| 基于流体力学和电磁学方程数值求解的飞行器气动隐身一体化设计 |
| |
| 引用本文： | 何开锋,钱炜祺,陈坚强,郭勇颜.基于流体力学和电磁学方程数值求解的飞行器气动隐身一体化设计[J].空气动力学学报,2009,27(2). |
| |
| 作者姓名： | 何开锋 钱炜祺 陈坚强 郭勇颜 |
| |
| 作者单位： | 1. 西北工业大学航空学院,陕西,西安,710072
2. 中国空气动力研究与发展中心,四川,绵阳,621000 |
| |
| 摘 要： | 介绍了基于流体力学和电磁学方程数值求解的飞行器气动隐身一体化设计方法.首先介绍了精度相对较高的飞行器气动和隐身特性数值计算方法,即,对于气动性能计算,求解的是结构网格上的NS方程加BL代数湍流模式;对于隐身特性计算,是用时域有限体积法来求解电磁学微分方程以获取RCS值.由于采用了高精度的数值方法,优化时单一设计点的气动性能计算和隐身性能计算变得较为耗时,因此在进行多目标遗传算法优化时本文采用了一种"少量样本计算+Kriging响应面模型建模"的优化策略.针对某类似X-47飞行器的一体化设计算例计算表明,上述设计方法是可行的,实现了优化设计中引入高精度的性能分析方法,有望提高优化结果的可信度.
|
| 关 键 词： | 气动隐身一体化设计 多目标优化遗传算法 Kriging响应面方法 |
Integrated aircraft design of aerodynamic and stealthy performance with numerically solving fluid dynamics and electro-magnetics equations |
| |
| HE Kai-feng,QIAN Wei-qi,CHEN Jian-qiang,GUO Yong-yan.Integrated aircraft design of aerodynamic and stealthy performance with numerically solving fluid dynamics and electro-magnetics equations[J].Acta Aerodynamica Sinica,2009,27(2). |
| |
| Authors: | HE Kai-feng QIAN Wei-qi CHEN Jian-qiang GUO Yong-yan |
| |
| Institution: | 1.College of aeronautics;Northwestern Polytechnical University;Xi'an 710072;China;2.China Aerodynamic Research & Development Center;Mianyang;Sichuan 621000;China |
| |
| Abstract: | In this paper,the integrated design method of aerodynamic and stealthy performance of the aircraft based on numerically solving fluid dynamics and electro-magnetics equations is investigated.At first,the numerical methods to get the aerodynamic and stealthy performance with high accuracy are introduced.That is to say,the aerodynamic performance of the aircraft is calculated by solving Navier-Stokes equations with Badwin-Lomax algebraic turbulence model on structured grid,and the RCS(Radar Cross Section) of ... |
| |
| Keywords: | integrated design of aerodynamic and stealthy performance multi-objective genetic algorithm Kriging response surface model |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
