Behavior of free surface vortices in cylindrical vessel under fluctuating flow rate

Monji, Hideaki*; Akimoto, Toshinori*; Miwa, Daisuke*; Kamide, Hideki

In this study, the unsteady flow structure of the free surface vortex was investigated under periodical flow fluctuating conditions in a cylindrical vessel. The gas core length of the free surface vortex and the velocity field in the vessel were measured by image processing. The experimental results showed that the gas core length under the fluctuating flow condition was shorter than that in the steady state having the same flow rate as the maximum rate of the fluctuating flow when the period of the flow fluctuation was short.

Language	:	English
Journal	:	Proceedings of 11th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-11) (CD-ROM)
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Pages	:	10 Pages
Publication Year/Month	:	2005/09
Meeting title	:	11th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-11)
Held date	:	2005/10
Location (city)	:	Avignon
Location (country)	:	France
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Keywords	:	no keyword
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Registration No. : 09-2005-0332
JAEA Abstracts No. :
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