Measurement of wave characteristics of a non-isothermal liquid film by the capacitance method
E.A. Chinnov, A.D. Nazarov, O.A. Kabov, and A.F. Serov
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Pages: 429-435
Abstract
Wave characteristics of the water film flow over a vertical plate with a heater of 150x150 mm were measured by the capacitance method. The influence of heat flux density on the wave flow of a liquid film forms rivulets and a thin film between them. In the interjet area wave amplitude and thickness pulsation frequency decrease. Three-dimensional waves propagate along the jet crests. Wave amplitude is determined by a change in liquid film thickness under the action of thermocapillary forces. Relative amplitude is almost independent of the heat flux.
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