Abstract
Numerical simulations on impeller-volute interactions in a low specific speed centrifugal pump equipped with variable tongue profiles were carried out using the commercial code CFX-10. The numerical results indicated that the influence of the different tongue profiles on the performance and operation stability of the centrifugal pump is very remarkable. The high-efficiency range of the centrifugal pump can be widened to some extent while the profile of the tongue is replaced from sharp tongue to middle tongue, and the maximum efficiency point is shifted along the higher flow rate direction. The operation stability of the centrifugal pump may be influenced while the fluid flows in the diffuser of the centrifugal pump with short tongue. The amplitude of pressure fluctuation in the tongue zone drops notably while the pump equipping with the middle tongue or the short one is in running.
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© 2009 Tsinghua University Press, Beijing and Springer-Verlag GmbH Berlin Heidelberg
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Guo, P., Luo, X., Lu, J., Zheng, X. (2009). Numerical Investigation on Impeller-Volute Interaction In a Low Specific Speed Centrifugal Pump with Tongue Profile Variation. In: Xu, J., Wu, Y., Zhang, Y., Zhang, J. (eds) Fluid Machinery and Fluid Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-89749-1_48
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DOI: https://doi.org/10.1007/978-3-540-89749-1_48
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-89748-4
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