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    題名: Qualitative Analysis of a Synthetic Jet Actuator with Different Cavity Thickness and Export Area
    作者: Yeh, Yung-Lan;Tang, Jing-Min;Hsu, Shi-Shiung
    關鍵詞: Qualitative analysis;Flow visualization;Synthetic jet actuator;Cross flow
    日期: 2015-10-15
    上傳時間: 2016-12-17 02:10:44 (UTC+8)
    出版者: 中華民國航空太空學會
    摘要: Present study investigates performance of synthetic jet actuator qualitatively. Its effectiveness of thickness of cavity, export area, working frequency and input voltage will be mainly studied by improved smoke flow visualization. The resonance frequency is also checked by the Helmholtz Resonance method and to well know interaction between the most effectiveness working frequency and cavity thickness. Experimental results indicated that higher input voltage makes higher smoke flow deflection angle and show the most obvious variation occurs at 200-400 Hz. Results also show the most efficiency working frequency is closed to resonance frequency of 400 Hz. The jet-to-wind velocity ratio of cross flow shows the same explanation. The ratio is inverse proportion to inflection level and proportion to penetration depth and turbulence intensity. Synthetic jet actuator with property cavity volume can cause higher exit velocity and increase velocity ratio R. It will increase penetration depth and cause higher turbulent intensity. Finally, the effect is more obvious and influence area is much larger.
    關聯: Journal of Aeronautics,Astronautics and Aviation 47(3), pp.269-274
    DOI: 10.6125/15-0409-848
    顯示於類別:[航空太空工程學系暨研究所] 期刊論文

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