系统电磁脉冲综合环境中导线响应的计算

Calculation of wires responses caused by SGEMP comprehensive environment

采用时域有限差分法(FDTD)、粒子模拟(PIC)方法和Holland细线算法,对圆柱腔体内带负载导线的系统电磁脉冲(SGEMP)综合环境响应进行了模拟。计算结果表明:导线负载上的响应电流从大到小依次由透射X射线、SGEMP场和前向电子产生;透射X射线和前向电子产生的响应电流极性相反;SGEMP场在导线负载上响应电流的极性与场分布有关;3种环境在负载上的综合响应中透射X射线的响应最大。对于腔体内的导线来说,SGEMP综合环境防护时透射X射线是重点考虑的因素。

The responses of wires in a cylinder cavity caused by system generated electromagnetic pulse （SGEMP） compre- hensive environment were simulated with FDTD, PIC methods and Holland thin line algorithm. The comprehensive environment includes transmitted X-ray, forward electrons and SGEMP field. The numerical results indicate that the biggest responses are caused by transmitted X-ray, and the smallest responses are caused by forward electrons. The response polarities of transmitted X-ray and forward electrons are opposite, and the response polarity of SGEMP field is related with the distribution of the field. Thus the transmitted X-ray would be the first concern in wires protection in the comprehensive environment.