The shape of a vapor cavity at explosive heterogeneous boiling
B.P. Avksentyuk1 and V.V. Ovchinnikov2
1Vinnitsa Institute of Trade and Economics of Kiev State University of Trade and Economics, Ukraine
2Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Pages: 609-616
Abstract
Investigation results on dimensions and shapes of vapor cavities forming at heterogeneous explosive boiling of organic liquids at saturation in the large volume are presented. The stainless steel tube of the outer diameter of 2.5 mm was used as test section. Heating of the test section was quasi-stationary. The process of explosive boiling was recorded with the speed of up to 25000 frames/second. According to investigations, the growth laws for transverse parts of vapor cavities formed due to evaporation front propagation are similar. In all experiments, the exponent in the law of transverse dimension growth was the same for all cross sections and it was equal to the exponent in the law of vapor bubble growth. The simulation dependency for the generatrix of vapor cavity at heterogeneous explosive boiling under conditions of saturation is suggested.
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