Developing flow and transport above a suddenly heated horizontal surface in water

Mollendorf, Joseph C.; Arif, Humayun; Ajiniran, Emmanuel B.

doi:10.1016/0017-9310(84)90218-7

Cited by 14 publications

(1 citation statement)

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“…As for the starting process of convection, Foster [1965,1969] measured the temperature distribution near the heated bottom or the cooled surface and the time required for the generation of convection. Similar studies were performed by Mollendorf and Ajiniran [1984] and Tamai and Asaeda [1984a] (this paper will be referred to hereafter as paper 1). These studies confirmed that the first appearance of plumes is determined by the collapse of the conduction layer formed beforehand on the heated bottom.…”

Section: Introductionmentioning

confidence: 99%

Convection lines on a heated bottom plate at large Rayleigh number

Tamai¹,

Asaeda²

1987

J. Geophys. Res.

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The microstructure of thermal convection at large Rayleigh number was studied experimentally. Sheetlike plumes generated at the heated bottom plate are composed of several thermals generated successively. The projection of the sheetlike plumes on the bottom plate is called convection lines. On the other hand, in the area surrounded by sheetlike plumes where descending compensational flow prevails, the conduction layer always remains in the vicinity of the bottom, within which excess temperature is still high. The heat supplied from the bottom is transported horizontally by weak flow in the conduction layer toward the convection lines where rising sheetlike plumes carry the converged heat into the main body of water. Fluctuation of the convection lines was investigated. It is found that phenomenalogically, the merging of thermals causes much stronger sheetlike plumes and accelerates the formation of largescale convection.

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Section: Introductionmentioning

confidence: 99%