Observations of Propagating Stall in a Centrifugal Fan.
Abstract
An experimental investigation has been performed to determine the type of instabilities that are encountered in a centrifugal fan operating against a varying backpressure. In the experimental study, the fan discharge was directed into a flow measuring pipe at the end of which was a rotary valve used to excite the system. Pressure and velocity measurements were taken in the fan volute at several locations. Instabilities detected include rotating stall having one cell and two cell configurations with spontaneous changes between the two configurations. Overall fan performance was not found to be significantly affected by the occurrence of rotating stall.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1981
- Accession Number
- ADA117361
Entities
People
- Alan N. Jennings
- David D. Moran
- David W Taylor