二维地效翼及地效流动特性数值研究

计算物理 ›› 2009, Vol. 26 ›› Issue (2): 231-240.

二维地效翼及地效流动特性数值研究

杨韡, 杨志刚

同济大学上海地面交通工具风洞中心, 上海 201804

收稿日期:2007-12-03 修回日期:2008-05-26 出版日期:2009-03-25 发布日期:2009-03-25
作者简介:杨韡(1980-),male,Weifang,Shandong,Ph．D,engaged in fields of aerodynamics.

Aerodynamic Investigation of a 2D Wing and Flows in Ground Effect

YANG Wei, YANG Zhigang

Shanghai Automotive Wind Tunnel Center, Tongji University, Shanghai 201804, China

Received:2007-12-03 Revised:2008-05-26 Online:2009-03-25 Published:2009-03-25

摘要/Abstract

摘要： 用数值模拟的方法,对二维NACA0012翼型在地面效应下的空气动力特性和地效流动特性进行研究,得到地效翼的升力、阻力和翼型表面压力分布随攻角及相对飞行高度的变化情况.通过对计算结果的分析,可以看出,在一定的攻角,靠近地面飞行,机翼的升力得到提高;随着飞行高度的降低,地面效应增强,机翼的失速攻角减小;地面附近的粘性流动对机翼的空气动力特性影响很小;当相对飞行高度小于0.1时,应该考虑空气的可压缩性.

关键词: 地效翼, 空气动力, 粘性效应, 可压缩性

Abstract: A numerical investigation is performed to study aerodynamics of a 2D NACA0012 wing and flows in ground effect (IGE). Lift and drag forces are obtained and pressure distribution on airfoil surfaces is recorded at different angles of attack and ground clearances. Viscous flow near ground and air compressibility are taken into account. High lift is obtained as the airfoil is in dose proximity to the ground. The stall angle decreases with reduction of the ground clearance, due to higher adverse pressure gradient. Viscous effect of floor shows less effect on airfoil. Compressibility should be taken into account at lower ground clearances.

Key words: wing in ground effect, aerodynamics, viscous effect, compressibility

中图分类号:

杨韡, 杨志刚. 二维地效翼及地效流动特性数值研究[J]. 计算物理, 2009, 26(2): 231-240.

YANG Wei, YANG Zhigang. Aerodynamic Investigation of a 2D Wing and Flows in Ground Effect[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2009, 26(2): 231-240.

[1]	李馨东, 赵英奎, 欧阳碧耀, 胡宗民, 姜宗林. 气体体积粘性对二维环形激波聚焦的影响[J]. 计算物理, 2017, 34(4): 394-402.
[2]	沙文钰, 潘玉萍, 朱首贤, 王巨华, 葛苏放, 蔡美琼. 一种新的海面空气动力学粗糙度方案[J]. 计算物理, 2008, 25(6): 725-732.
[3]	詹浩, 白俊强, 段卓毅, 华俊. 基于遗传算法和分布式计算的气动优化设计[J]. 计算物理, 2004, 21(4): 359-362.
[4]	秦丰华, 孙德军, 尹协远. 微管道气体流动的蒙特卡洛直接模拟[J]. 计算物理, 2001, 18(6): 507-510.
[5]	姜乐华, 谷正气, 张丕付, 黄天泽. 基于车身外形CAD数据的表面气动网格生成[J]. 计算物理, 1999, 16(6): 675-681.
[6]	乐贵高, 马大为. 收缩螺旋涡线诱导速度的快速收敛法[J]. 计算物理, 1997, 14(3): 283-289.
[7]	杨树礼. 二维空气动力学方程组分三片Riemann问题的数值解(Ⅰ)初值分布只含接触间断[J]. 计算物理, 1995, 12(3): 341-348.