| 微型飞行器小展弦比机翼的低雷诺数气动力特性分析 |
| |
| 引用本文： | 杨爱明,翁培奋.微型飞行器小展弦比机翼的低雷诺数气动力特性分析[J].空气动力学学报,2005,23(1):57-67. |
| |
| 作者姓名： | 杨爱明 翁培奋 |
| |
| 作者单位： | 上海大学,上海市应用数学和力学研究所,上海,200072;上海大学,上海市应用数学和力学研究所,上海,200072 |
| |
| 摘 要： | 以固定机翼式微型飞行器的气动设计为研究背景,对小展弦比薄机翼的低雷诺数气动力特性进行了数值分析.不可压粘性绕流的求解采用了人工压缩性方法,其中对流项的离散应用了三阶迎风格式.湍流模型为Baldwin-Barth一方程模型.一无弯度薄翼的数值计算结果表明本文的数值方法是成功的.通过数值分析,揭示了弯度和展弦比对气动力特性的影响,也给出了不同弯度机翼流动结构的差别.
|
| 关 键 词： | 低雷诺数 微型飞行器 小展弦比机翼 人工压缩性方法 Navier-Stokes方程 |
| 文章编号： | 0258-1825(2005)01-0057-11 |
Numerical analysis of low Reynolds number flows around thin wings for micro aerial vehicle |
| |
| YANG Ai-ming,WENG Pei-fen.Numerical analysis of low Reynolds number flows around thin wings for micro aerial vehicle[J].Acta Aerodynamica Sinica,2005,23(1):57-67. |
| |
| Authors: | YANG Ai-ming WENG Pei-fen |
| |
| Abstract: | The low Reynolds number (10~5) aerodynamic property of low-aspect-ratio wings for Micro Aerial Vehicle (MAV) applications was numerically investigated. The viscous flows around MAV wings were simulated by solving incompressible Navier-Stokes equations. The hyperbolic equations were formulated by artificial compressibility method with the convective terms discreted using a third-order upwind scheme based on Roe's approximate Riemann solver. The equations were solved using an implicit line-relaxation method with Baldwin-Barth one-equation turbulence model. Numerical results for a thin-flat wing agreed well with the experiment data. In this study the effect of aspect ratio and camber on aerodynamic character is analyzed in detail and the flow structures with different camber is also presented. |
| |
| Keywords: | low Reynolds number flow micro aerial vehicle low-aspect-ratio wings artificial compressibility method Navier-Stokes equations |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
