Engineering Transactions, 15, 2, pp. 249-258, 1967

Rozkład Wirowości w Oscylującej Warstwie Przyściennej Wokół Cylindrycznego Ciała

H. Paczyńska
Zakład Mechaniki Cieczy i Gazów Instytutu Podstawowych Problemów Techniki PAN

The vorticity in the wake behind of an oscillating body depends on the vorticity distribution on the body and near it. The generation of vorticity in an incompressible fluid is due to the viscosity which acts above all in the boundary layer. The object of this paper is to analyse the vorticity distribution in the boundary layer around a cylindrical body. The problem of velocity distribution in such a layer was considered by Lighthill in [2]. His results are used in this paper as a starting point. The calculations are made for the two limiting cases, when ω  V/l > 1 and ω V/l < 1; V is the velocity of potential flow, undisturbed by the presence of the body, l - the characteristic length of the body, and ω - the frequency of oscillation. The dependence of the vorticity distribution on the shape of the body is investigated.
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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).


W. FISZDON, On certain methods of analysis of the vortex flow behind an oscillating two-dimensional blunt-body, Arch. Mech. Stos., 1, 17 (1965).

M.J. LIGHTHILL, The response of laminar skin friction and heat transfer to fluctuations in the stream velocity, Proc. Roy. Soc., 224 (1953).

S. GOLDSTEIN, Modern Developments in Fluid Dynamics, Oxford University Press, 1952.

L. ROSENHED, Laminar Boundary layers, Oxford University Press, 1963.

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