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针对立式绝热壁,引入了热流与强度的幂权积函数作为兼顾隔热性能和机械性能的复合优化目标,在给定外形尺寸和安全性要求的全局约束下,以该复合函数最大化为目标进行了构形优化.研究表明通过允许绝热壁内部结构自由变化(进化),能够获得一定环境条件下的最大目标值及对应的最佳内部结构设计;结果验证了热流与强度复合目标函数的合理性、有效性和适用性,且幂权参数取值在0.4与4之间能更好地兼顾隔热和强度要求.详细讨论了热流与强度并重时的构形优化及结果,给出了不同使用环境下的最优结构设计及性能分析;当使用环境的变化较大且总Rayleigh数较高时,宜采用空腔较多的绝热壁;当总Rayleigh数较小时,合理选用空腔较少的绝热壁,能获得更好的性能.复合目标具有良好的自适应性,最近文献结果是本文研究的特例.
For the vertical thermal insulation wall, the power-weighted product of heat flux and strength is introduced as a composite optimization target which balances the thermal insulation performance and the mechanical performance. Under the global constraints of the dimension and safety requirements, the complex function is maximized to The goal is to make the shape optimization.The research shows that by allowing the internal structure of the thermal insulation wall to freely change (evolve), the maximum target value under certain environmental conditions and the corresponding optimal internal structure design can be obtained.The results verify that Rationality, validity and applicability, and the power parameter values between 0.4 and 4 can better meet the requirements of thermal insulation and strength.Considering the configuration optimization and the results when the heat flux and the strength are equal, Optimal structural design and performance analysis under different operating environments. When the environment changes greatly and the total Rayleigh number is high, it is advisable to use more insulating walls with more cavities. When the total Rayleigh number is small, Less thermal insulation wall, can get better performance.Composite target has a good adaptability, the recent literature is a special case of this study.