Akademik Veri Yönetim Sistemi
Journal Of Fluids Engineering-Transactions Of The Asme, cilt.141, 2019 (SCI-Expanded)
The aim of the current study is to investigate the effect of inlet blade angles on cavitation
performance in a centrifugal pump. In order to reveal this relationship, both hub and
shroud blade angles are considered and a two-phase three-dimensional computational
fluid dynamics (CFD) study is carried out. Shear stress transport (SST) turbulence and
Rayleigh–Plesset cavitation models are used in simulations. Inlet blade angles for both
hub and shroud are changed and pump performance (head-discharge) and cavitation
(head-inlet pressure) graphs are obtained for eight different designs. Afterward, numerical
cavitation tests are conducted, required net positive suction head values of the each
design are calculated, and variations are demonstrated. Results show that hub and
shroud blade angle variations have no significant effect on the pump characteristic
curves excluding for shroud blade angle at high discharge values. However, cavitation
performance of the pump is excessively affected for both hub and shroud blade angle
alterations. Increasing hub blade angle has slightly negative effect on cavitation performance
of the pump. On the other hand, while increasing shroud blade angle from 20 deg to
30 deg have positive effect on cavitation performance, it is negatively affected from
30 deg to 50 deg. [DOI: 10.1115/1.4040557]