A simulation of heat flow in the lower troposphere by a laboratory model

Fanaki, F.

doi:10.1007/bf02186036

Cited by 8 publications

(6 citation statements)

References 37 publications

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“…0148-0227/87/006C-0597505.00 formation of the large-scale convection. A similar plume was also found in the experiments by Fanaki [1971] and Krishnamurti and Howard [1981]. However, the structure and the role of that plume have not yet been sufficiently clarified.…”

Section: Krishnamufti and Howard [1981] Visualized Plumes In A Large-supporting

confidence: 78%

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: Krishnamufti and Howard [1981] Visualized Plumes In A Large-supporting

confidence: 78%

Convection lines on a heated bottom plate at large Rayleigh number

Tamai¹,

Asaeda²

1987

J. Geophys. Res.

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“…This probably the most difficult air flow simulate because strict simulation requires modeling a composite of mechanical and thermal turbulence. A few investigations have been conducted in water laboratory facilities where simulating the Reynolds number is slightly better than in a wind tunnel (Fanaki, 1971;Willis and Deardorff, 1975).…”

Section: Inversion-capped Free Convection (Unstable) Air Flow Amentioning

confidence: 99%

Critical review of wind tunnel modeling of atmospheric heat dissipation

Orgill¹

1977

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“…The past numerical works related to our problem are reviewed in Garstang et al (1975). As for the laboratory experiments, we have works by Fanaki (1971) and Yamada and Meroney (1974). The stable stratification, however, is not incorporated in the experiment by Fanaki (1971).…”

Section: Introductionmentioning

confidence: 99%

“…As for the laboratory experiments, we have works by Fanaki (1971) and Yamada and Meroney (1974). The stable stratification, however, is not incorporated in the experiment by Fanaki (1971). Yamada and Meroney (1974) used a stratified wind tunnel to observe the gravity waves produced by a heat island, but the experiment was not suited to resolving our problems.…”

Section: Introductionmentioning

confidence: 99%

Effects of General Flows on a Heat Island Convection

Kimura

Misawa

Sakagami

et al. 1977

Journal of the Meteorological Society of Japan

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Characteristics of two-dimensional heat island convection under general flows are investigated by numerical and laboratory experiments and the results are compared with those of the linear theory in Part 1 (Kimura, 1976). The aim in Part 2 is to examine the effects of 1) self-advection due to the convective motion, 2) vertical shear of the general flow, 3) Prandtl number and 4) ground temperature distribution upon the heat island convection. The main results obtained in the present study are as follows: 1) The self-advection has an effect to concentrate the updraft in a small area at the center of the heat island as stated in Kimura (1975), but the effect is reduced with the increase of the general flow. 2) The vertical shear of the general flow has an effect to increase the height of the inflow region of the perturbation flow field. 3) The small Prandtl number favours the development of the upstream perturbation in the middle layer as speculated in Part 1. 4) In Part 1 maximum values of the perturbation horizontal velocity (umax) decreased monotonously with the increase of the general flow, but in Part 2 it was found that umax is constant or slightly increases under the weak general flow for the more general ground temperature distributions than the form assumed in Part 1. 5) These effects shown in 1)~4), however, are not so significant as to alter the main features of the heat island convection obtained in Part 1.

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A simulation of heat flow in the lower troposphere by a laboratory model

Cited by 8 publications

References 37 publications

Convection lines on a heated bottom plate at large Rayleigh number

Convection lines on a heated bottom plate at large Rayleigh number

Critical review of wind tunnel modeling of atmospheric heat dissipation

Effects of General Flows on a Heat Island Convection

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