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Thermocapillary Instability of a Cylindrical Layer in the Presence of a Radial Temperature Gradient

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Abstract

Within a linear formulation, the thermocapillary instability of equilibrium of a cylindrical layer of heat-conducting viscous fluid in the presence of a radial temperature gradient is investigated with respect to arbitrary disturbances. It is shown that the Rayleigh instability mechanism results in the appearance of monotonous disturbances of a new type. For steady disturbances, the neutral curve is split into two separate segments, each corresponding to its own type of disturbances. For a deformable free boundary, new oscillating disturbances in the form of surface waves develop. It is found that, in the case of axial symmetry, the behavior of these disturbances completely coincides with the oscillating disturbance behavior in a plane layer.

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Ryabitskii, E.A. Thermocapillary Instability of a Cylindrical Layer in the Presence of a Radial Temperature Gradient. Fluid Dynamics 36, 341–348 (2001). https://doi.org/10.1023/A:1019232614312

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  • DOI: https://doi.org/10.1023/A:1019232614312

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