A Hidden Anomaly in the Binary Mixture Natural Convection Subject to Flux Boundary Conditions

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Abstract

The problem of natural convection in a binary mixture subject to realistic boundary conditions of imposed zero mass flux on the solid walls shows solutions that might lead to unrealistic negative values of the mass fraction (or solute concentration). This anomaly is being investigated in this paper, and a possible way of addressing it is suggested via a mass-fraction-dependent thermodiffusion coefficient that can have negative values in regions of low mass fractions.

Original languageEnglish (US)
Pages (from-to)144-159
Number of pages16
JournalPhysics (Switzerland)
Volume3
Issue number1
DOIs
StatePublished - Mar 2021

Keywords

  • Binary mixtures
  • Natural convection
  • Soret effect
  • Thermodiffusion
  • Thermohaline
  • Thermophoresis
  • Thermosolutal

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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