Analysis of the number and angle of the impeller blade to the performance of centrifugal pump

Keywords: pump performance, centrifugal pump, impeller, number of blades, blade angle, simulation, experiment


The paper discusses the performance of the pump in relation to the impeller. The impeller section is determined by the number and angle of the blades. Therefore, the purpose of this study was to analyze the role of the number and angle of impeller blades on the performance (discharge and discharge pressure) of centrifugal pumps based on experiments and simulations.

The method used is experiment and simulation. Using a centrifugal pump type GWP 20/4 SW, Maximum Output: 6.5 HP/3500 rpm, Inlet/Outlet: 2 Inch, Dimensions: 475x375x370 mm. Experiments and simulations by varying the number of blades 2, 4, and 6 with a blade tilt angle of 130°, 150°, and 160°. For flow simulation using solid works program.

The results show that pump performance is related to discharge pressure, impeller with 2-blades and an angle of 130° the pressure increases 0.45–2.45 bar, for 150° increases 0.14–2.96 bar, and 160° increases 0.29–3.07 bars. For a 4-blade impeller and an angle of 130°, the pressure increases by 0.48–3.12 bar, for 150° it increases by 0.39–3.39 bar, and for 160° it increases by 0.36–3.48 bar. While the impeller for 6-blades with an angle of 130° the pressure increases from 0.6 bar to 3.72 bar, for 150° increases from 1.36 to 4.34 bar, and 160° increases by 0.36–4.74 bar. While it related pump performance to flow rate, increasing the number of blades causes a decrease in flow rate. The highest flow rate is in a 2-blade impeller with a blade angle of 130° is 404.91 l/s. The lowest flow rate is on a 6-blade impeller with an angle of 160° is 279.66 l/s


Download data is not yet available.

Author Biographies

Sugeng Hadi Susilo, State Polytechnic of Malang

Department of Mechanical Engineering

Agus Setiawan, State Polytechnic of Malang

Department of Mechanical Engineering


Aw-Hassan, A., Rida, F., Telleria, R., Bruggeman, A. (2014). The impact of food and agricultural policies on groundwater use in Syria. Journal of Hydrology, 513, 204–215. doi:

Hanafizadeh, P., Ghorbani, B. (2012). Review study on airlift pumping systems. Multiphase Science and Technology, 24 (4), 323–362. doi:

Improving Pumping System Performance (2006). Department of Energy, 117. Available at:

Singh, V. R., Zinzuwadia, M. J., Sheth, S., Desai, R. J. (2017). “Parametric Study and Design Optimization of Centrifugal Pump Impeller. Kalpa Publications in Engineering, 1, 507–515. doi:

Asomani, S. N., Yuan, J., Wang, L., Appiah, D., Zhang, F. (2020). Geometrical effects on performance and inner flow characteristics of a pump-as-turbine: A review. Advances in Mechanical Engineering, 12 (4), 168781402091214. doi:

Sanda, B., Daniela, C. V. (2016). The influence of the inlet angle over the radial impeller geometry design approach with ansys. Journal of Engineering Studies and Research, 18 (4). doi:

Subroto, Effendy, M. (2019). Optimization of centrifugal pump performance with various blade number. Exploring Resources, Process and Design for Sustainable Urban Development: Proceedings of the 5th International Conference on Engineering, Technology, and Industrial Application (ICETIA) 2018. doi:

Kim, J. H., Oh, K. T., Pyun, K. B., Kim, C. K., Choi, Y. S., Yoon, J. Y. (2012). Design optimization of a centrifugal pump impeller and volute using computational fluid dynamics. IOP Conference Series: Earth and Environmental Science, 15 (3), 032025. doi:

Frosina, E., Buono, D., Senatore, A. (2017). A Performance Prediction Method for Pumps as Turbines (PAT) Using a Computational Fluid Dynamics (CFD) Modeling Approach. Energies, 10 (1), 103. doi:

Li, W., Jiang, X., Pang, Q., Zhou, L., Wang, W. (2016). Numerical simulation and performance analysis of a four-stage centrifugal pump. Advances in Mechanical Engineering, 8 (10), 168781401667375. doi:

Si, Q., Bois, G., Liao, M., Zhang, H., Cui, Q., Yuan, S. (2019). A Comparative Study on Centrifugal Pump Designs and Two-Phase Flow Characteristic under Inlet Gas Entrainment Conditions. Energies, 13 (1), 65. doi:

👁 59
⬇ 40
How to Cite
Susilo, S. H., & Setiawan, A. (2021). Analysis of the number and angle of the impeller blade to the performance of centrifugal pump. EUREKA: Physics and Engineering, (5), 62-68.