An experimental study of the capillary elevation rate of water-alcohol mixtures on modified surfaces
M.V. Gorbachev1, M.S. Makarov1,2, A.I. Syuzaev1, V.I. Terekhov1,2
1Novosibirsk State Technical University, Novosibirsk, Russia
2Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: heat and mass transfer, boundary layer, modified surface, capillary-porous surface, water-alcohol mixture, evaporation
Abstract
The wetting dynamics of modified capillary-porous surfaces made of aluminum and titanium was experimentally studied at free-convective heat exchange with the environment. The influence of the concentration of ethyl alcohol and its initial temperature on the wetting front velocity has been established. The volume concentration of alcohol in the mixture varied from 0 to 95.5%. The characteristic modes of changes in the height of the liquid rise over capillary-porous surfaces over time have been expressed in the form of power dependences.
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