摘要
运用计算流体力学(CFD)数值工具研究旋翼机身发动机空气动力干扰.通过生成多块贴体网格,运用有限体积方法直接求解了不可压N-S方程.分析了某直升机低速前飞时的流场性质.首先对孤立机身周围粘性流场进行数值模拟,然后运用作用盘模型分析了旋翼机身空气动力干扰对机身压力分布等方面的影响;最后运用简单的发动机模型分析了发动机进出口对直升机流场的影响.
The rotor-fuselage engine aerodynamic interactions were studied using corn putational fluid dynamics numerical tools. The body-fitted structural grid was generated through multi-block grid technique. The finite volume method was adopted and incompressible Navier-Stokes equation was solved. The flow field and performance of the helicopter in forward flight were analyzed. Firstly, the accuracy of viscous simulation was investigated for the isolated fuselage configuration. Then, the rotor-fuselage aerodynamic interactions using the actuator disk model were obtained by discussing the influence of rotor on fuselage pressure distribution. Finally, the effect of the helicopter engine inlet and outlet was analyzed using a simplified engine model and the rotor-fuselage engine interactions were obtained.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2008年第10期1882-1887,共6页
Journal of Aerospace Power
关键词
数值模拟
旋翼机身
作用盘
发动机进出口
前飞
numerical simulation
rotor-fuselage-engine
actuator disk
engine inlet and outlet
forward flight
