摘要
用雷诺平均N-S方程模拟方法对翼型上下表面局部增加喷流和吹气的增升效果进行计算分析,内容包括改变喷流压比,喷流角度,舵面状态和吹气位置,以此研究吹气襟翼和喷气襟翼对翼型气动性能的影响规律。模拟结果表明:喷气增升主要通过上下翼面压力分布实现的。在一定范围内升力随喷流的压力比升高而升高;上翼面吹气可以推迟上翼面分离且吹气位置前移推迟分离效果更加明显。
The Navier-Stokes equations are carried out to simulate the effect of the blown flap and jet flap at high lift. The numerical values consists of the NPR of blowing and jet, direction of jet flow and position. Based on them, the aerodynamic performance effect of blown and jet flap on airfoil is analysed. By the numerical experiment of different jet parameters, some important characteristics are obtained. Jet can increase the lift of airfoil within some range of NPR; blowing can put off air sepreating with the position moving along.
出处
《航空计算技术》
2006年第1期100-102,共3页
Aeronautical Computing Technique
关键词
增升
喷气襟翼
吹气襟翼
lift augmentation
blown flap
jet flap
