Fluid structure interaction dynamic analysis of a mixed-flow waterjet pump

In order to avoid resonance of a mixed-flow waterjet pump at run time and calculate the stress and deformation of the pump rotor in the flow field, a one-way fluid structure interaction method was applied to simulate the pump rotor using ANSYS CFX and ANSYS Workbench software. The natural frequencie...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2013-01, Vol.52 (7), p.72013-7
Main Authors: Pan, X W, Pan, Z Y, Huang, D, Shen, Z H
Format: Article
Language:English
Subjects:
Blade tips
CAD
Computer aided design
Computer aided engineering
Deformation
Flow rate
Flow velocity
Fluid flow
Fluid-structure interaction
Hydraulic jets
Impellers
Prestressing
Pumps
Resonance
Resonant frequencies
Resonant frequency
Rotors
Stresses
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Summary:In order to avoid resonance of a mixed-flow waterjet pump at run time and calculate the stress and deformation of the pump rotor in the flow field, a one-way fluid structure interaction method was applied to simulate the pump rotor using ANSYS CFX and ANSYS Workbench software. The natural frequencies and mode shapes of the pump rotor in the air and in the flow field were analyzed, and the stress and deformation of the impeller were obtained at different flow rates. The obtained numerical results indicated that the mode shapes were similar both in the air and in the flow field, but the pump rotor's natural frequency in the flow field was slightly smaller than that in the air; the difference of the pump rotor's natural frequency varied lightly at different flow rates, and all frequencies at different flow rates were higher than the safe frequency, the pump rotor under the effect of prestress rate did not occur resonance; The maximum stress was on the blade near the hub and the maximum deformation on the blade tip at different flow rates.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/52/7/072013