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Investigating waves on the surface of a thin liquid film entrained by a turbulent gas flow: modeling beyond the “quasi-laminar” approximation

Investigating waves on the surface of a thin liquid film entrained by a turbulent gas flow:... The problem of the joint flow of a turbulent gas stream and a vertically falling wavy liquid film is considered. Tangential and normal stresses on the interfaces are calculated. The components of the Reynolds stress tensor are determined within the framework of the Boussinesq hypothesis. For the case of small Reynolds numbers of a liquid, the problem is reduced to a nonlinear integro-differential equation for the deviation of the layer thickness from the unperturbed level. A numerical study of the evolution of periodic perturbations is carried out. Several typical scenarios of their development are presented. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Thermophysics and Aeromechanics Springer Journals

Investigating waves on the surface of a thin liquid film entrained by a turbulent gas flow: modeling beyond the “quasi-laminar” approximation

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References (22)

Publisher
Springer Journals
Copyright
Copyright © O.Yu. Tsvelodub, D.G. Arkhipov, and I.S. Vozhakov 2021
ISSN
0869-8643
eISSN
1531-8699
DOI
10.1134/s0869864321020050
Publisher site
See Article on Publisher Site

Abstract

The problem of the joint flow of a turbulent gas stream and a vertically falling wavy liquid film is considered. Tangential and normal stresses on the interfaces are calculated. The components of the Reynolds stress tensor are determined within the framework of the Boussinesq hypothesis. For the case of small Reynolds numbers of a liquid, the problem is reduced to a nonlinear integro-differential equation for the deviation of the layer thickness from the unperturbed level. A numerical study of the evolution of periodic perturbations is carried out. Several typical scenarios of their development are presented.

Journal

Thermophysics and AeromechanicsSpringer Journals

Published: Jul 18, 2021

Keywords: thin liquid film; turbulent gas flow; turbulent viscosity; Boussinesq hypothesis; evolution equation; periodic perturbations

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