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1978

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May

  

Reviews of topical problems


On the nature of turbulence


P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, ul. Krasikova 23, Moscow, 117218, Russian Federation

The definition of turbulence and the differences between turbulence and random wave motions of liquids or gases are discussed. The Landau scheme of the generation of turbulence with increasing Reynolds number as a result of a sequence of normal bifurcations that creates a quasiperiodic motion is considered; several examples are discussed, including flow between rotating cylinders, convection at small Prandtl numbers, and the boundary layer at a flat plate. Results obtained in recent years from the ergodic theory and associated with the discovery of strange attractors in the phase spaces of typical dynamic systems are described. Flows with inverse bifurcations are considered, including the plane Poiseuille flow and Lorenz's example with idealized three-mode convection at large Prandtl numbers. In the latter case, the results of numerical calculations are analyzed and point to the existence of a strange attractor with the structure of a Cantor discontinuum; other examples of systems with strange attractors are also considered. It becomes clear that strange attractors in the phase spaces of systems with few modes may explain their nonperiodic behavior, but cannot explain why turbulence has a continuous spatial spectrum.

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Fulltext is also available at DOI: 10.1070/PU1978v021n05ABEH005554
PACS: 47.25.-c
DOI: 10.1070/PU1978v021n05ABEH005554
URL: https://ufn.ru/en/articles/1978/5/f/
Citation: Monin A S "On the nature of turbulence" Sov. Phys. Usp. 21 429–442 (1978)
BibTexBibNote ® (generic)BibNote ® (RIS) MedlineRefWorks
PT Journal Article
TI On the nature of turbulence
AU Monin A S
FAU Monin AS
DP 10 May, 1978
TA Phys. Usp.
VI 21
IP 5
PG 429-442
RX 10.1070/PU1978v021n05ABEH005554
URL https://ufn.ru/en/articles/1978/5/f/
SO Phys. Usp. 1978 May 10;21(5):429-442

Оригинал: Монин А С «О природе турбулентности» УФН 125 97–122 (1978); DOI: 10.3367/UFNr.0125.197805f.0097

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