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Performance improvement of mixed-flow centrifugal pumps with new impeller shrouds: Numerical and experimental investigations
, Article Renewable Energy ; Volume 163 , 2021 , Pages 635-648 ; 09601481 (ISSN) ; Khalesi, J ; Jafari, M ; Gazori, H. O ; Sharif University of Technology
Elsevier Ltd
2021
Abstract
A new impeller configuration with innovatively-designed shrouds is introduced, and its impact on the pressure head and efficiency of the semi-open centrifugal pump is explored using experimental and numerical approaches. The proposed design includes attaching specific plates called bladelets to a semi-open impeller to limit the secondary flows over the blades resulting in an increase in the pump head and efficiency. Hydraulic performance of a centrifugal pump with three different bladelets at angles of 30°, 60°, and 90° is investigated experimentally, and the results are compared to semi-open and closed impellers. The values of pressure head and efficiency of the proposed centrifugal pump...