NDLI: Measurements of Tip Vortex Characteristics and the Effect of an Anti-Cavitation Lip on a Model Kaplan Turbine Blade

Content Provider	Springer Nature Link
Author	Roussopoulos, Kimon Monkewitz, Peter A.
Copyright Year	2000
Abstract	Motivated by the problem of cavitation erosion, the position and strength of the roll-up vortex on the suction side of a Kaplan-type turbine blade with various endings is investigated. Measurements are made on different models with simplified two-dimensional geometries using mainly particle image velocimetry. It is found that the greatest danger of cavitation erosion exists when the casing of the turbine is of the “semi-spherical” type, so that there is a large and closing clearance gap at the leading edge of the blade. Furthermore, the anti-cavitation lip used in this study is shown to be ineffective at increasing the distance of the vortex from the blade, although it does reduce the circulation of the vortex and presumably the danger of cavitation. Our measurements are found to be in good agreement with existing models for the position of the vortex when appropriately interpreted.
Starting Page	119
Ending Page	144
Page Count	26
File Format	PDF
ISSN	13866184
Journal	Flow, Turbulence and Combustion
Volume Number	64
Issue Number	2
e-ISSN	15731987
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2000-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mechanics Automotive and Aerospace Engineering, Traffic
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Physical and Theoretical Chemistry Chemical Engineering

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Measurements of Tip Vortex Characteristics and the Effect of an Anti-Cavitation Lip on a Model Kaplan Turbine Blade