The thermodynamic effect on cryogenic cavitating flow characteristics of pressurized liquid nitrogen in a horizontal rectangular nozzle is precisely investigated by numerical analysis based on an unsteady thermal nonequilibrium two-fluid model and by flow visualization measurement. According to the numerical and experimental study, the sufficiently useful results are proposed to realize the further development and high performance of a type of cryogenic two-phase cooling system. It is numerically and experimentally found that the inception of cryogenic cavitation occurs and the cavity grows in the vicinity of the wall surface of the inlet throat section. It is also found that the continuous process and behavior of cavitation inception, cloud cavity growth, and gas phase diffusion behavior with time in pressurized liquid nitrogen are dominated not only by several additional forces in the gas-phase momentum equation, but also by the thermodynamic effect that acts on the cavitation bubbles due to the inherent properties of cryogenic fluid. Especially under conditions of the same temperature and same aspect ratio of the cloud cavity, similar generating behavior of cavitation can be often found in the high Reynolds number region in spite of large cavitation number.
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November 2005
Research Papers
Numerical and Experimental Study on the Cavitating Flow Characteristics of Pressurized Liquid Nitrogen in a Horizontal Rectangular Nozzle
Jun Ishimoto,
Jun Ishimoto
Institute of Fluid Science,
e-mail: ishimotojun@ieee.org
Tohoku University
, 2-1-1, Katahira, Aoba-ku Sendai 980-8577, Japan
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Masahiro Onishi,
Masahiro Onishi
Fuji Heavy Industries Ltd.
, 1-1, Subaru-cho, Ohta, Gunma 373-8555, Japan
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Kenjiro Kamijo
Kenjiro Kamijo
Kakuda Propulsion Office,
The Japan Aerospace Exploration Agency (JAXA)
, 1, Koukuzo, Jinjiro, Kakuda, Miyagi 981-1526, Japan
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Jun Ishimoto
Institute of Fluid Science,
Tohoku University
, 2-1-1, Katahira, Aoba-ku Sendai 980-8577, Japane-mail: ishimotojun@ieee.org
Masahiro Onishi
Fuji Heavy Industries Ltd.
, 1-1, Subaru-cho, Ohta, Gunma 373-8555, Japan
Kenjiro Kamijo
Kakuda Propulsion Office,
The Japan Aerospace Exploration Agency (JAXA)
, 1, Koukuzo, Jinjiro, Kakuda, Miyagi 981-1526, JapanJ. Pressure Vessel Technol. Nov 2005, 127(4): 515-524 (10 pages)
Published Online: December 16, 2004
Article history
Received:
March 25, 2004
Revised:
December 16, 2004
Citation
Ishimoto, J., Onishi, M., and Kamijo, K. (December 16, 2004). "Numerical and Experimental Study on the Cavitating Flow Characteristics of Pressurized Liquid Nitrogen in a Horizontal Rectangular Nozzle." ASME. J. Pressure Vessel Technol. November 2005; 127(4): 515–524. https://doi.org/10.1115/1.1928916
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