An investigation of the effects of upstream mass injection on cavity oscillations

Author

Robert Calvin Wolfe

Date of Award

5-1995

Degree Type

Thesis

Degree Name

Master of Science

Major

Mechanical Engineering

Major Professor

Ahmad D. Vakili

Committee Members

Frank G. Collins, Ching-Fang Lo

Abstract

The experimental effort attempted to determine the effect mass injection had on the amplitude of cavity pressure oscillations using varying amounts of injection and different injection patterns. The boundary layer was also traversed by a cone probe at several locations to determine the effect of mass injection on the boundary layer profiles. Finally, a computational simulation of the experimental setup was conducted. Results have shown that a more uniform injection with a higher blowing parameter produced the greatest reduction in the cavity pressure oscillations. The probe traverse measurements were successful except directly behind the injection surface. The computational simulation has shown shear layer movement but a spectrum analysis of the static pressures in the cavity indicated only random fluctuations.

Recommended Citation

Wolfe, Robert Calvin, "An investigation of the effects of upstream mass injection on cavity oscillations. " Master's Thesis, University of Tennessee, 1995.
https://trace.tennessee.edu/utk_gradthes/11313