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contributor authorKengo Kikuta
contributor authorKatsuji Nagaura
contributor authorKatsuhide Ohira
contributor authorYoshiki Yoshida
contributor authorMitsuo Watanabe
contributor authorTomoyuki Hashimoto
date accessioned2017-05-09T00:28:17Z
date available2017-05-09T00:28:17Z
date copyrightNovember, 2008
date issued2008
identifier issn0098-2202
identifier otherJFEGA4-27345#111302_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/138140
description abstractBased on the length of the tip cavitation as an indication of cavitation, we focused on the effect of thermodynamics on cavitation performances and cavitation instabilities in an inducer. Comparison of the tip cavity length in liquid nitrogen (76K and 80K) as working fluid with that in cold water (296K) allowed us to estimate the strength of the thermodynamic effect on the cavitations. The degree of thermodynamic effect was found to increase with an increase of the cavity length, particularly when the cavity length extended over the throat of the blade passage. In addition, cavitation instabilities occurred both in liquid nitrogen and in cold water when the cavity length increased. Subsynchronous rotating cavitation appeared both in liquid nitrogen and in cold water. In the experiment using liquid nitrogen, the temperature difference between 76K and 80K affected the range in which the subsynchronous rotating cavitation occurred. In contrast, deep cavitation surge appeared only in cold water at lower cavitation numbers. From these experimental results, it was concluded that when the cavity length extends over the throat, the thermodynamic effect also affects the cavitation instabilities as a “thermal damping” through the unsteady cavitation characteristics.
publisherThe American Society of Mechanical Engineers (ASME)
titleThermodynamic Effect on Cavitation Performances and Cavitation Instabilities in an Inducer
typeJournal Paper
journal volume130
journal issue11
journal titleJournal of Fluids Engineering
identifier doi10.1115/1.2969426
journal fristpage111302
identifier eissn1528-901X
keywordsCavitation
keywordsCavities
keywordsNitrogen
keywordsWater AND Temperature
treeJournal of Fluids Engineering:;2008:;volume( 130 ):;issue: 011
contenttypeFulltext


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