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Modal-FEM混合法对复杂终端进气道RCS的计算
RCS Calculation of Cavity with Complex Termination by Modal-FEM Hybrid Method
【摘要】 对带有复杂结构终端进气道的电磁散射问题进行了研究。给出一种高效的Modal-FEM分析方法,采用改进的模式法处理前端空腔部分,而复杂终端则只需有限元法进行一次求解;最后,在分界面上耦合得到整体的散射结果。与其他数值算法相比,计算结果表明:混合算法在保证精度的前提下减少了计算时间和所需内存,为计算带复杂终端进气道的RCS找到了一条可行的路径。
【Abstract】 Electromagnetic scattering of inlet with complex termination was analyzed. An efficient modal-FEM method was proposed, which used modal method to model forward part of the cavity, Finite Element Method to compute the complex termination once, and then coupled them on a proper boundary to get the RCS of the whole cavity. Comparing with other numerical methods, the hybrid technique is accurate and spare great computational time and storage, providing a good access to solve the RCS calculation of cavity with complex termination.
【关键词】 复杂终端;
有限元法;
模式传输法;
雷达散射截面;
【Key words】 complex termination; finite element method; modal method; RCS;
【Key words】 complex termination; finite element method; modal method; RCS;
【基金】 陕西省自然科学基础研究计划资助项目(2006F15);西北工业大学科技创新基金资助项目(2006CR11)
- 【文献出处】 系统仿真学报 ,Journal of System Simulation , 编辑部邮箱 ,2009年07期
- 【分类号】V233
- 【下载频次】79