摘要
在复杂外形流场模拟的嵌合体技术中引入守恒型MFBI算法,以改进传统嵌合体技术中子域间流场信息传递不守恒的缺陷,在标准遗传算法基础上采用分段进化的方式,同时以大迎角状态下的升力系数作为设计目标,针对基础构型的前后缘缝道参数,进行了遗传优化设计。最终的设计结果表明,相较于初始构型,其最大升力系数有明显的提升,且具有良好的失速特性。同时在增升装置嵌合体流场分析和优化设计表明,所采用的守恒型嵌合体技术,在大迎角流场优化中相较于传统的非守恒格式,具有更好的精度以及收敛特性,优化结果得到了一定的提高。
A conservative algorithm MFBI is adopted during the simulation of the complex flow situation based on the conventional chimera technique and the non-conservative problem of the information exchange between different zones is conquered.To improve the lift coefficient at the large attack angle,the subsection evolution algorithm is chosen to optimize the high-lift configure parameters.Compared to the original configuration,the optimal result shows that the lift curves,as well as CLmax,are substantially improved.During the optimization design process,when compared to the non-conservative scheme,the conservative chimera technique has a better performance on numerical exactness and convergence.
出处
《空气动力学学报》
EI
CSCD
北大核心
2011年第3期374-379,共6页
Acta Aerodynamica Sinica
关键词
增升装置
遗传优化
嵌合体技术
high-lift system
evolution design
chimera technique
