基于束能推进的微波加热效率仿真

微波束能推进是一种新的微波能传输利用方式,使用高强度吸波材料将电磁能转化为热能。针对其热交换器系统构建了简化能量接收模型,对毫米波加热能量转换效率及最高温度进行了初步研究,并设计了三种结构进行模拟仿真,最高效率超过30%,稳定效率在23%左右。使用遗传算法对影响性能的参数进行了优化,结果表明热交换器性能受吸波材料有效损耗因子影响,应保持在一个适中的水平。

Simulation research of microwave heating efficiency for beamed energy thruster

Microwave beamed energy thruster is a kind of delivery tool using ground microwave beams to provide the energy to launch to the Earth 1st orbit from ground. The energy conversion is different with conventional microwave heating. In order to study the energy efficiency, the report gives a simple energy receiving module of thermal exchange system to simulate conversion process. Millimeter wave heating efficiency as well as maximum temperature have been analysised with the module. Further more, three fabric of exchange system was designed for 2-D simulation to explore the influence of structure. Genetic algorithm was used to optimize the parameters affecting the performance. Simulation results show that thermal exchange system performance follow with material permittivity damping which expected to be moderate. The maximum energy efficiency is over 30%, and the stabilization efficiency is around 23%.