耐高温液态金属频率选择表面流道拓扑优化设计  

Topological Optimization Design of Flow Channel for Hightemperature-resistant Liquid Metal Frequency Selective Surface

作　　者：陈尔瞻 孟文举 李鹏[1] 刘伟刚 许万业[1] CHEN Erzhan;MENG Wenju;LI Peng;LIU Weigang;XU Wanye(Xidian University,Xi’an 710071,China)

机构地区：[1]西安电子科技大学,陕西西安710071

出　　处：《电子机械工程》2022年第6期17-22,共6页Electro-Mechanical Engineering

基　　金：国家自然科学基金资助项目(51875431);陕西省自然科学基础研究计划项目(2022-JC-33);陕西省重点研发计划项目(2023-GHZD-35)。

摘　　要：面向高速飞行器的耐高温和隐身需求,提出了一种基于液态金属的具备耐高温能力的双层频率选择表面(Frequency Selective Surface,FSS)结构。首先通过粒子群优化对双层FSS进行结构优化,保证了双层FSS单元的电性能;其次以液态金属作为导电和导热工质,利用拓扑优化方法对FSS的流道结构进行优化,提高FSS的散热能力;最后针对优化前后的FSS结构进行了数值仿真,并加工样件进行了散热性能实验。仿真和实测的温度数据吻合性较好,表明拓扑优化后的双层FSS结构散热性能有明显改善。A double-layer frequency selective surface(FSS)structure based on liquid metal with high temperature resistance is proposed for the high temperature resistance and stealth requirements of high-speed aircraft.Firstly,the double-layer FSS structure is optimized by particle swarm optimization to ensure the electrical performance of the double-layer FSS unit.Secondly,the liquid metal is used as conductive and heat conducting medium,and the flow channel structure of FSS is optimized by topology optimization method to improve the heat dissipation capacity of FSS.Finally,numerical simulation is carried out for the FSS structure before and after optimization,and the heat dissipation performance of the processed samples is tested.The coincidence between simulated temperature data and measured temperature data is good,which indicates that the heat dissipation performance of the double-layer FSS structure after topology optimization is improved.

关 键 词：频率选择表面 液态金属 散热性能 拓扑优化 

分 类 号：TK124[动力工程及工程热物理—工程热物理]