水利学报2018，Vol.49Issue(2)：186-194,9.DOI:10.13243/j.cnki.slxb.20170650
利用多岛遗传算法的侧式进/出水口体型优化研究
Optimization of the shape of lateral intake/outlet using multi-island genetic algorithm
摘要
Abstract
The traditional method for optimizing hydraulic structures shape is generally carried out by model test or numerical simulation to study the hydraulic characteristics,and then adjust the shape of the inlet/outlet for the unfavorable hydraulic characteristics until obtaining satisfactory shape.The shape optimization of lateral inlet/outlet under two-direction flow conditions can be regarded as multi-objective optimization problem.The multi-objective optimization is transformed into a single objective optimization problem by using weighted method,and the multi-island genetic algorithm (MIGA) is used to search the global optimal solution.The weighted head loss coefficient is defined as the objective function,and velocity uneven distribution coefficient and discharge uneven distribution coefficient of the four orifices are taken as constraints.Parametric modeling method and the approximation of response surface model based on CFD calculation,which speed up the modeling and numerical simulation in the scheme selection,improve the optimization efficiency.Compared with the original shape,total head loss coefficient is reduced by 3.35％,velocity uneven distribution coefficient is reduced by 14.50％ and discharge uneven distribution coefficient is reduced by 20％.The optimization methods provide a convenient way to optimize the shape of hydraulic structures.关键词
侧式讲/出水口/双向水流/体型优化/参数化建模/多岛遗传算法Key words
lateral intake/outlet/two flow directions/shape optimization/parametric modeling/multi-island genetic algorithm分类
建筑与水利引用本文复制引用
高学平,李建国,孙博闻,田野,张翰..利用多岛遗传算法的侧式进/出水口体型优化研究[J].水利学报,2018,49(2):186-194,9.基金项目
国家自然科学基金创新研究群体科学基金(51621092) （51621092）
天津市应用基础与前沿技术研究计划(15JCYBJC22600) （15JCYBJC22600）
