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Browsing by Author "Terry D. Scharton, Committee Member"

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    Computational Investigation of High Speed Pulsejets
    (2009-10-14) Zheng, Fei; Tiegang Fang, Committee Member; Terry D. Scharton, Committee Member; Andrey V. Kuznetsov, Committee Co-Chair; William L. Roberts, Committee Chair; Renzo Shamey, Committee Member
    Pulsejet may be the simplest propulsion system ever. Due to its simplicity, the pulsejet may be an ideal low-cost micro-propulsion system. Although a considerable amount of work has been done on developing different types of pulsejets, understanding of the operation of these jets is still very limited. One goal of this investigation is to study the valveless pulsejet, find out effect of the geometry of inlet, combustion chamber and tailpipe on the performance of valveless pulsejet. Another goal is to study effect of the environment, such as free stream speed, ambient pressure and temperature, on the performance of pulsejet. In this work, combined computational and experimental methods were used to study valved and valveless pulsejets to develop an understanding of how various inlets, exhaust sizes and coming flow speed effect the overall performance of the jet. Focus is put on the computational study. Fluid mechanics, acoustics and combustion were studied numerically to understand the operation of pulsejets and their interactive with the environment. The research objectives include the principles of valveless pulsejet design, optimize valveless pulsejet geometries and the effect of ejector and shroud.

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