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

Peter Vadasz

doi:10.3390/physics3010012

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

Peter Vadasz

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

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 language	English (US)
Pages (from-to)	144-159
Number of pages	16
Journal	Physics (Switzerland)
Volume	3
Issue number	1
DOIs	https://doi.org/10.3390/physics3010012
State	Published - Mar 2021

Keywords

Binary mixtures
Natural convection
Soret effect
Thermodiffusion
Thermohaline
Thermophoresis
Thermosolutal

ASJC Scopus subject areas

General Physics and Astronomy

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10.3390/physics3010012

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title = "A Hidden Anomaly in the Binary Mixture Natural Convection Subject to Flux Boundary Conditions",

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.",

keywords = "Binary mixtures, Natural convection, Soret effect, Thermodiffusion, Thermohaline, Thermophoresis, Thermosolutal",

author = "Peter Vadasz",

note = "Publisher Copyright: {\textcopyright} 2021 by the author. Licensee MDPI, Basel, Switzerland.",

year = "2021",

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AB - 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.

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KW - Thermodiffusion

KW - Thermohaline

KW - Thermophoresis

KW - Thermosolutal

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

Abstract

Keywords

ASJC Scopus subject areas

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