一种自适应差分进化算法及其在空间堆智能设计中的初步应用  

An adaptive DE algorithm and its preliminary application in intelligent design of space reactor

作　　者：方力 陈春花[1] 周文 杨子辉 汪建业[1] FANG Li;CHEN Chunhua;ZHOUWen;YANG Zihui;WANG Jianye(Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230027,China)

机构地区：[1]中国科学院合肥物质科学研究院,合肥230031 [2]中国科学技术大学,合肥230027

出　　处：《核技术》2021年第5期89-94,共6页Nuclear Techniques

基　　金：安徽省自然科学基金(No.2008085MA23)资助。

摘　　要：空间堆具有广阔的应用前景,对其结构的优化设计有着极高的经济和技术应用价值。但空间堆结构优化设计中变量耦合度高、设计复杂,人工求解过程低效耗时,且往往得不到最优解。以经典差分进化(Differential Evolution,DE)算法为基础,提出了一种自适应的DE算法。通过对控制参数采取动态调整的策略,平衡全局和局部搜索能力,达到加强算法寻优能力的目的。最后对热功率为4.3 kW的Kilopower空间堆模型进行优化,以结构参数为变量,以堆芯质量为目标函数,同时结合中子输运设计与安全评价软件系统SuperMC进行中子输运计算。在满足设计要求的前提下,优化后Kilopower空间堆堆芯质量可降低38.2%,证明了自适应DE算法的正确性和有效性。[Background]The space reactor has broad application prospects,and its structure optimization design has an extremely high economic and technical application value.Due to the high coupling degree of variables and complex design in the optimal design of the space nuclear reactor structure,the manual solution process is inefficient and time-consuming,and the optimal solution is hard to achieve.[Purpose]This study aims to propose an optimal algorithm for structure design of space reactor.[Methods]An adaptive differential evolution(DE)algorithm based on the classic DE algorithm was proposed.The strategy of balancing global and local search capabilities by dynamically adjusting the control parameters was adopted to enhance the algorithm optimization ability.Finally,with structural parameters as variables and the core quality as objective function the Kilopower reactor model with a thermo power of 4.3 kW was optimized,and the neutron transport was calculated by combing the neutron transport design and safety evaluation software SuperMC simultaneously.[Results]The core quality of the optimized space reactor was reduced by 38.2% when the design requirements were met.[Conclusions]The correctness and effectiveness of the adaptive DE algorithm proposed in this paper are verified in the design of space reactor core.

关 键 词：差分进化算法 自适应 堆芯优化 Kilopower 

分 类 号：TL329.2[核科学技术—核技术及应用]