冲激声源棒-环型电极特性仿真研究

基于液电效应的水下脉冲放电技术产生的冲激声源被广泛应用于震源模拟、油田解堵增产、管道除垢、结石破碎和污水处理等领域。其中冲激声源的产生受到回路参数、间隙距离等多种因素影响。研究分析各因素对冲激声源的影响规律,有助于促进冲激声源的进一步应用。该文对棒-环电极结构的水下等离子体放电过程进行数值模拟,采用有限元分析方法对棒-环电极结构进行理论研究,得到不同初始条件对冲激波特性的影响作用。该文基于棒-环型电极结构,研究充电电压和电极间隙对棒-环型电极结构的影响,目的是为找寻冲激波更强、频带更宽、能量更高的声源。该文对研究棒-环型电极的实际应用提供参考。

The impulse sound source generated by the underwater pulse discharge technology based on the hydroelectric effect is widely used in the fields of seismic source simulation,oilfield plugging and stimulation,pipeline descaling,stone crushing,sewage treatment and other fields.Among them,the generation of impulse sound source is affected by many factors such as loop parameters and gap distance.The study and analysis of the influence of various factors on the hedge excitation sound source is helpful to promote the further application of the impulse sound source.In this paper,the underwater plasma discharge process of the rod-ring electrode structure is numerically simulated,and the finite element analysis method is used to study the structure of the rod-ring electrode theoretically,and the influence of different initial conditions on the hedging shock wave characteristics is obtained.Based on the rod-ring electrode structure,the effects of the charging voltage and electrode gap on the rod-ring electrode structure are studied,and the goal is to find the sound source with stronger impulse shock,wider frequency band and higher energy.This paper can provide a reference for the practical application of rod-ring electrodes.