Generation of Shock-Wave Disturbances at Plasma-Vapor Bubble Oscillation

12th International Conference on Gas Discharge Plasmas and Their Applications

Kuznetsova, N.S.^1 ; Yudin, A.S.^1 ; Voitenko, N.V.^1

National Research Tomsk Polytechnic University, Institute of High Technology Physics, 30 Lenin avenue, Tomsk

634050, Russia^1

关键词: Boundary displacements;    Discharge circuits;    Generator parameters;    High-voltage equipments;    Power characteristic;    Pressure wave generation;    Quantitative modeling;    Shock wave disturbances;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/652/1/012037/pdf
DOI  :  10.1088/1742-6596/652/1/012037

来源: IOP

【 摘 要 】

The complex physical and mathematical model describing all steps of plasma-vapor bubble evolution in the system of the water-ground condensed media is presented. Discharge circuit operation, discharge plasma channel expansion, its transformation into the vapor-plasma bubble and its pulsation, pressure wave generation and propagation of the mechanical stress waves in the ground are self-consistently considered in the model. The model allows investigation of the basic laws of stored energy transformation into the discharge plasma channel, next to the plasma-vapor bubble and transformation of this energy to the energy of pressure wave compressing the surrounding ground. Power characteristics of wave disturbances generated by gas-vapor bubble oscillation in liquid depending on the circuit parameters are analyzed for the prediction of the ground boundary displacement. The dynamics of the shock-wave propagation in water-ground condensed media depending on the rate of the plasma channel energy release is investigated. Simulation of the shock-wave phenomena at a plasma-vapor bubble oscillation in condensed media consecutively describes the physical processes underlying technology for producing piles by electro-discharge stuffing. The quantitative model verified by physical experimental tests will allow optimization of pulse generator parameters and electrode system construction of high-voltage equipment.