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Experimental and computational investigation of the nasa low-speed centrifugal compressor flow field
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Wood, Jerry R. Hathaway, Michael D. Chriss, Randall M. Strazisar, Anthony J. |
| Copyright Year | 1993 |
| Description | An experimental and computational investigation of the NASA Lewis Research Center's low-speed centrifugal compressor (LSCC) flow field was conducted using laser anemometry and Dawes' three-dimensional viscous code. The experimental configuration consisted of a backswept impeller followed by a vaneless diffuser. Measurements of the three-dimensional velocity field were acquired at several measurement planes through the compressor. The measurements describe both the throughflow and secondary velocity field along each measurement plane. In several cases the measurements provide details of the flow within the blade boundary layers. Insight into the complex flow physics within centrifugal compressors is provided by the computational fluid dynamics analysis (CFD), and assessment of the CFD predictions is provided by comparison with the measurements. Five-hole probe and hot-wire surveys at the inlet and exit to the impeller as well as surface flow visualization along the impeller blade surfaces provided independent confirmation of the laser measurement technique. The results clearly document the development of the throughflow velocity wake that is characteristic of unshrouded centrifugal compressors. |
| File Size | 11934198 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940012913 |
| Archival Resource Key | ark:/13960/t6b32sh4h |
| Language | English |
| Publisher Date | 1993-09-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Vaneless Diffusers Computational Fluid Dynamics Low Speed Three Dimensional Motion Velocity Distribution Laser Anemometers Centrifugal Compressors Rotor Blades Turbomachinery Impellers Flow Distribution Wakes Flow Visualization Boundary Layers Viscous Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
