Journal of Fluid Science and Technology
Online ISSN : 1880-5558
ISSN-L : 1880-5558
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Cavitation Instability in Subcooled Liquid Nitrogen Nozzle Flows
Kazuki NIIYAMAMasakazu NOZAWAKatsuhide OHIRAMamoru OIKE
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2008 Volume 3 Issue 4 Pages 500-511

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Abstract

Subcooled cryogenic fluids are used in many fields such as a propellant for liquid propulsion rocket systems and a coolant for superconducting systems. However, the fundamental characteristics of subcooled cryogenic cavitating flows have not been clarified. Therefore, a visualization experiment for a cryogenic cavitating flow passing through a converging-diverging nozzle was carried out with liquid nitrogen in the subcooled condition. The results indicate that the cavitation instability is caused by the intersection of the speed of sound in a gas-liquid two-phase flow with the required velocity for cavitation inception and cavitation conservation.

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© 2008 by The Japan Society of Mechanical Engineers
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