OSCILLATING PHENOMENA OF A JET IN A JET-EDGE SYSTEM: (2ND REPORT, MECHANISM OF OSCILLATION).

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Shakouchi, Toshihiko
Ito, Tadaya
Suematsu, Yoshikazu
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A two dimensional jet begins to transverse oscillation when it impinges on a wedge-shaped object. This is well known as the edgetone phenomenon. Nevertheless the real state of affairs of the phenomenon has not yet been clarified completely. In the preceding paper, the authors proposed a theoretical method which can be applied for prediction of the frequency, from a viewpoint that the oscillation of a jet is nothing but the occurrence of an internal wave in the flow field of a jet. This paper is a sequel of the preceding one. Here, consideration is given to the oscillation mechanism of a jet, and an explanation of the phenomenon is proposed, taking account of the effect of pressure feedback from the wedge in addition to the internal wave conception.
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页码:2872 / 2880
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