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I.M.Neklyudov, B.V.Borts, V.I.Tkachenko Description of the Langmuir circulations by the ordered set of convective bicubic cells |
Applied hydromechanics, Vol. 14 (86) ¹ 2, (2012) |
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A theoretic model is proposed for description of the Langmuir circulations
(LC) by the ordered set of convention cubical cells with free boundaries.
It is shown that the flows typical of LC can be formed by the corresponding
arranging of the convection cubic cells. The theoretical model is compared
with the experimental data. The explanation of the LC peculiarities is
offered. In particular, the reason for difference between the velocities of
descending and ascending flows of LC in the direction transverse to the
wind speed is clarified. Due to mentioned difference, the shift of centers
of the adjacent counter rolls to the descending flow is shown. The
estimation of threshold wind speed is given, which excess results in
forming of the LC. The invariance of LC formation depending upon the way of
liquid heating is substantiated on the basis of symmetry properties of
the initial system of linear equations. A non-symmetric distribution of flow
velocity of liquid surface layer in the LC in transverse to the wind
speed direction is described. It is shown that wind-streaks
orientation relatively to wind direction is caused by the effect
of the Coriolis force.
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KEY WORDS: Langmuir circulations, cubical cells, surface layer of the liquid |
| TEXT LANGUAGE: Russian |