Influence of Gravity on the Stability of Evaporative Convection Regimes : сборник научных трудов | Научно-инновационный портал СФУ

Influence of Gravity on the Stability of Evaporative Convection Regimes : сборник научных трудов

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.1007/s12217-018-9628-3

Ключевые слова: Evaporative convection, Exact solution, Characteristic perturbations, Stability

Аннотация: The characteristics of convective regimes in a two-layer system have been investigated in the framework of the Boussinesq approximation of the Navier-Stokes equations. An exact invariant solution of the convection equations is used to describe a joint stationary flow of an evaporating liquid and a gas-vapor mixture in a horizontal channel. Thermodiffusion effects in the gas-vapor phase are additionally taken into account in the governing equations and interface conditions. The influence of gravity and thickness of the liquid layer on the hydrodynamical, thermal and concentration characteristics of the regimes has been investigated. Flows of the pure thermocapillary, mixed and Poiseuille's types are specified for different values of the problem parameters. The linear stability of the evaporative convection regimes has been studied. The types and properties of the arising perturbations have been investigated and the critical characteristics of the stability have been obtained. Disturbances can lead to the formation of deformed convective cells, vortex and thermocapillary structures. The change of the instability types and threshold thermal loads occurs with the increasing thickness of the liquid layer and gravity action.

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Издание

Журнал: MICROGRAVITY SCIENCE AND TECHNOLOGY

Выпуск журнала: Vol. 30, Is. 4

Номера страниц: 543-560

ISSN журнала: 09380108

Место издания: NEW YORK

Издатель: SPRINGER

Авторы

  • Bekezhanova V.B. (Inst Computat Modelling SB RAS, Dept Differential Equat Mech, Akademgorodok 50-44, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Inst Math & Comp Sci, Svobodny 79, Krasnoyarsk 660041, Russia)
  • Shefer I.A. (Siberian Fed Univ, Inst Math & Comp Sci, Svobodny 79, Krasnoyarsk 660041, Russia)

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