Studying the Dynamics of Breakdown of Thin Horizontal Liquid Layers with Local Heating
1 Kutateladze Institute of Thermophysics SB RAS, 630090 Novosibirsk, Russia
2 Novosibirsk State University, 630090 Novosibirsk, Russia
3 Tomsk Polytechnic University, 634050 Tomsk, Russia
* Corresponding author: email@example.com
Experimental study of liquid layers breakdown when heated locally from the substrate side was made. Water and ethanol were used as working liquids with a layer thickness of 300 μm. Basic steps of the breakdown process were found and mean velocities of the dry spot formation were determined; the values are 0.06 mm/sec for ethanol and 5.15 mm/sec for water. The formation of residual layer over the hot-spot before the breakdown has been found for both liquids. The creation of a droplet cluster near the heating region is observed when using water as a working fluid. It was shown that evaporation is one of the general factors influencing the process of layer breakdown and dry spot formation as well as thermocapillary effect.
© The Authors, published by EDP Sciences, 2016
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