On the pressure losses due to the tip clearance of centrifugal blowers

M. Ishida, Y. Senoo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The pressure distribution along the shroud is measured for three types of centrifugal impeller at seven different values of tip clearance each. The change of input power due to a change of tip clearance is related to the effective blockage at the impeller tip. Since the change of input power is little for the test cases, the variation of local pressure gradient along the shroud is mostly attributed to the change of local pressure loss. The local pressure loss is related to the local tip clearance ratio and to the local pressure gradient based on the decleration of relative velocity in the impeller. Since the local pressure gradient is largest near the throat of impeller is used as the representative value. The tip clearance loss is related to the clearance ratio and the pressure rise based on the deceleration of relative velocity in the impeller. A good correlation is observed in all cases at various flow rate.

Original languageEnglish
Title of host publicationGeneral
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791879665
DOIs
Publication statusPublished - 1980
Externally publishedYes
EventASME 1980 International Gas Turbine Conference and Products Show, GT 1980 - New Orleans, United States
Duration: Mar 10 1980Mar 13 1980

Publication series

NameProceedings of the ASME Turbo Expo
Volume1B-1980

Conference

ConferenceASME 1980 International Gas Turbine Conference and Products Show, GT 1980
Country/TerritoryUnited States
CityNew Orleans
Period3/10/803/13/80

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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