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The Effects of Variable-Inlet Guide Vanes on Performance of an Axial Flow Pump With Tip Clearance

[+] Author Affiliations
Wei-Min Feng, Jing-Ye Pan, Zhi-Wei Guo, Qian Cheng

Wuhan University, Wuhan, China

Paper No. AJKFluids2015-33499, pp. V001T33A017; 6 pages
doi:10.1115/AJKFluids2015-33499
From:
  • ASME/JSME/KSME 2015 Joint Fluids Engineering Conference
  • Volume 1: Symposia
  • Seoul, South Korea, July 26–31, 2015
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5721-2
  • Copyright © 2015 by ASME

abstract

The effects of variable-inlet guide vanes on the performance of an axial flow pump considering tip clearance are investigated. The performance and the main flow field of the whole passage with five different angles of inlet guide vanes ( −10°, −5°, 0°, 5°, 10°) and with two tip clearance sizes (1‰ and 2‰) are presented. The results show that when the angle of inlet guide vane increases from negative values to positive values, the pump head reduces for two tip clearance sizes. This is mainly caused by the change of inlet velocity triangle of blade. Moreover, as tip clearance size increases from 1‰ to 2‰, both the pump head and efficiency decrease because of increasing of the strength of tip clearance leakage vortex and reverse flow.

Copyright © 2015 by ASME

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