摘要
高涵道比发动机使得飞机/发动机近距耦合,造成气动力特性恶化。本文使用CFD方法对孤立通气短舱、某型民机机翼/机身组合体以及机翼/机身/短舱组合体构型进行黏性绕流数值模拟,分析流场特征,得出短舱安装干扰阻力水平;分别改变短舱安装的前伸量、下沉量、俯仰角、内撇角等参数,研究短舱不同在翼位置对高速巡航升阻特性的影响,支持短舱在翼位置气动优化。
High bypass engines make the aircraft/engine close couple,resulting in deterioration of aerodynamic characteristic.The CFD has been used to simulate viscous flow over an isolated Through Flow Nacelle(TFN),a wing-body configuration,and the wing-body-nacelle configuration of an airplane.Based on the CFD results,interference drag due to the nacelle installation has been obtained.By varying the forward and downward positions as well as the tilt and toe angles,the influence of different nacelle positions on lift and drag characteristic has been investigated to support the aerodynamic optimization of the nacelle position.
出处
《空气动力学学报》
CSCD
北大核心
2017年第6期781-786,共6页
Acta Aerodynamica Sinica
关键词
通气短舱
CFD方法
在翼位置
干扰阻力
升阻特性
through flow nacelle
CFD method
installation position
interference drag
lift and drag characteristic
