To enhance the efficiency and stable operation, the unsteady pressure fluctuations in a centrifugal pump and the radial force on an impeller are investigated for three different vaned diffuser outlet diameters. The steady-state hydrodynamic performance of the centrifugal pump with three different vaned diffuser outlet diameters was experimentally measured. Numerical simulations were used to obtain the hydrodynamic performance of the experimental centrifugal pump based on the Reynolds-averaged Navier-Stokes (RANS) and turbulence models. The numerical results of the hydrodynamic performance were in agreement with the experimental data. The accuracy of the utilized numerical approach was demonstrated. The unsteady flow characteristics of the centrifugal pump were numerically studied. With increasing diffuser vane outlet diameter, the flow field within the volute became more non-uniform, and the pressure fluctuation was more drastic. Moreover, because of the influence of the non-uniform flow field and the pressure fluctuation, the radial force on the impeller increased.
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ASME 2018 Power Conference collocated with the ASME 2018 12th International Conference on Energy Sustainability and the ASME 2018 Nuclear Forum
June 24–28, 2018
Lake Buena Vista, Florida, USA
Conference Sponsors:
- Power Division
- Advanced Energy Systems Division
- Solar Energy Division
- Nuclear Engineering Division
ISBN:
978-0-7918-5140-1
PROCEEDINGS PAPER
The Influence of Vaned Diffuser Outlet Diameters on Operating Performance of a Single-Stage Centrifugal Pump
Xiangyuan Zhu
,
Xiangyuan Zhu
Xi'an Jiaotong University, Xi'an, China
Search for other works by this author on:
Liping Zhu
,
Liping Zhu
Xi'an Jiaotong University, Xi'an, China
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Guojun Li
Guojun Li
Xi'an Jiaotong University, Xi'an, China
Search for other works by this author on:
Xiangyuan Zhu
Xi'an Jiaotong University, Xi'an, China
Fen Lai
Xi'an Jiaotong University, Xi'an, China
Liping Zhu
Xi'an Jiaotong University, Xi'an, China
Guojun Li
Xi'an Jiaotong University, Xi'an, China
Paper No:
POWER2018-7153, V002T10A002; 10 pages
Published Online:
October 4, 2018
Citation
Zhu, X, Lai, F, Zhu, L, & Li, G. "The Influence of Vaned Diffuser Outlet Diameters on Operating Performance of a Single-Stage Centrifugal Pump." Proceedings of the ASME 2018 Power Conference collocated with the ASME 2018 12th International Conference on Energy Sustainability and the ASME 2018 Nuclear Forum. Volume 2: Heat Exchanger Technologies; Plant Performance; Thermal Hydraulics and Computational Fluid Dynamics; Water Management for Power Systems; Student Competition. Lake Buena Vista, Florida, USA. June 24–28, 2018. V002T10A002. ASME. https://doi.org/10.1115/POWER2018-7153
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