A Review on Study of Cavitations in Hydroulic Turbine

Abstract

Cavitation is the gas liquid region produced by a localized pressure reduction created by internal force in fluid. a brief description of the general features of cavitation phenomenon is given as well as of the main types of cavitations occurring in hydraulic turbines. The work presented here is focused on the most important ones which are the leading edge cavitation due to its erosive power, the bubble cavitation because it affects the machine performance and the draft tube swirl that limits the operation stability. Cavitation is a phenomenon which manifests itself in the pitting of the metallic surfaces of turbine parts because of the formation of cavities. This paper present on the cavitation phenomenon in hydraulic turbine discussed briefly.
Keyword :- Cavitation; Hydraulic Machine; vibration, Erosion.