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基于积分方程理论建立了黑体腔的结构模型,分析了腔体长径比、孔径比、接收器到腔口的距离、腔体材料本身发射率等参数对腔体发射率的影响,提出了黑体腔优化参数设计,同时,应用有限元分析法分析了不同形状黑体腔腔体对接收器稳态温度、动态响应时间的影响。研究结果表明:黑体腔结构参数的改变直接影响黑体腔发射率、接收器稳态温度、动态响应时间,进而影响黑体腔性能,积分方程法和有限元法结合分析为黑体腔研究以及优化设计提供了新思路。
Based on the theory of integral equation, the structure model of blackbody cavity is established, and the influences of cavity aspect ratio, aperture ratio, distance from receiver to cavity, emissivity of cavity material on emissivity of cavity are analyzed. At the same time, the influence of different shape blackbody cavities on steady state temperature and dynamic response time of receivers was analyzed by finite element analysis. The results show that the change of the blackbody cavity structure parameters directly affects the blackbody cavity emissivity, the receiver steady state temperature and the dynamic response time, which in turn affects the performance of the blackbody cavity. Integral equation method and finite element method combined analysis provide the blackbody cavity research and optimization design A new idea.