【作者】 李静；

【导师】 杨嘉祥；

【作者基本信息】 哈尔滨理工大学 ， 高电压与绝缘技术， 2004， 硕士

【摘要】 为了提高船舶航行速度和降低噪声,以适应现代化战争的需要,本文在对传统推进方式分析的基础上,参照空间等离子体与水中磁流体两种推进方式,设计了水射流等离子弧推进模型和系统,利用所建造的模型进行了实验研究,并通过有限元方法对电极间的电场分布进行了数值模拟,得到的理论计算和实验结果基本一致。在理论分析了水中等离子体产生机理及其推进效应的基础上,建造了由水射流等离子弧推进系统、供水系统及控制系统组成的推进模型。水射流等离子弧推进单元采用同轴式环-棒电极系统;控制系统利用自行研制的交流相位调压电路以及频率控制电路,实现了对等离子弧推进模型的速度及供水的控制。本实验采用并建立了由光电传感器、继电器、HB72智能双数显计测器组成的模型速度测量和推力检测系统,利用该实验系统,获取了有关水射流等离子弧的推进速度与电极结构、推进器供水量以及外施电压之间的关系。文中以静电场的Lapalace方程为理论基础,利用有限元方法对不同电极尺寸、电极间距及阴极半径下的求解区域进行了单元剖分及总体合成,利用ANSYS为计算平台,在给定的边界条件下计算出电场分布的数值解。该项研究实验模型的建立为水射流等离子弧推进的应用奠定了理论和实验基础。更多还原

【Abstract】 In order to speed up the ship, lower its noise and meet the needs of modern warfare, the thrusting model and system based on water jet plasma arc were designed, which referred to the spatial plasma propulsion and the water magnetic fluid thrust. The distribution of electric field between the electrodes was also calculated on the basis of finite element method. The experimental results acquired by this system consisted with the computational solution very well. The thrust model made of propulsion system、water supply and control system was designed on the basis of analysis on the mechanism of water plasma and thrust effect. Coaxial ring-stick electrode system was adopted in the thrust unit and control system by which thrust velocity and water supply could be dominated was advanced. The control system was made up of AC phase voltage regulating and frequency control circuit. Velocity-measuring system comprised of photoelectric sensor、relay and intelligent double digital display instrument typed HB72 and thrust-measuring system was also designed and adopted in this experiment. The relationships between thrust speed of water jet plasma arc and electrode configuration、water intake and applied voltage could be acquired by these measure systems. Theoretically based on the Lapalace equation of electrostatic field, solve areas under different electrode dimension, distance and cathode radius were subdivided and synthesized by the use of finite element method. The numerical solution of electric field distribution under specified boundary condition was calculated on the platform of ANSYS.The erection of experimental models investigated in this experiment established the principle and experimental foundations for the application of water jet plasma arc thrust in water.更多还原