Purdue University Graduate School
Hasan_Celebi_Thesis.pdf (22.54 MB)

Transient Response of Tapered and Angled Injectors Subjected to a Passing Detonation Wave

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posted on 2019-08-02, 19:15 authored by Hasan Fatih CelebiHasan Fatih Celebi
A total number of 849 tests were conducted to investigate the transient response of liquid injectors with various geometries including different taper angles, injection angles and orifice lengths. High-speed videos were analyzed to characterize refill times and back-flow distances of nine different injector geometries subjected to a ethylene-oxygen detonation wave. Water was used as the working fluid and experiments were performed at two different vessel pressure settings (60 and 100 psia). Although a minimal difference was found between plain and angled injectors due to having constant orifice diameter geometry, introduction of taper angle resulted in more agile injectors with less sensitivity to ambient and feed pressures. Several attempts were made to normalize refill times and obtain a general trend for transient response of liquid injectors.


Degree Type

  • Master of Science in Aeronautics and Astronautics


  • Aeronautics and Astronautics

Campus location

  • West Lafayette

Advisor/Supervisor/Committee Chair

Stephen D. Heister

Additional Committee Member 2

Carson D. Slabaugh

Additional Committee Member 3

Sally P. Bane