Type of Document Master's Thesis Author Mathes, Andrew R. Author's Email Address email@example.com URN etd-81597-94044 Title Experimental Analysis of an Advanced-Design, Quasi-Radial Diffuser Receiving an Oscillating Jet Degree Master of Science Department Engineering Mechanics Advisory Committee
Advisor Name Title Gürdal, Zafer Hajj, Muhammad R. Telionis, Demetri P. Committee Chair Keywords
Date of Defense 1997-07-01 Availability unrestricted AbstractMethods of experimental analysis of airflow through an advanced-design, quasi-radial
diffuser receiving an oscillating jet induced by a rotating baffle were devised and
performed. The initially unsteady flow was found to lose its unsteadiness as it progressed
through the diffuser and exited into the atmosphere. Within the diffuser, regions of slow
flow in the lee of ventilation holes exist due to entrainment. The addition of a
convergence insert across from these holes increased flow speeds, but also deflected the
flow farther away from the holes, aiding separation. The predominantly steady flow over
a flat plate upon which the exiting flow impinged produced an asymmetric static pressure
profile. This was probably due to the mechanism that set up the oscillations in the flow,
the rotating baffle.
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