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http://dx.doi.org/10.5050/KSNVN.2004.14.1.050

Characteristics of Plane Impinging Jets(1) - Slit-tone -  

권영필 (숭실대학교 기계공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.14, no.1, 2004 , pp. 50-55 More about this Journal
Abstract
In this study, slit-tones by plane impinging jet are investigated experimentally over the whole subsonic flow range, especially at low speeds, in order to obtain the instability behaviour of impinging plane jet. Slit-tones are generated at low speeds associated with laminar shear layer instability as well as at high speeds associated with turbulent instability. Most of low-speed slit-tones are induced by symmetric mode instability unless the slit is not so wide, in which case antisymmetric modes are induced like edge-tones. It is found that the frequencies at low speeds ate controled by the unstable condition of the vortex at the nozzle exit and its pairings by which the frequencies are decreased by half. In the case of symmetric modes related with low-speed slit-tones, frequencies lower than those associated with one-step pairings are not found.
Keywords
Jet; Impinging Jet; Plane Jet; Impinging-tone; Instability; Symmetric; Antisymmetric; Frequency;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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