2014 1(14)

Back to table of content

   Short abstract

 

Pages:

75 - 81

Language:

RU

Ref.:

6


Click to get extended abstract


Download paper: [RU]

2014_1(14)_13.pdf

 

 

INVESTIGATION OF NONLINEAR WAVES ON A FALLING THIN LIQUID FILM ENTRAINED BY TURBULENT CO-CURRENT GAS FLOW

Vozhakov I.S.1, Tsvelodub O.Yu.1,2, Arkhipov D.G.1,2

1 Institute of Thermophysics SB RAS, Novosibirsk, Russia
2 Novosibirsk State University, Novosibirsk, Russia


Citation:

Vozhakov, I.S., Tsvelodub, O.Yu. and Arkhipov, D.G., (2014) Investigation of nonlinear waves on a falling thin liquid film entrained by turbulent co-current gas flow, Modern Science: Researches, Ideas, Results, Technologies, Iss. #1(14), PP. 75 - 81.


Keywords:

flowing down film; gas flow; model system; stability; evolution of perturbations


Abstracts:

A new system of equations was derived to model the dynamics of long-wave perturbations on the surface of a thin layer of viscous liquid flowing down over a vertical plane and swept by co-current turbulent gas flow. The analysis of linear stability of the unperturbed flow was carried out. It has been found out that at moderate Reynolds numbers of liquid the linear Benjamin models and the models of boundary conditions transfer to the unperturbed level for the perturbed gas flow give qualitatively similar results. At a decrease in Reynolds number, the differences between the results obtained from different models of turbulence, become more pronounced. In the case of a small Reynolds number of liquid this system of equations results in one evolutionary equation for the deviation of film thickness from the unperturbed level. Some solutions to this equation are presented.


References:

  1. Alekseenko, S.V., Arkhipov, D.G., Tsvelodub, O.Yu. Divergent system of equations for a fluid film flowing down a vertical wall // Dokl. Phys. - Vol 2011. . - Vol 56 . - P. 22-25.

  2. Alekseenko S.V., Arkhipov D.G., Tsvelodub O.Yu. Modelling of the stresses produced by the turbulent gas flow over the wavy liquid film // Transport Phenomena with Moving Boundaries. 2007. Berlin.P. 51(62.

  3. Alekseenko S.V., Aktershev S.P., Cherdantsev A.V., Kharlamov S.M., Markovich D.M. Primary instabilities of liquid film flow sheared by turbulent gas stream // International Journal of Multiphase Flow. 2009. Volume 35, pp. 617(627.

  4. Aktershev S.P., Alekseenko S.V., Interfacial instabilities in an annular two-phase flow // Russian Journal of Engineering Thermophysics. 1996. Volume 6, No. 4, pp. 307(320.

  5. Tseluiko D., Kalliadasis S. Nonlinear waves in counter-current gas-liquid film flow // Journal of Fluid Mechanics. 2011. Vol. 673. P. 19-59.

  6. О.Ю. Цвелодуб Моделирование волновых режимов на пленке вязкой жидкости, стекающей по вертикальной плоскости // Теплофизика и аэромеханика. - 2012. - Т. 19, № 2. - С. 183 - 192.

 

 
     

© SPIC "Kappa", LLC 2009-2016