电弧等离子体存在着体积小和不稳定性的问题一直是人们关注的重点。基于多弧发生技术可以获得较均匀的大面积电弧等离子体，使其在材料制备等应用方面展现出独特的优势。但由于电弧与电弧间的相互作用，使得射流等离子体不稳定性愈加复杂，限制了该技术的进一步发展。本项目以多弧等离子体发生器为对象，开展大气压下多弧体系中等离子体射流脉动特性的研究，通过实验和理论计算方法，研究弧柱-弧柱间相互作用、阳极区边界层特性对电弧行为及射流脉动特性的影响机制，分析发生器阴极结构配置和放电参数变化对电弧动力学特征的影响，通过研究弧根时间、空间演化及式样变化，探索电弧运动模式，阐明多弧等离子体射流脉动行为规律，建立提高射流稳定性的调控方法，揭示多弧体系中等离子体射流脉动形成机理，为提高多弧等离子体射流稳定性、推动该技术的发展和应用提供理论和实验基础。

The problem of small volume and instability of arc plasma is an important issue that has always been drawn great attention. A uniform and large area arc plasma can be obtained by multi-arc discharge technology, which shows advantages in the applications of material preparation. However, due to the interaction between arc and arc, the instability of jet plasma is more complicated, which limits the further development of multi-arc plasma technology. In the project, the fluctuation characteristics of plasma jet generated by multi-arc generator will be investigated at atmospheric pressure. The effects of interaction between arc column and arc column, anode boundary layer characteristics in multi-arc plasma generator on arc behavior and fluctuation of plasma jet will be investigated. The influences of cathode configuration in plasma generator and discharge parameters on arc dynamic behavior. The arc motion mode will be explored by studying the time and space evolution and pattern charge of arc root. The law of fluctuation of multi-arc plasma jet will be clarified, and the control method for improving the stability of jet plasma will also be established. Through the research, the mechanism of fluctuation of plasma in the multi-arc system will be revealed, which provides the theoretical and experimental basis for improving the stability of multi-arc plasma jet and promoting the development and application of the technology.