Masters Theses

Date of Award

8-1990

Degree Type

Thesis

Degree Name

Master of Science

Major

Aerospace Engineering

Major Professor

Ahmad D. Vakili

Committee Members

Roger Crawford, Jayne Wu

Abstract

The research performed in this thesis concentrated on the design and analysis of a fluidic oscillator for the provision of a continuously pulsed output. Wall attachment theory was used as the basis for design specifications. A plexiglas model was constructed and tested in the University of Tennessee Space Institute water tunnel. Qualitative appreciation of the flow characteristics was gained using dye injection as a method of flow visualization. A second model was machined out of aluminum for testing with air. Quantitative measurements of the flow parameters were obtained with various instrumentation while a qualitative assessment of the flow was performed using surface oil flow visualization technique. The overall results indicate that fluidic oscillators may be used as a source of unsteady flow. This study confirmed that frequency of oscillation is a linear function of supply flow rate for water and air under non-choked nozzle conditions. The design tested in this study did, however, demonstrate unacceptable total pressure losses. Further research into different design configurations is recommended.

Download
Files over 3MB may be slow to open. For best results, right-click and select "save as..."

Share

COinS