The invention discloses a ship lightning environment transient electromagnetic field simulation method, which comprises the following steps of: 1) making the following assumptions on a lightning return stroke process, and considering that a return stroke channel is an ideal vertical antenna; 2) obtaining a longitudinal electric field and an angular magnetic field generated by return stroke current at any moment and any position by a dipole method when the return stroke current is known; 3) modeling return stroke current by using a transmission line return stroke model; 4) describing features of the lightning current by applying a Heidler function model, and obtaining a lightning current analytical expression by combining a transmission line return stroke model; and 5) substituting the lightning current analytical expression into an electric field and magnetic field formula to obtain an electromagnetic field generated by return stroke current at any time and any position. The simulation method is applied to the overall design of the ship, the electric field and the magnetic field generated at the ship when lightning occurs in the ocean can be obtained, the method is used for analyzing and researching the influence on microelectronic equipment, and the ship lightning protection design and ship surface equipment arrangement can be further supported.
本发明公开了一种舰船雷电环境瞬态电磁场仿真方法,包括以下步骤:1)对闪电回击过程作以下假设,并认为回击通道是一根理想的垂直天线;2)由偶极子法得到当回击电流已知时,该回击电流在任一时刻、任一位置产生的纵向电场和角向磁场;3)使用传输线回击模型对回击电流进行建模;4)应用Heidler函数模型描述雷电流的特征,结合传输线回击模型得到雷电流解析表达式;5)将雷电流解析表达式带入电场和磁场公式中,得到回击电流在任一时间、任一位置处产生的电磁场。本发明仿真方法应用于舰船总体设计中,可以得到海洋中发生闪电时在舰船处产生的电场和磁场,用于分析研究对微电子设备产生的影响,可以进一步支撑舰船雷电防护设计和舰面设备布置。
Transient electromagnetic field simulation method for ship lightning environment
一种舰船雷电环境瞬态电磁场仿真方法
2024-02-27
Patent
Electronic Resource
Chinese
NTRS | 1984
|Close Lightning Electromagnetic Environment for Aircraft Testing
SAE Technical Papers | 2001
|The Field Marshal electromagnetic simulation environment
IEEE | 2005
|