He二维射流阵列放电模式转换条件实验

发布时间：2018-06-17 04:02

本文选题：等离子体射流 + 射流阵列　；参考：《电工技术学报》2017年20期

【摘要】：为获得高强度和大面积大气压下等离子体射流,利用类蜂巢状电极结构,在大气压He中获得了两种不同模式的二维射流阵列放电,比较了它们的放电特性,并研究了气流速度、射流单元之间距离和外加电压幅值等参数对射流阵列模式转换的影响。结果表明,He中射流阵列在一定条件下会出现具有较高放电强度的强耦合模式和具有较大放电面积的均匀模式两种放电模式,相同的外加电压幅值下,强耦合模式阵列的放电功率、传输电荷和主要粒子谱线强度均高于均匀模式。射流单元之间距离和气体流速是影响射流阵列模式转换的主要决定因素,外加电压的变化只会影响到放电强度而不会影响到射流阵列的放电模式。射流单元之间距离为0.2mm,流速小于5L/min时,放电模式为强耦合模式;流速大于5L/min放电转换到均匀模式;当射流单元之间的距离超过0.4mm时,放电只出现均匀模式。
[Abstract]:In order to obtain plasma jet with high intensity and large area at atmospheric pressure, two kinds of two-dimensional jet arrays with different modes were obtained in atmospheric pressure he by using honeycomb like electrode structure. Their discharge characteristics were compared, and the flow velocity was studied. The influence of the parameters such as the distance between the jet units and the amplitude of the applied voltage on the mode conversion of the jet array. The results show that there are two discharge modes, one is the strong coupling mode with high discharge intensity and the other is the uniform mode with large discharge area, and the other is under the same applied voltage amplitude. The discharge power, transport charge and the spectral line intensity of the main particles in the strongly coupled mode array are higher than those in the uniform mode. The distance between the jet cells and the gas velocity are the main determinants of the mode conversion of the jet array. The change of the applied voltage will only affect the discharge intensity but not the discharge mode of the jet array. When the flow velocity is less than 5L / min, the discharge mode is strong coupling mode, the discharge velocity is greater than 5L / min to the uniform mode, and when the distance between the jet units exceeds 0.4mm, only uniform mode occurs.
【作者单位】：南京工业大学电气工程学院与控制科学学院;
【基金】：国家自然科学基金(51377075、51677083) 江苏省六大人才高峰项目(2014-XNY-006) 江苏省青蓝工程资助项目(20140610)
【分类号】：O53

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