Spectral analysis of the von Kármán flow using ultrasound scattering
- 8 July 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 67 (2) , 193-195
- https://doi.org/10.1103/physrevlett.67.193
Abstract
We report experimental evidence that the scattering of sound waves by a fluid may be used, as a nonintrusive and nonlocal method, to characterize the space-time structure of the flow. The experiment has been performed using, as a test flow, the von Kármán vortex street behind a cylinder at a low Reynolds number (Re=50). The results are in good qualitative agreement with earlier experiments on the von Kármán vortex street and with recent theoretical developments on sound-vorticity interaction.Keywords
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