高速ジェットを円柱に衝突させたときに発生するディスクリート・トーン [in Japanese] Discrete tones generated by the impingement of a high-speed jet on a circular cylinder [in Japanese]
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Experimental measurements were made of the frequencies of discrete tones emanating from high subsonic jet of air issuing from a circular nozzle and impinging on a slender circular cylinder placed normal to the jet axis.<BR>Schlieren photographs of the flowfield along with the near-sound field were taken. Close investigation of these photographs has shown that one strong sound wave is emitted near the cylinder and two large ring vortices are produced near the nozzle exit during one cycle of the feedback loop. These two large ring vortices merge together in a later stage of the loop.
- Transactions of Visualization Society of Japan
Transactions of Visualization Society of Japan 17, 111-114, 1997-07-01
The Visualization Society of Japan