Theoretical and Experimental Dynamic Stall Investigations on a Rotor Blade Tip,
Abstract
Theoretical and experimental investigations have been carried out on oscillating blade tips at moderate and high steady mean incidences and oscillation amplitudes. Some selected data of these tests are compared with a previously developed prediction method based on potential theory to investigate the main effects of viscosity in different domains of dynamic stall. A simple correction procedure is described to take into account the main effects of viscosity on the unsteady airloads. To get a more detailed insight into the beginning of unsteady separation on oscillating profiles a finite-difference procedure has been developed to calculate the unsteady boundary-layer equations. This method has been applied to the oscillating flat plate problem as a first step. The applications to problems of more practical interest like profiles under pitching motion is straightforward. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1982
- Accession Number
- ADP001950
Entities
People
- W. Geissler