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Numerical studies of nonstationary conjugate convective heat transfer in vertical layers of liquid and gas separated by a thin metal partition

Authors
  • Berdnikov, V. S.1, 2
  • Kislitsyn, S. A.1, 2
  • 1 Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia , Novosibirsk (Russia)
  • 2 Novosibirsk State Technical University, Novosibirsk, Russia , Novosibirsk (Russia)
Type
Published Article
Journal
Thermophysics and Aeromechanics
Publisher
Kutateladze Institute of Thermophysics SB RAS
Publication Date
Jan 01, 2021
Volume
28
Issue
1
Pages
103–114
Identifiers
DOI: 10.1134/S0869864321010108
Source
Springer Nature
Keywords
License
Yellow

Abstract

The development of a convective flow after sudden heating of a vertical wall that laterally bounds a layer of ethyl alcohol in a system consisting of vertical layers of alcohol and air, separated by a thin metal partition, is studied numerically in a conjugate problem statement. The equations of thermogravitational convection in the Boussinesq approximation, written in variables of temperature, vortex, and stream function, are solved by the finite element method. The development of unsteady hydrodynamic and thermal boundary layers on all four vertical walls is studied. The temperature fields in liquid, gas and in a vertical partition are calculated. The features of the development of the spatial form of the flow and unsteady conjugate convective heat transfer between the layers of liquid and gas affect significantly the unsteady temperature fields and temperature gradients in a thin metal partition. The maximum temperature gradients in the partition appear at the initial stage of flow development.

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