三维流场乘波体快速设计方法及多目标优化

发布时间：2018-02-04 14:32

本文关键词： 乘波体激波装配法多重搜索 Pareto遗传算法 B样条　出处：《宇航学报》2016年05期 　论文类型：期刊论文

【摘要】：为扩大乘波体的设计空间,精确地计算设计流场,引入高超声速激波装配法,结合基于多重网格的搜索技术加速寻点效率,扩展流线追踪方法到三流流场,建立普适于一般三维流场的乘波体快速设计方法。对设计曲线使用B样条方法建模并提取设计变量,结合改进的Pareto遗传算法对升阻比和容积率进行多目标优化设计,获得了性能较高的乘波外形。研究表明此方法效率高,设计空间大,是一种乘波体设计的新方法和新思路。
[Abstract]:In order to expand the design space of multiplicative body and calculate the design flow field accurately hypersonic shock wave assembly method is introduced and combined with the search technology based on multi-grid to accelerate the search efficiency and extend the streamline tracing method to the three-flow field. The fast design method of wave-multiplying body is established, and the B-spline method is used to model the design curve and extract the design variables. The improved Pareto genetic algorithm is used to optimize the rise-to-drag ratio and the volume ratio, and a high performance multiplicative wave shape is obtained. The research shows that this method has high efficiency and large design space. It is a new method and new idea of wave-multiplying body design.
【作者单位】：中国航天空气动力技术研究院;
【分类号】：V211;TP18
【正文快照】： 0引言乘波体是高超声速飞行器的一种典型布局,该型飞行器在设计状态飞行时激波完全附着在前缘,下表面流动被附着激波限制没有向上表面泄露,因而升阻比高于传统布局飞行器。典型的乘波体设计方法分为两大类:正设计和反设计。正设计方法是给定基本流场,通过流动捕获管(Flow capt

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