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Formation of a cavity in the initial stage of motion of a circular cylinder in a fluid with a constant acceleration

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Abstract

This paper considers the joint motion of an ideal fluid and a circular cylinder completely immersed in it at small times. It is assumed that the cylinder, which was initially at rest, moves in a horizontal direction with a constant acceleration. The dynamics of the internal and external free boundaries of the fluid at small times is studied. An asymptotic analysis of the form of the internal free surface near the separation points is performed. It is shown that at high acceleration of the circular cylinder, a large cavity is formed behind, with a strong perturbation of the external free surface of the fluid over the surface of the cylinder.

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Authors and Affiliations

  1. Southern Federal University, Rostov-on-Don, 344090, Russia

    M. B. Norkin

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  1. M. B. Norkin
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Correspondence to M. B. Norkin.

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Original Russian Text © M.B. Norkin.

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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 53, No. 4, pp. 74–82, July–August, 2012.

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Norkin, M.B. Formation of a cavity in the initial stage of motion of a circular cylinder in a fluid with a constant acceleration. J Appl Mech Tech Phy 53, 532–539 (2012). https://doi.org/10.1134/S0021894412040074

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  • DOI: https://doi.org/10.1134/S0021894412040074

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