摘要
针对蒙特卡洛法计算太阳辐照试验中光谱模拟器阵列辐照度时间过长的问题,基于解析法提出光谱模拟器辐照度的快速计算方法,建立单个光谱模拟器的等效面光源温度分布模型,利用辐射传热定律建立关于面光源各离散点温度的线性方程组,求解得到等效面光源的温度分布,实现具有复杂反射屏光谱模拟器的辐射传热模型简化。进一步利用等效面光源计算光谱模拟器阵列在单温区和多温区下的辐照度分布,将面光源和辐照面分别离散化为光源点和接收点,逐点计算辐照面各点接收到的辐照度,计算结果证明等效面光源代替光谱模拟器计算辐照度具有一定的可行性。
The Monte-Carlo method is used to calculate irradiance distribution of spectral simulator array for solar irradiation test,which calculation time is too long.The fast calculation method of spectral simulator irradiance is obtained based on the analytical method.Temperature distribution model of equivalent surface light source is established for a single spectral simu-lator.By radiation heat transfer laws establish linear equations about each discrete point temperature of surface light source.Temperature is obtained of equivalent surface light source.Radiation heat model is simplified of spectrum simulator with complex reflection screen.Further,the irradiance distribution is calculated of spectral simulator array in the single and multi-temperature regions by using the equivalent surface light source.The surface light source and the irradiated surface are discredi-ted into light source point and receiver receiving point.The irradiance is calculated at each received point of irradiance surface.It confirmed the feasibility of equivalent surface light source instead of spectral simulator in calculating the irradiance.
作者
李昕昕
张肖肖
丛琳华
Li Xinxin;Zhang Xiaoxiao;Cong Linhua(National Key Laboratory of Strength and Structural Integrity,Aircraft Strength Research Institute of China,Xi'an,Shaanxi,710065,China)
出处
《飞行器强度研究》
2023年第2期28-35,共8页
Aircraft Strength Research
关键词
光谱模拟器阵列
等效面光源
辐照度分布
太阳辐照试验
spectrum simulator array
equivalent surface light source
irradiance distribution
solar rradiation test
