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Observation of acoustic emission from head-on collision of two vortex rings

✍ Scribed by T. Minota; T. Kambe

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 604 KB
Volume: 111
Category: Article
ISSN: 0022-460X
DOI: 10.1016/s0022-460x(86)81422-5

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✦ Synopsis

Experimental observation of the wave generated by the head-on collision of two vortex rings has been made using the same method as in previous work [1], but with improved test facilities. Presented here are the average wave profiles observed in the far field, the Fourier decomposition, a perspective diagram of the wave profile and scaling law of the wave pressure with respect to the vortex speed. The data again suggests the existence of an isotropic monopolar component in addition to the quadrupolar component known in the inviscid theory.

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