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1 Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka

1 2008

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Influence of a volute casing on the flow in chambers behind the front and back shroud in the single-stage centrifugal pump

Najdecki S, Papierski A

Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka

2008

nr 133

255--262

The results of measurements of the pressure distribution and numerical computations of flows in chambers behind the front and back shroud of the single-stage centrifugal pump with a volute casing are presented. It has been shown how a non-uniform pressure distribution at the impeller exit can influence the flow in chambers behind the front and back shroud. It has been proven that the nature of this flow can influence significantly the magnitude of forces and bending moments on the shaft and the leakage flow through the impeller seal and, consequently, it affects the conditions of an inflow to the impeller.