating Horizontal Cylinder,” J. Fluid Mech., 76, Part 1, pp. 113–125.
Lin, L., and Groll, M., 1992, “Critical Conditions for Collapse of Annular Flow in a Rotating Heat Pipe with Cylindrical Wall,” Adv. in Heat Pipe Science & Tech., Proc. 8th Intl. Heat Pipe Conf., pp. 452–456.
Phillips,  O. M., 1960, “Centrifugal Waves,” J. Fluid Mech., 7, pp. 340–352.
Holman, J. P., 1994, Experimental Methods for Engineers, McGraw-Hill, New York, pp. 49–56.

Figures

Grahic Jump Location
A schematic representation of (a) annular flow and (b) rimming flow with Ω2c1
Grahic Jump Location
A schematic diagram of the experimental test cell
Grahic Jump Location
A plot of critical Froude number for onset of annular flow
Grahic Jump Location
A plot of critical Froude number for annular flow throughout cylinder
Grahic Jump Location
A plot of critical Froude number for collapse of annular flow

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