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Formation of spatial structures in Rayleigh–Bénard convection

1991; Lebedev Physical Institute; Volume: 34; Issue: 9 Linguagem: Inglês

10.1070/pu1991v034n09abeh002470

2169-5296

А.В. Гетлинг,

Fluid Dynamics and Turbulent Flows

The problem of the selection of forms and scales of convective flows in a horizontal layer of liquid heated from below is studied. The basic types of two- and three-dimensional flows, defects of roll structures, exchange of convective regimes, and different situations in which two-dimensional rolls have a preferred wave number are described. It is shown that when considered in terms of an optimal (preferred) wave number, to which a roll structure tends and which may or may not be reached depending on the overall geometry of the flow, the different experimental and theoretical results form a unified consistent picture. The basic methods used for investigation of convective structures are described.