Experimental Investigation into the Effects of Riblets on Compressor Cascade Performance

Author

James A. Rothenflue

Date of Award

12-1991

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Aeronautics and Astronautics

First Advisor

William C. Elrod, PhD

Abstract

The effects of adding riblets to the blades of a subsonic, linear compressor cascade were investigated at the Air Force Institute of Technology. Three blade configurations were tested, including a set of unmodified NACA 64- A905 series blades, a set with riblets applied to the suction surface, and a set with riblets on the pressure surface. Performance was evaluated over a wide range of Reynolds numbers, and at low and high free stream turbulence levels. Cascade performance was evaluated in terms of total pressure loss coefficient, turning angle, and static pressure rise. No riblet configuration offered robust cascade performance improvements; however, performance was significantly enhanced under certain specific conditions. Riblets also degraded cascade performance at other conditions.

AFIT Designator

AFIT-GAE-ENY-91D-5

DTIC Accession Number

ADA243881

Comments

The author's Vita page is omitted.

Recommended Citation

Rothenflue, James A., "Experimental Investigation into the Effects of Riblets on Compressor Cascade Performance" (1991). Theses and Dissertations. 7483.
https://scholar.afit.edu/etd/7483