Self-induced displacement and rotation of a melting ice disk on the still water surface

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Аннотация

The results of an experimental investigation and physical modeling of self-induced displacement and rotation of an ice disk on the still water surface are presented. The dependence of the ice specimen rotation velocity on the water salinity and the depth of the experimental container is measured. It is shown that the reason for observable motions over the still water surface is the cellular convective flow generated by the ice melting process.

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Авторлар туралы

A. Kistovich

Ishlinsky Institute for Problems in Mechanics, Russian Academy of Sciences

Email: tanya75.06@mail.ru
Ресей, Moscow

T. Chaplina

Ishlinsky Institute for Problems in Mechanics, Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: tanya75.06@mail.ru
Ресей, Moscow

Әдебиет тізімі

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1. JATS XML
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2. Fig. 1. Flow under an ice disk (d = 1.0 cm, hd = 0.3 cm, t = 1, 10 s).

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3. Fig. 2. Time dependence of the angular position of ice blocks (d = 2 cm, h = 1 cm) at different depths of fresh (a) and salt (b) water: 1–4 – H = 5, 10, 15, 20 cm.

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4. Fig. 3. (a) Computer simulation of a convective parquet formed by identical rising jets. (b) Photograph of a real convective structure in a thin layer of liquid [11] (top view).

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5. Fig. 4. The distribution function of the number of sides of a cell n – the Weibull distribution (2.1).

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6. Fig. 5. The distribution function of the cell perimeter P is a normal distribution with a shift (2.2).

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7. Fig. 6. The cell area distribution function: a) results of statistical processing of the ensemble of convective patterns with discretization of the area step by 0.01 in the area range S ∈[0, 1.5], b) part of Fig. 6 (a) in the area range S ∈[0, 0.12] (dark circles) and approximation of this distribution by the Weibull function Weibull (a, b, S) for a = 5.7, b = 2.2 (dashed curve).

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8. Fig. 7. A separate picture of convective cells at N = 4.

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9. Fig. 8. A separate picture of convective cells at N = 5.

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