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Marangoni instability in a liquid layer confined between two concentric spherical surfaces under zero-gravity conditions

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Abstract

A liquid layer containing a single solute is bounded on the outside by a rigid spherical surface and on the inside by a concentric gas/liquid interface. The solute evaporates from the liquid to the gas phase and, if the surface tension depends on the solute concentration, surface-tension driven convective flows may arise (Marangoni instability). Assuming zero-gravity conditions and using a normal-mode approach, we study the linear stability of the time-dependent, spherically-symmetric concentration profiles in a motionless liquid. Numerical results are presented for Marangoni numbers and perturbation wave numbers in the case of neutral stability. It turns out that the system's stability properties are strongly dependent on the curvature of the interface and on the mass-transfer Biot number.

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Authors and Affiliations

  1. Department of Chemical Engineering, University of Groningen, Groningen, The Netherlands

    H. C. J. Hoefsloot & L. P. B. M. Janssen

  2. Department of Mathematics, University of Groningen, Groningen, The Netherlands

    H. W. Hoogstraten

Authors
  1. H. C. J. Hoefsloot
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  2. H. W. Hoogstraten
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  3. L. P. B. M. Janssen
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Hoefsloot, H.C.J., Hoogstraten, H.W. & Janssen, L.P.B.M. Marangoni instability in a liquid layer confined between two concentric spherical surfaces under zero-gravity conditions. Applied Scientific Research 47, 357–377 (1990). https://doi.org/10.1007/BF00386244

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  • DOI: https://doi.org/10.1007/BF00386244

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