Experimental study on influences of kinematic viscosity on occurrences of cavitation due to sub-surface vortex

Ezure, Toshiki ; Kimura, Nobuyuki; Kobayashi, Jun ; Kamide, Hideki

In order to clarify the influence of kinematic viscosity () on the occurrence of vortex cavitation, a water experiment was carried out in a cylindrical tank with a suction pipe. The occurrences of vortex cavitation were measured under several fluid temperature conditions between 10 $^{circ}$ C and 80 $^{circ}$ C ( : 1.310 $^{-6}$ to 3.710 $^{-6}$ m $^{2}$ /s). The velocity fields around vortex were also measured by Particle Image Velocimetry. The influence of was observed under relatively high conditions. However, that influence diminished with the decrease of or the increase of suction velocity. And also, normalized circulation $^{*}$ was found as an index to estimate such influences of or suction velocity on the vortex cavitation.

Language	:	English
Journal	:	Proceedings of 14th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-14) (CD-ROM)
Volume	:
Number	:
Pages	:	13 Pages
Publication Year/Month	:	2011/09
Meeting title	:	14th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-14)
Held date	:	2011/09
Location (city)	:	Toronto
Location (country)	:	Canada
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Keywords	:	no keyword
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Registration No. : BB20110919
JAEA Abstracts No. : 39001602
Paper Submission No. : 9898

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