基于环量控制后缘尺寸大小对机翼气动效率影响研究

The Influence of the Size of the Trailing Edge on the Aerodynamic Efficiency of the Wing Is Studied Based on the Loop Control

本文提出改善翼型气动特性的方法,本文采用了环量控制翼型增升技术,运用数值模拟手段分析了一种后缘为圆弧状的环量控制机翼,研究了在翼型后缘尺寸不同的条件下三维机翼气动特性的变化。对其不同攻角下机翼的气动力特性、漩涡结构等进行了研究。通过对数值仿真结果进行分析,对比升力、阻力、升阻比和压力。速度云图结果表明随着翼型后缘圆弧尺寸改变,整体三维机翼的气动效率发生变化。后缘尺寸偏小、圆弧趋于完整的圆机翼的气动效率越好。

In this paper, a method to improve the aerodynamic characteristics of airfoil is proposed. In this paper, the loop-controlled airfoil lifting technology is adopted in the study. Numerical simulation means are used to analyze the aerodynamic characteristics of a three-dimensional airfoil with an arc-shaped trailing edge under the conditions of different dimensions of the trailing edge. The aerodynamic characteristics and vortex structure of the wing under different angles of attack are studied. By analyzing the numerical simulation results and comparing the lift force, drag force, lift-drag ratio, pressure and velocity cloud diagram, the results show that as the size of the trailing edge of the airfoil changes, the aerodynamic efficiency of the overall three-dimensional wing changes. The aerodynamic efficiency of the circular wing with smaller trailing edge size and more complete arc is better.