The effects of system rotation on separation, reattachment and performance in two-dimensional diffusers
Abstract
The report covers experimental studies of the effects of system rotation on flow in, and performance of two-dimensional diffusers of two types: (1) straight walled diffusers with smooth fairing at the inlet duct, and (2) sudden expansion, step walled diffusers. Flow regime maps and static pressure recoveries are obtained for type 1. For type 2 the basic turbulence phenomena in the free-shear layer downstream of the step are studied and data on reattachment to the downstream wall are obtained. The important stabilizing, and destabilizing effects of rotation are emphasized.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- May 1975
- Bibcode:
- 1975STIN...7617357R
- Keywords:
-
- Centrifugal Compressors;
- Coriolis Effect;
- Performance Prediction;
- Boundary Layer Separation;
- Compressor Blades;
- Flow Distribution;
- Two Dimensional Flow;
- Fluid Mechanics and Heat Transfer