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Journal of Visualization

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30-01-2019 | Regular Paper

Experimental investigation on the streamwise vortex–surface interaction

Authors: Zhijun Sun, Yunsong Gu, Hang Zhao

Published in: Journal of Visualization | Issue 3/2019

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Abstract

Interaction of a vortex with a blade, wing or fin may involve both rapid distortion of the incident vorticity field and unsteady flow near the surface. A variety of flow visualization methods were applied in the experiment to observe the change of flow characteristics during a streamwise vortex–surface interaction. Particle image velocimetry measurements were carried out on a 2-D flow field in the near-wall area. The topology structure of the flow field during the vortex–surface interaction was obtained. The near-wall vorticity layer caused by the primary vortex formed secondary vortex. The initial strength of the incident vortex and distance between vortex core and the surface are the main parameters that affect the characteristics of flow field. The relevant results will help further study on the mechanism of interaction.

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Title: Experimental investigation on the streamwise vortex–surface interaction
Authors: Zhijun Sun
Yunsong Gu
Hang Zhao
Publication date: 30-01-2019
Publisher: Springer Berlin Heidelberg
Published in: Journal of Visualization / Issue 3/2019
Print ISSN: 1343-8875
Electronic ISSN: 1875-8975
DOI: https://doi.org/10.1007/s12650-018-00544-3

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Abstract

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