| AERODYNAMIC FORCES ACTING ON AN ALBATROSS FLYING ABOVE SEA-WAVES |
| |
| 作者姓名： | 盛其虎 吴德铭 张亮 |
| |
| 作者单位： | College of Shipbuilding Engineering，Harbin Engineering University，Harbin 150001，P.R.China，College of Shipbuilding Engineering，Harbin Engineering University，Harbin 150001，P.R.China，College of Shipbuilding Engineering，Harbin Engineering University，Harbin 150001，P.R.China |
| |
| 基金项目： | Project supported by the National Natural Science Foundation of China （ No. 50279004） and the National Hi-Tech Research and Development Program of China （863 Program ） （ No. 2002AA516010） |
| |
| 摘 要： | IntroductionIt was observed long time ago that the large sea bird such as albatross has excellent flightskills.The albatross can keep its soaring for a long time even in rough sea without flappingwings.This problemwas discussed byWood C.J.1].He supposed …
|
| 关 键 词： | 空气动力学 不稳定性 信天翁 飞行技巧 海平面 |
| 文章编号： | 0253-4827（2005）09-1222-08 |
| 收稿时间： | 2003-08-10 |
| 修稿时间： | 2005-04-05 |
Aerodynamic forces acting on an albatross flying above sea-waves |
| |
| Sheng Qi-hu,Wu De-ming,Zhang Liang.AERODYNAMIC FORCES ACTING ON AN ALBATROSS FLYING ABOVE SEA-WAVES[J].Applied Mathematics and Mechanics(English Edition),2005,26(9):1222-1229. |
| |
| Authors: | Sheng Qi-hu Wu De-ming Zhang Liang |
| |
| Affiliation: | College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, P. R. China |
| |
| Abstract: | Numerical investigation on the dynamic mechanism has been made for an albatross to fly effectively near sea surface. Emphasizing on the effect of the sea wave, the albatross is simplified as a two-dimensional airfoil and the panel method based on the potential flow theory is employed to calculate the wave effect on the aerodynamic forces. The numerical results have been presented for the states of flying at different constant speeds with constant heights above sea level, and flying at different constant speeds with the combined oscillations of pitching and free heaving. It is shown that the albatross flight efficiency depends on not only the speed and height of flight but also the wave amplitude and the wavelength. The albatross benefits by wave effect to get thrust, so as to reduce the resistance in the circumstances of rough sea. |
| |
| Keywords: | unsteady aerodynamics panel method wave effect albatross |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《应用数学和力学(英文版)》浏览原始摘要信息 |
|
点击此处可从《应用数学和力学(英文版)》下载全文 |
