Open AccessEvaluation of small non-sphericity of converging shock waves in bubbles during collapse in acetone and tetradecane
Author(s) -
D. Yu. Toporkov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1328/1/012086
Subject(s) - tetradecane , sphericity , acetone , radius , shock wave , cavitation , thermodynamics , bubble , mechanics , materials science , chemistry , physics , composite material , organic chemistry , computer security , computer science
A strong compression of vapor in cavitation bubbles during their collapse in acetone and tetradecane at a temperature of 293 K and 663 K, respectively, is considered. At the beginning of collapse, the bubbles are at rest, their radius is 500 μm, the vapor in the bubbles is in a state of saturation at a temperature of the surrounding liquid. The pressures of tetradecane and acetone are 50 and 15 bar, respectively. At these pressures, the degrees of strong vapor compression in the cavitaion bubbles in tetradecane and acetone are fairly close to one another. An approximate estimate of maximum perturbations of the shock wave sphericity is made. It is shown that at the moment of focusing, the converging shock wave inside the bubble in acetone turns out to be more spherical despite the fact that at the end of collapse, the non-sphericity of the bubble in acetone is much greater.