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2 International Journal of Applied Mechanics and Engineering

2 2014

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Static and dynamics of a pump impeller with a balancing device. Part II: dynamic analysis

Martsinkovsky V. A., Zhulyov A., Kundera C.

International Journal of Applied Mechanics and Engineering

2014

Vol. 19, no. 3

621--631

This paper presents the theoretical study of the system comprising an impeller and a balancing device. It deals with the dynamic analysis of the system, i.e., the axial vibrations of the impeller, and the system stability. The dynamic analysis took into account linearized hydrodynamic forces and moments generated in the longitudinal clearances of the seals of the impeller. The theoretical analysis was supplemented with a numerical example with characteristics determined for a real single-stage centrifugal pump.

Static and dynamic analysis of a pump impeller with a balancing device. Part I: static analysis

Kundera C., Martsinkovsky V. A.

International Journal of Applied Mechanics and Engineering

2014

Vol. 19, no. 3

609--619

This part of the work presents the design and static analysis of an impeller for a single-stage pump. The impeller is directly connected with a balancing device. The impeller needs to have a properly designed system of longitudinal and lateral clearances on both sides. With the simplifying assumptions concerning the flow and distribution of pressure in the longitudinal and lateral clearances, the static analysis involved deriving relationships between the impeller geometry and the basic performance parameters of the pump. A numerical example was used to show the calculation procedure of static characteristics for the predetermined parameters.