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Unsteady flow phenomena in industrial centrifugal compressor stage
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Terrinoni, L. Tesei, A. Bonciani, L. |
| Copyright Year | 1982 |
| Description | The results of an experimental investigation on a typical centrifugal compressor stage running on an atmospheric pressure test rig are shown. Unsteady flow was invariably observed at low flow well before surge. In order to determine the influence of the statoric components, the same impeller was repeatedly tested with the same vaneless diffuser, but varying return channel geometry. Experimental results show the strong effect exerted by the return channel, both on onset and on the behavior of unsteady flow. Observed phenomena have been found to confirm well the observed dynamic behavior of full load tested machines when gas density is high enough to cause appreciable mechanical vibrations. Therefore, testing of single stages at atmospheric pressure may provide a fairly accurate prediction of this kind of aerodynamic excitation. |
| File Size | 713550 |
| Page Count | 21 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19830007380 |
| Archival Resource Key | ark:/13960/t2v45jn2g |
| Language | English |
| Publisher Date | 1982-12-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Test Facilities Centrifugal Compressors Atmospheric Pressure Impellers Stators Flow Characteristics Aerodynamics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
