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基于超薄多层介质诱饵温度沿壁厚方向相同的假设,根据质量与能量守恒原理并结合多层介质材料的热物性及厚度参数,推导了多层介质等效为单层介质材料的热物性参数。考虑了热传导、太阳和地球对空间自旋及三轴稳定目标的加热、目标外表面辐射散热和内壁面元间的辐射换热,根据节点网络法建立了传热差分方程,并利用Gauss-Seidel迭代法求解目标表面温度分布随时间的变化。该方法将超薄多层介质诱饵的三维导热计算问题简化为二维导热计算,极大地提高了计算速度。研究结果表明:轻诱饵目标在空间中很快达到平衡状态;在地球阴影区与日照区,平衡温度差异很大;自旋使目标温度在圆周方向趋于均匀。
Based on the assumption that bait temperature along the wall thickness is the same for ultrathin multilayer media, the thermal properties and the thickness parameters of multi-layered dielectric materials are derived according to the principle of conservation of mass and energy. parameter. Considering the heat conduction, the heating of the space and the three-axis steady target by the sun and the earth, the radiative heat transfer between the target outer surface and the inner surface, the heat transfer difference equation is established according to the node network method. Gauss-Seidel Iteration method to solve the target surface temperature distribution over time. The method simplifies the three-dimensional thermal calculation of the ultrathin multi-layer media bait into two-dimensional thermal conductivity calculation, which greatly improves the calculation speed. The results show that the target of light bait reaches the equilibrium quickly in the space, and the difference of equilibrium temperature is great in the shadow area and sunshine area of the earth. The spin makes the target temperature become uniform in the circumferential direction.