Thermocapillary migration of bubbles: Convective effects at low Péclet number (Q2755607)
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scientific article; zbMATH DE number 1671484
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Thermocapillary migration of bubbles: Convective effects at low Péclet number |
scientific article; zbMATH DE number 1671484 |
Statements
4 January 2004
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thermocapillary migration
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weak convective heat transfer
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Péclet number
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bubbles
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temperature gradient
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large time asymptotic behaviour
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initial separation
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radii ratio
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Thermocapillary migration of bubbles: Convective effects at low Péclet number (English)
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The authors examine the effect of weak convective heat transfer on the thermocapillary interaction of two bubbles migrating in an externally imposed temperature gradient. It is shown that equal-sized bubbles, which otherwise would move with equal velocities, acquire a relative motion apart from each other under the influence of convection. For slightly unequal bubbles, there are three different regimes of large-time asymptotic behaviour. Sufficient conditions for the realization of each regime are given in terms of Péclet number, initial separation and radii ratio.
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