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TECHNICAL PAPERS

Numerical Simulation of the Dynamic Effects Due to Impeller-Volute Interaction in a Centrifugal Pump

[+] Author and Article Information
José González, Joaquı́n Fernández, Eduardo Blanco, Carlos Santolaria

Universidad de Oviedo, Área de Mecánica de Fluidos, Campus de Viesques, 33271 Gijón, Asturias, Spaine-mail: aviados@correo.uniovi.es

J. Fluids Eng 124(2), 348-355 (May 28, 2002) (8 pages) doi:10.1115/1.1457452 History: Received July 01, 2001; Revised September 12, 2001; Online May 28, 2002
Copyright © 2002 by ASME
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References

Figures

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Detail of the impeller mesh. (Only half of the mesh points are made visible.)
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Static pressure contours (Pa) at nominal flow rate
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Helicity at various angular points around the volute in m/s2 . (From volute tongue, each 90° in the rotating sense.)
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Comparison of the performance curves. (Nondimensional head and efficiency.)
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Pressure taps and angular reference around the volute for unsteady measurements
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Flow pattern at the blade passing frequency for two different flow rates (0.2 QN and QN) as function of the circumferential position (φ)
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Sketch of the pump unstructured mesh. (Inlet and outlet pipe portions are added.)
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Pressure fluctuations in the volute wall in a angular position opposite to the tongue at a radius R=107 mm
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Unsteady pressure distributions around the impeller. (Numerical results for the nominal flow rate.)
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Comparison of the pressure fluctuations at the blade passing frequency for Q=0.5 QN. Tongue at φ=0 deg.
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Comparison of the pressure fluctuations at the blade passing frequency for Q=0.7 QN. Tongue at φ=0 deg.
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Comparison of the pressure fluctuations at the blade passing frequency for Q=QN. Tongue at φ=0 deg.
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Comparison of the pressure fluctuations at the blade passing frequency for Q=1.3 QN. Tongue at φ=0 deg.
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Comparison of the pressure fluctuations at the blade passing frequency for Q=1.5QN. Tongue at φ=0 deg.
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Numerical calculation of the total force on the impeller for a blade passing period and Q=1.3 QN.
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Polar representation of the fluctuating force (numerical result), Q=1.3 QN. Force at the blade passing frequency.

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