Fluctuation emergence of bubbles under a rapid drop of pressure in a liquid / Pavlov P. A.,Vinogradov V. E. // THERMOPHYSICS AND AEROMECHANICS. - 2015. - V. 22, l. 4. - P. 441-452.

ISSN/EISSN:

0869-8643 / 1531-8699

Type:

Article

Abstract:

Explosive cavitation at the front of a negative-pressure pulse has been studied. Conditions for the emergence of bubbles by the mechanism of homogeneous fluctuation nucleation were identified. Those conditions feature a high rate of the phase transformation, with the vapor formation process being concentrated in time at the instant of attainment of a certain pressure. Under such conditions, the liquid cavitation strength is maximal, and its value can be predicted by the homogeneous nucleation theory. For implementing the regime with high nucleation frequency, a method based on passing a negative-pressure pulse across a region with locally heated liquid was employed. The cavitation kinetics was examined by monitoring the perturbation of the heat flow from a miniature heater. The experimental data were generalized using the theory of explosive vapor formation in shock boiling mode. A method for calculating the cavitation in the regime of the fluctuation emergence of bubbles was approbated.

Author keywords:

cavitation; extension; homogeneous nucleation; heat flux

DOI:

10.1134/S0869864315040058

Web of Science ID:

ISI:000362953400005

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUL
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1531-8699
Research-Areas	Thermodynamics; Mechanics
Web-of-Science-Categories	Thermodynamics; Mechanics
Author-Email	vinve@mail.ru
Funding-Acknowledgement	Russian Foundation for Basic Research {[}12-08-00117]; Ural Division of the Russian Academy of Sciences {[}1, 12-P-2-1008]
Funding-Text	This work was supported financially by the Russian Foundation for Basic Research (Project No. 12-08-00117) and by the Ural Division of the Russian Academy of Sciences (Program No. 1, Project 12-P-2-1008).
Number-of-Cited-References	16
Usage-Count-Since-2013	2
Journal-ISO	Thermophys. Aeromechanics
Doc-Delivery-Number	CT6WK