Abstract
This paper deals with the numerical study of the axial and radial forces, the stresses, the strains, and the vibrations induced by a liquid flow through a high pressure multistage centrifugal pump. This is to improve its performances account for the material of the shaft and the impellers. Indeed, a model of a 4-stage centrifugal pump is developed from a design point. The continuity and Navier-Stokes equations are used for the liquid flow through the pump. Furthermore, the equations of stresses, strains and vibrations are applied for the shaft and the impellers. The obtained system of equations is solved by means of ANSYS including the CFX, the static structural analysis and the harmonic response to determinate the fields of velocity and pressure, the axial and radial forces, the stress, the strain, and the amplitudes and the frequencies of vibrations on the pump shaft. In addition, numerical simulations are accomplished to analyze the shaft behavior in terms of the axial and radial forces, the stresses, the strains and the vibrations induced by liquid flow. The outlet blade height, the flow rate, the number of the stages, the diffuser return vanes and the diffuser in the last pump stage are used as parameters for these simulations. Good trends are achieved comparing the obtained results with these found in the literature and these calculated using the classical equations of stresses and strains.
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Acknowledgments
The authors are grateful to the Technosub Inc., Industrial pumps manufacturing and distribution (Rouyn-Noranda, Quebec, Canada).
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Abdelouahab, MA., Ngoma, G.D., Erchiqui, F., Kabeya, P. (2022). Investigation of Induced Loads, Stresses, Strains and Vibrations in a High Pressure Multistage Centrifugal Pump. In: Obaidat, M.S., Oren, T., Rango, F.D. (eds) Simulation and Modeling Methodologies, Technologies and Applications. SIMULTECH 2020. Lecture Notes in Networks and Systems, vol 306. Springer, Cham. https://doi.org/10.1007/978-3-030-84811-8_9
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