中文摘要：

文中以水作为工作溶液,空气作为工作气体,采用电压—电流波形测量、发光图像拍摄、发射光谱分析等手段诊断了网—板电极、管—板电极和刃—板电极结构气液两相介质阻挡放电（DBD）的放电特性,研究了外加电压幅值对这3种电极结构放电产生影响,进一步计算得到了放电功率、传输电荷、分子振动温度和分子转动温度等主要放电参量,研究了他们随外加电压变化的变化规律,并结合放电理论对不同电极结构下气液两相DBD的放电机制进行分析。结果表明,相同条件下网—板电极结构气液两相DBD放电最强,放电功率与传输电荷最大,放电电流可达140 m A。电极布置差异导致电场不均匀系数的不同是放电特性出现差异的主要原因。随着电压幅值的增加,3种电极结构放电增强,放电功率和分子振动温度增加,电子密度也增加。

英文摘要：

The discharge characteristics of dielectric barrier discharge（DBD） in gas-liquid mixture with the edge- plate, tube-plate, and mesh wire-plate electrode structures at atmospheric pressure in air were studied and com- pared by measuring voltage and current waveforms, taking lighting emission images, and using spectrum analysis. The changing trends of electrical parameters with the applied voltage were studied. Moreover, the discharge char- acteristics of DBD in gas-liquid mixture with different electrode structures were analyzed by combining gas dis- charge theory. The results show that the voltage and current waveforms, Lissajous figures , and optical emission spectrum of three electrode structure DBDs in gas-liquid mixture show different characteristics. At the same exper- imental conditions, the mesh wire-plate electrode structure DBD in gas-liquid mixture has the strongest discharge and the largest dissipated discharge power, and the discharge current can reach 140 mA. The arrangement of the electrode leads to difference non-uniform coefficient on electric field distribution, which is the main reason for the difference on discharge characteristics. With the increase in voltage amplitude, the discharge become strong, and the discharge power, molecular vibrational temperature and electron excited density all increase.