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Thermophysics and Aeromechanics

2013 year, number 1

Stability of the heated liquid film in the presence of the thermocapillary effect

S.P. Aktershev
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: nonisothermal liquid film, stability, thermocapillary effect, stationary waves
Pages: 1-16


Stability of the flow of the heated liquid film is studied in the presence of the thermocapillary effect. To describe the waves in the film, the integral model is used. According to results of linear analysis of stability, the thermocapillary effect expands the area of instability only at low Peclet values Pe, and at high values of Pe, the instability area narrows. Wave evolution in the film on a substrate with the fixed temperature was simulated numerically. Results of numerical simulations agree with the linear theory of stability.