Publication de 4 numéros par an
ISSN Imprimer: 2169-2785
ISSN En ligne: 2167-857X
Indexed in
FILM FLOW WITH LOCAL HEATING: ANALYSIS OF 2D STRUCTURE INSTABILITY
RÉSUMÉ
This paper is devoted to the analytical study of the stability of a two-dimensional (2D) structure of liquid film flow with local heating. The limiting irrotational 2D steady-state solution for a gravity-driven non-isothermal thin film (including the case with a moving heat source) is considered. The instability of this flow regime with respect to infinitesimal long-wavelength transverse perturbations is revealed, and the expression for the characteristic wavelength of unstable perturbation is derived. The dependence of a developing three-dimensional flow structure period on the main physical parameters is analyzed. Good accordance with the known experimental and theoretical data is obtained. The numerical solution to the quasi-linear evolution equation is presented.
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Aktershev S.P., Alekseenko S.V., Thermocapillary instability and rivulet structure formation in uniformly heated falling liquid film, International Journal of Multiphase Flow, 114, 2019. Crossref
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Aktershev S.P., Chinnov E.A., Shatskiy E.N., Thermocapillary rivulets in a locally heated falling liquid film, International Journal of Heat and Mass Transfer, 143, 2019. Crossref