Dynamics of a liquid film sheared by a co-flowing turbulent gas
File(s)
Accepted version
Author(s)
Vellingiri, R
Tseluiko, D
Savva, N
Kalliadasis, S
Type
Journal Article
Abstract
Consider the dynamics of a thin laminar liquid film flowing over an inclined wall in the presence of a co-flowing turbulent gas. The solution to the full two-phase flow problem poses substantial technical difficulties. However, by making appropriate assumptions, the solution process can be simplified and can provide valuable insights. The assumptions allow us to solve the gas and liquid problems independently. Solving for the gas flow reduces to finding perturbations to pressure and tangential stresses at the interface, influencing the liquid problem through the boundary conditions. We analyze the effect of gas flow on the liquid problem by developing an integral-boundary-layer model, which is valid up to moderate liquid Reynolds numbers. We seek solitary-wave solutions of this model under the influence of gas flow via a pseudo-arclength continuation method. Our computations demonstrate that as a general trend, the wave speed increases with increasing the gas shear and the liquid flow rate. Further insight into the problem is provided via time-dependent computations of the integral-boundary-layer model.
Date Issued
2013-10-01
Date Acceptance
2013-05-20
Citation
International Journal of Multiphase Flow, 2013, 56, pp.93-104
ISSN
0301-9322
Publisher
Elsevier
Start Page
93
End Page
104
Journal / Book Title
International Journal of Multiphase Flow
Volume
56
Copyright Statement
Copyright © Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000324442900009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
Science & Technology
Technology
Mechanics
Liquid film
Gas shear
Solitary waves
Co-current flow
Numerical continuation
SOLITARY WAVE DYNAMICS
FALLING FILM
SURFACTANT ADDITIVES
NONLINEAR-WAVES
INCLINED PLANES
VERTICAL DUCTS
AIR
INSTABILITY
GENERATION
STABILITY
Publication Status
Published
Date Publish Online
2013-05-30