Equilibrium and stability of a free liquid film in a longitudinal gravitational field
Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 8 (2015) no. 3, pp. 253-259.

Voir la notice de l'article provenant de la source Math-Net.Ru

Deformation of the free vertical liquid film by combined effect of gravity and thermocapillary forces is investigated. The system of equations connecting the flow rate, the film thickness and its temperature is found in the framework of thin-layer approximation. Using the shooting method, one-dimensional stationary problem is solved numerically for values of contact angle close to a right angle. The existence of a film having the constant thickness is found. It is shown that this solution is stable when the gravity is low. Using numerical continuation method, value of the gravity for which this solution becomes unstable is found.
Keywords: liquid film, free surface, thin-layer approximation, thermocapillary effect, small disturbances, stability of solution.
@article{JSFU_2015_8_3_a0,
     author = {Oksana A. Burmistrova},
     title = {Equilibrium and stability of a free liquid film in a longitudinal gravitational field},
     journal = {\v{Z}urnal Sibirskogo federalʹnogo universiteta. Matematika i fizika},
     pages = {253--259},
     publisher = {mathdoc},
     volume = {8},
     number = {3},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JSFU_2015_8_3_a0/}
}
TY  - JOUR
AU  - Oksana A. Burmistrova
TI  - Equilibrium and stability of a free liquid film in a longitudinal gravitational field
JO  - Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika
PY  - 2015
SP  - 253
EP  - 259
VL  - 8
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JSFU_2015_8_3_a0/
LA  - en
ID  - JSFU_2015_8_3_a0
ER  - 
%0 Journal Article
%A Oksana A. Burmistrova
%T Equilibrium and stability of a free liquid film in a longitudinal gravitational field
%J Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika
%D 2015
%P 253-259
%V 8
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JSFU_2015_8_3_a0/
%G en
%F JSFU_2015_8_3_a0
Oksana A. Burmistrova. Equilibrium and stability of a free liquid film in a longitudinal gravitational field. Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 8 (2015) no. 3, pp. 253-259. http://geodesic.mathdoc.fr/item/JSFU_2015_8_3_a0/

[1] W. Soua, A. Kaiss, L. Tadrist, O. Kabov, “Hydrodynamic and Heat Transfer of a falling liquid film on a horizontal heated tube: Simulation and Experimentation”, Third International Topical Team Workshop on two-phase systems for ground and space applications (Brussels, Belgium, September 10–12, 2008)

[2] H. Fridhi, W. Soua, A. Kaiss, L. Tadrist, “Flow patterns and wavelength measurement for liquid film falling around horizontal tube”, Conference: Composite Materials Renewable Energy Applications (ICCMREA), 2014 International Conference, 1–6

[3] V. V. Pukhnachov, “Thermocapillary convection under law gravity”, Fluid Dynamics Transaction, 14 (1989), 145–204

[4] L. G. Napolitano, “Thermodynamics and Dynamics of Surface Phases”, Acta Astronaut., 5:5–6 (1979), 1093–1112

[5] V. A. Batishchev, V. V. Kuznetsov, V. V. Pukhnachov, “Marangoni boundary layers”, Prog. Aerospace Sci., 26 (1989), 353–370 | Zbl

[6] V. V. Pukhnachov, S. B. Dubinkina, “Model of deformation and breakdown of a free nonisothermal film by thermocapillary forces”, Trudy Ross. Akad. Nauk. Mekhanika Zhidkosti i Gaza, 2006, no. 5, 89–107 (in Russian)

[7] S. V. Meleshko, V. V. Pukhnachev, T. P. Pukhnacheva, “Traveling waves and self-similar solutions in model of free non-isothermal liquid film”, Advances in Mathematical Sciences and Applications, 14:5-6 (2004), 25–40 | MR

[8] A. S. Ovcharova, “Features of the rupture of free hanging liquid film under the action of a thermal load”, Physics of Fluids, 23:10 (2011), 102–106

[9] O. A. Burmistrova, “Stability of a vertical liquid film with consideration of the Marangoni effect and heat exchange with the environment”, Journal of Applied Mechanics and Technical Physics, 55:3 (2014), 386–393 | MR

[10] A. D. Myshkis, V. G. Babskii, N. D. Kopachevskii, L. A. Slobozhanin, A. D. Tiuptsov, Hydromechanics of weightlessness, Nauka, M., 1976 (in Russian)

[11] S. K. Godunov, “Numerical Solution of Boundary-Value Problems for Systems of Linear Ordinary Differential Equations”, Usp. Mat. Nauk, 16:3 (1961), 171–174 (in Russian) | MR | Zbl

[12] A. A. Abramov, “On the transfer of boundary conditions for systems of ordinary linear differential equations (a variant of the dispersive method)”, Zh. Vychisl. Mat. i Mat. Fiz., 1:3 (1961), 542–545 (in Russian) | MR | Zbl