In this paper, the CFD simulation and flow unsteadiness analysis for a centrifugal pump with volute were carried out in whole flow passage including impeller, volute and side chamber. The periodic flow unsteadiness based on URANS equations has been quantitatively investigated in detail by defining unsteady velocity intensity, and turbulence intensity under design condition was also studied. Meanwhile, three-dimensional effect has been considered for the twisted blade channels. The time-averaged unsteady velocity intensity and time-averaged turbulence intensity were calculated by averaging the results of each grid node for entire impeller revolution period to evaluate the strength distributions of flow unsteadiness directly and comprehensively. The accumulative results of an impeller revolution can directly show the positions and strength of the flow unsteadiness and turbulence intensity in both rotor and stator domains which can be an important aspect to be considered in the centrifugal pump optimum design procedure for obtaining more stable inner flow of the pump and cutting down certain components of flow-induced vibration and noise.
- Fluids Engineering Division
Numerical Investigation on Periodic Flow Unsteadiness in a Centrifugal Pump With Volute
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Pei, J, Yuan, S, Li, X, Yuan, J, & Wang, W. "Numerical Investigation on Periodic Flow Unsteadiness in a Centrifugal Pump With Volute." Proceedings of the ASME 2013 Fluids Engineering Division Summer Meeting. Volume 1B, Symposia: Fluid Machinery; Fluid Power; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in Aerospace; Flow Manipulation and Active Control: Theory, Experiments and Implementation; Fundamental Issues and Perspectives in Fluid Mechanics. Incline Village, Nevada, USA. July 7–11, 2013. V01BT10A003. ASME. https://doi.org/10.1115/FEDSM2013-16041
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