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Year 2007, Volume 38 / Issue 3

DOI: 10.1615/HeatTransRes.v38.i3

Pages: 92

DOI: 10.1615/HeatTransRes.v38.i3.30

Article price - $40.00

Study of the Shape of Vapor Formations in Explosive Boiling

B. P. Avksentyuk
Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

V. M. Kravchenko
The Vinnitsa Commercial and Economic Institute of the Kiev National Commercial and Economic University, Ukraine

V. V. Ovchinnikov
Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

V. Ya. Plotnikov
Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

The results of the study of the dimensions and shape of vapor formations emerging during heterogeneous explosive pool boiling of organic liquids at saturation are presented. A stainless steel tube with an outside diameter of 2.5 mm served as a working section. The heating of the working section was quasi-steady. High-speed motion picture photography of the explosive boiling process with a speed of up to 25,000 frames/sec has been carried out. The studies have shown that the laws governing an increase of lateral dimensions of vapor formations that have appeared as a result of propagation of the evaporation front are similar to one another. In all the experiments, the exponent of the law of an increase of the cross-sectional dimension has proved to be the same for all cross sections and equal to the exponent of the law of vapor bubble growth. A computational relation for the generatrix of a vapor formation in heterogeneous explosive boiling at saturation conditions has been proposed.

pages 223-232

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