Comparative Analysis of Strength and Modal Characteristics of a Full Tubular Pump and an Axial Flow Pump Impellers Based on Fluid-Structure Interaction

Lijian Shi, Jun Zhu, Li Wang, Shiji Chu, Fangping Tang and Yan Jin
Additional contact information
Lijian Shi: College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225000, China
Jun Zhu: College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225000, China
Li Wang: Huai’an Institute of Hydraulic Survey and Design, Ltd., Huai’an 223001, China
Shiji Chu: International Center for Small Hydro Power, Hangzhou 310002, China
Fangping Tang: College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225000, China
Yan Jin: College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225000, China

Energies, 2021, vol. 14, issue 19, 1-18

Abstract: Fluid-structure interaction (FSI) was used to determine the structural mechanical characteristics of full tubular and axial-flow pumps. The results showed that as the flow rate increases, the total deformation and equivalent stress are significantly reduced. The max total deformation (MTD) and the max equivalent stress (MES) of the full tubular pump impeller occur on the outer edge of the blade. There are two stress concentrations in the full tubular pump impeller, one of which is located in the outlet area of the rim, and the other is located in the outlet area of the hub. However, the MES of the axial-flow pump appears in the center of the blade hub. The performance difference between the full tubular pump and the axial-flow pump is mainly caused by the clearance backflow. The natural frequency of the full tubular pump is lower than that of the axial-flow pump on the basis of the modal results. The MES of the full tubular pump is mainly concentrated at the junction of the blade and the motor rotor, and the max thickness of the rim is 6mm, which can be more prone to cracks and seriously affect the safety and stability of the pump.

Keywords: full tubular pump; axial-flow pump; deformation; stress; modal analysis; fluid-structure interaction; numerical simulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/19/6395/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/19/6395/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:19:p:6395-:d:650883

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().