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Wave regimes and mass transfer in two-layer falling films

Cekic, Gokcen (2015)
Ph.D. thesis, University of Birmingham.

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In this thesis, two-layer film flows down a vertical wall are studied. The integral method is used to derive an approximate system of evolution equations modelling long-wave flows of the film. Then, families of nonlinear steady-travelling periodic waves are computed. Computed waves have qualitatively similar behaviour to those found in one-layer films but the quantitative characteristics of the waves strongly depend on additional similarity parameters in the two-layer films. In particular, the average location of the interface between the layers affects the bifurcation scheme of the waves. To select the wave regimes which can be used to compare with experiments, systematic transient computations have been carried out to create a map of the attracting wave regimes, so-called dominating waves. For dominating wave regimes, the mass transfer problem for a weakly soluble gas is solved. In particularly, the absorption problem is systematically studied.

Type of Work:Ph.D. thesis.
Supervisor(s):Sisoev, Grigory
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:School of Mathematics
Subjects:QA Mathematics
Institution:University of Birmingham
ID Code:5554
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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