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TECHNICAL PAPERS

An Experimental Investigation of Thermal Effects in a Cavitating Inducer

[+] Author and Article Information
Jean-Pierre Franc

LEGI, Grenoble, FranceJean-Pierre.Franc@hmg.inpg.fr

Claude Rebattet

CREMHYG, Grenoble, FranceClaude.Rebattet@hmg.inpg.fr

Alain Coulon

SNECMA, Vernon, Francealain.coulon@snecma.fr

J. Fluids Eng 126(5), 716-723 (Dec 07, 2004) (8 pages) doi:10.1115/1.1792278 History: Received December 15, 2003; Revised May 12, 2004; Online December 07, 2004
Copyright © 2004 by ASME
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References

Stahl, H. A., Stepanoff, A. J., and Phillipsburg, N. J., 1956, “Thermodynamic Aspects of Cavitation in Centrifugal Pumps,” ASME J. Basic Eng., 1691–1693.
Stepanoff, A. J., 1964, “Cavitation Properties of Liquids,” J. Eng. Power, 195–200.
Holl, J. W., Billet, M. L., and Weir, D. S., 1975, “Thermodynamic Effects on Developed Cavitation,” J. Fluids Eng., 507–514.
Kato, H., 1984, “Thermodynamic Effect on Incipient and Developed Sheet Cavitation,” International Symposium on Cavitation Inception, FED-Vol. 16, New Orleans, LA, 9–14 December, pp. 127–136.
Fruman,  D. H., Reboud,  J. L., and Stutz,  B., 1999, “Estimation of Thermal Effects in Cavitation of Thermosensible Liquids,” Int. J. Heat Mass Transfer, 42, 3195–3204.
Fruman, D. H., Benmansour, I., and Sery, R., 1991, “Estimation of the Thermal Effects on Cavitation of Cryogenic Liquids,” Cavitation and Multiphase Flow Forum, ASME FED, 109 , 93–96.
Brennen, C. E., 1995, Cavitation and Bubble Dynamics, Oxford University Press, New York.
Hord, J., “Cavitation in Liquid Cryogens,” NASA Report Nos. CR-2054, CR-2156 (1972), CR-2242 (1973), CR-2448 (1974).
Billet, M. L., 1970, “Thermodynamic Effects on Developed Cavitation in Water and Freon 113,” Master of Science thesis, The Pennsylvania State University, March 1970.
Franc, J. P., Janson, E., Morel, P., Rebattet, C., and Riondet, M., 2001, “Visualizations of Leading Edge Cavitation in an Inducer at Different Temperatures,” Fourth International Symposium on Cavitation, Pasadena, CA, 20–23 June.
Tsujimoto, Y., 2001, “Simple Rules for Cavitation Instabilities in Turbomachinery,” Fourth International Symposium on Cavitation, Pasadena, CA, 20–23 June.
Billet,  M. L., Holl,  J. W., and Weir,  D. S., 1981, “Correlations of Thermodynamic Effects for Developed Cavitation,” J. Fluids Eng., 103, 534–542.
Kamono, H., Kato, H., Yamaguchi, H., and Miyanaga, M., 1993, “Simulation of Cavity Flow by Ventilated Cavitation on a Foil Section,” Cavitation and Multiphase Flow, FED-Vol. 153, ASME, pp. 183–189.
Holman, J. P., 1997, Heat Transfer, McGraw-Hill, New York.
Brennen, C. E., 1994, Hydrodynamics of Pumps, Concepts ETI Inc. and Oxford University Press, New York.
Tani, N., and Nagashima, T., 2002, “Numerical Analysis of Cryogenic Cavitating Flow on Hydrofoil—Comparison Between Water and Cryogenic Fluids,” 4th Int. Conf. on Launcher Technology, 3–6 December, Liege (Belgium).

Figures

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Typical two-phase cavity
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Typical full vapor cavity
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View of the pump together with the inlet pipe. The flow is from right to left. The front window allows the observation of cavitation on the blades.
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Typical signal given by the optical probe. The lower level (0 V) corresponds to the liquid whereas the higher level (5 V) corresponds to the vapor. The void fraction is estimated from the ratio of the cumulative “vapor time” above a given threshold to the total acquisition time.
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Visualizations of the leading edge cavity for different values of the cavitation parameter up to two-phase breeding. Operating conditions: nominal flow rate, 4000 rpm, R114 at 20°C.
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Typical example of (a) efficiency of the inducer (b) map of pressure fluctuations spectra and (c) cavity length as a function of the cavitation parameter (right-hand side) or indicative void fraction (left-hand side). Operating conditions: nominal flow rate, 4000 rpm, R114 at 20°C.
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Effect of the temperature on the development of cavitation at a nearly constant cavitation number S. Operating conditions: nominal flow rate, 5000 rpm, R114.
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Variation of the cavity length with the cavitation parameter for cold water and for R114 at two different temperatures
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Estimated temperature depression as a function of the cavity length for the inducer working in R114 at different operating conditions and nominal flow rate
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B-factor of Stepanoff as a function of the cavity length for the inducer working in R114 at different operating conditions and nominal flow rate
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Evolution of the flow rate coefficient with the cavity length for a foil named EN foil (data adapted from Kamono et al. 13). The flow rate coefficient was made nondimensional using the foil thickness.

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