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Experimental study of interaction between a vortex ring and a solid surface for a wide range of ring velocities

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Abstract

Experiments were carried out for interaction of water-travelling vortex ring with a solid surface with the normal impingement to the surface; the vortex velocity was varied by factor of 30 and the Reynolds number had 60-times span. Laminar and turbulent vortex rings have been studied. The ratio of the vortex diameter at the moment of rebound from the surface to the vortex diameter before impingement is almost independent of the vortex velocity and Reynolds number. Within the experimental accuracy, the diameter of the vortex ring after rebound equals the footprint of the vortex on the solid surface. This brings assumption that the previously observed restrictions on the trace were related to the vortex rebound from the solid surface.

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Authors and Affiliations

  1. Lavrentyev Institute of Hydrodynamics SB RAS, Novosibirsk, Russia

    V. V. Nikulin

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  1. V. V. Nikulin
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Correspondence to V. V. Nikulin.

Additional information

This research was financially supported by RFBR (Grant No. 14-08-00226a) and by the Program for Fundamental Research of the Presidium of RAS (No. 23.2).

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Nikulin, V.V. Experimental study of interaction between a vortex ring and a solid surface for a wide range of ring velocities. Thermophys. Aeromech. 21, 561–565 (2014). https://doi.org/10.1134/S0869864314050047

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  • DOI: https://doi.org/10.1134/S0869864314050047

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