Open AccessNumerical investigation of the effect of leakage flow on cavitation in centrifugal pump
Author(s) -
Yashwant Moganaradjou,
Anindita Apurbaa Phukan,
S. Vengadesan,
Dhiman Chatterjee
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1909/1/012016
Subject(s) - volute , impeller , centrifugal pump , leakage (economics) , cavitation , mechanics , numerical analysis , mechanical engineering , computer simulation , materials science , engineering , physics , mathematics , mathematical analysis , economics , macroeconomics
Numerical studies on pumps emphasize mainly on modelling the interactions between the impeller and the volute to obtain an accurate understanding of the physics involved. However, the importance of modelling leakage paths, which is known to have a significant influence on the flow structure in the pump, necessitates an in-depth analysis. This activity is undertaken in this paper by investigating a specific case of a centrifugal pump. Numerical studies have been conducted on the pump modelled with and without leakages for the design condition. The sliding mesh method is used to obtain single phase pressure pulsations data at some important locations in the volute and the leakage path, and transient Multiple Reference Frame (MRF) modelling is utilized to conduct the cavitation analysis. It is observed that for the case under study, the pressure pulsations pattern and the cavitation behaviour varies significantly due to the inclusion of leakage paths in the analysis.