Viscous Flows in the Impeller Pump
Flows in the impeller pump are typical among engineering fluid flows. In this chapter, we select a low-specific-speed centrifugal pump as an example to demonstrate research methods commonly used in this aspect. This pump is equipped with long and short blades. Both the pump performance and inner flow characteristics at various flow rates are studied. The design of the pump impeller is optimized, which is expected to be validated through the proof extracted from the flow field. Unsteady numerical simulation is conducted to disclose inner flow patterns associated with the modified design. Meanwhile, an assessment of the hydraulic forces exerted on the pump components is implemented based on numerical results.
- 1.Huang J, Geng S, Wu R, Nie C, Zhang H. Comparison of noise characteristics in centrifugal pumps with different types of impellers. Acta Acust. 2010;35(2):113–118.Google Scholar
- 7.Petit O, Nilsson H. Numerical investigations of unsteady flow in a centrifugal pump with a vaned diffuser. Int J Rotating Mach. 2013.Google Scholar
- 8.P Dupont, G Caignaert, G Bois, T Schneider, Rotor-stator interactions in a vaned diffuser radial flow pump. In: Proceedings of ASME fluids engineering division summer meeting; 2005. p. 1087–1094.Google Scholar
- 9.Feng J, Benra F-K, Dohmen HJ. Numerical study on impeller-diffuser interactions with radial gap variation. In: Proceedings of 4th WSEAS international conference on fluid mechanics and aerodynamics, Elounda, Greece; 2006. p. 289–294.Google Scholar
- 10.Anderson HH. Prediction of head, quantity and efficiency in pumps—the area ratio principle. In: The 22nd annual fluids engineering conference, the American society of mechanical engineers, New Orleans, LA, Mar 9–13; 1980.Google Scholar
- 12.Ozturk A, Aydin K, Sahin B, Pinarbasi A. Effect of impeller-diffuser radial gap ratio in a centrifugal pump. J Sci Ind Res. 2009;68:203–213.Google Scholar