Open AccessExperimental Investigation and Passive Flow Control of a Cavitating Centrifugal Pump
Author(s) -
Spyridon D. Kyparissis,
Dionissios P. Margaris
Publication year - 2012
Publication title -
international journal of rotating machinery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.265
H-Index - 33
eISSN - 1026-7115
pISSN - 1023-621X
DOI - 10.1155/2012/248082
Subject(s) - impeller , centrifugal pump , cavitation , specific speed , head (geology) , internal flow , mechanics , axial flow pump , materials science , leading edge , flow control (data) , blade (archaeology) , flow (mathematics) , rotodynamic pump , mechanical engineering , progressive cavity pump , hydraulic pump , computer science , physics , engineering , radial piston pump , geology , computer network , reciprocating pump , geomorphology
Passive flow control techniques are used to improve the flow field and efficiency of centrifugal pumps and turbomachines, in general. An important phenomenon that mechanical engineers have to take into account is cavitation. It leads to the decrease of the pump performance and total head. In the present experimental study, a centrifugal pump is investigated in cavitating conditions. A passive flow control is realized using three different blade leading edge angles in order to reduce the cavitation development and enhance the pump performance. The experiments are carried out in a pump test rig specially designed and constructed, along with the impellers. The head drop and total efficiency curves are presented in order to examine the effect of the blade leading edge angle on the cavitation and pump performance. Finally, the vapour distribution along with the blades is illustrated for the tested blade leading edge angles
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