Numerical investigation of strong compression of vapor inside spherical cavitation bubbles

11th International Conference on "Mesh methods for boundary-value problems and applications"

Khalitova, T.F.^1 ; Toporkov, D.Yu.^1

Institute of Mechanics and Engineering, Kazan Science Center, Russian Academy of Sciences (IME KazSC RAS), 2/31, Lobachevsky str., Kazan

420111, Russia^1

关键词: Bubble in waters;    Cavitation bubble;    Interphase boundaries;    Numerical investigations;    Numerical techniques;    Rayleigh-Plesset equation;    Thermodynamic parameter;    Van der Waals equation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/158/1/012052/pdf
DOI  :  10.1088/1757-899X/158/1/012052

来源: IOP

【 摘 要 】

Numerical investigation of possibility of realizing shock waves in cavitation bubbles during their collapse in water, acetone, and tetradecane is performed. The radius of the bubble is 500 pm, the liquid pressure and temperature are in the ranges of 1-100 bar and 293-313 K, respectively. A numerical technique is used in which the movement of the interphase boundary is governed by the Rayleigh-Plesset equation. The thermodynamic parameters of the vapor are assumed uniform, the state of the vapor being described by the modified Van der Waals equation. The shock waves inside a bubble in tetradecane are found to arise in all the conditions under consideration. By contrast, inside the bubble in acetone they do not appear at relatively low pressures, while inside the bubble in water they never arise. At equal initial data the shock wave is formed much closer to the interface in the case of tetradecane.