Volume 17, Issue 9 (11-2017)                   Modares Mechanical Engineering 2017, 17(9): 13-24 | Back to browse issues page

‎ 20.1001.1.10275940.1396.17.9.30.6

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Mohammadipour D, Najafi A F, Alemi Arani H, Riasi A. Numerical Analysis on the Effects of Impeller Geometry Parameters for a Centrifugal Pump in Reverse Operation. Modares Mechanical Engineering 2017; 17 (9) :13-24
URL: http://mme.modares.ac.ir/article-15-7828-en.html
Numerical Analysis on the Effects of Impeller Geometry Parameters for a Centrifugal Pump in Reverse Operation
Dariush Mohammadipour1 , Amir Farhad Najafi * 1, Hamed Alemi Arani1 , Alireza Riasi1
1- School of Mechanical Engineering, University of Tehran, Tehran, Iran
Abstract:   (6779 Views)
Recently, use of PAT (pump as turbine) in mini hydro power plants (< 500 Kw) has increased due to its lower cost, easy installation and maintenance feasibility. Since the overall efficiency of this machine is lower than conventional turbines, the use of these machines in large plants are not economically recommended. In this study, the effect of geometrical parameters of impeller on PAT performance is investigated. In the present research, the geometries of components of an available commercial pump was scanned and modeled. To make the study more feasible, Impeller was redesigned in CFturbo software. Commercial software of ANSYS CFX 15.0 was used to simulate the fluid flow within PAT. Numerical results are in good agreement with existing experimental data. Three main parameters, namely, blade number variations, leading edge shapes and splitter blades were comprehensively investigated. Result shows that using 7 blades, rounding leading edge with suction side chamfer and 20% length splitter blades improve the efficiency. Finally, the most appropriate geometry with parameters of 6 blades, rounded trailing edge with suction side chamfer and 20%splitter blades is recommended for achieving the highest efficiency that can boost it up to 2%.
Keywords: Pump as turbine, Impeller Geometry Variations, Efficiency, CFD
Full-Text [PDF 2046 kb]   (7177 Downloads)    
Article Type: Research Article | Subject: Fluids Machines
Received: 2017/04/26 | Accepted: 2017/07/8 | Published: 2017/09/1
Add your comments about this article : Your username or Email:
CAPTCHA
Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.