摘要
螺旋桨滑流产生的加速效应、旋转效应、粘性效应等对于处于后方的进气道性能有显著的影响。基于计算流体力学方法(CFD),通过求解非定常RANS方程,采用滑移动态网格技术来模拟螺旋桨的旋转,建立考虑螺旋桨滑流的飞机进气道气动特性数值仿真方法;以某多轴式涡桨动力系统为研究对象,对螺旋桨滑流对进气道内流的影响进行分析。结果表明:在地面与起飞两个大拉力状态下,有滑流进气道出口总压恢复系数较无滑流的有所提高;而巡航状态下有滑流进气道出口总压恢复系数却降低,除地面小速度状态外,在起飞以及巡航飞行状态下,滑流会增加进气道出口总压畸变指数。
The accelerating effect,viscous effect,and rotating effect of the propeller slipstream are of significant influences on the performance of the inlet.Based on computational fluid dynamics(CFD)method,a numerical method considering the effect of propeller slipstream on the inlet is developed by using the sliding mesh technique and solving the unsteady RANS equations.A multi-axis turboprop power system is taken as an example to study the detailed influences of the slipstream on the inlet performance.The results show that in the state of on ground and takeoff,the exit total pressure recovery coefficient with slipstream is higher than that without slipstream,and the exit total pressure recovery coefficient with slipstream is lower than that without slipstream in cruise flight.Besides the ground low speed state,the slipstream can increase the exit total distortion factor of the air inlet.
作者
王利敏
张彦军
WANG Limin;ZHANG Yanjun(General Configuration Aerodynamic Institute,AVIC The First Aircraft Institute,Xi’an 710089,China)
出处
《航空工程进展》
CSCD
2020年第3期360-369,共10页
Advances in Aeronautical Science and Engineering
关键词
螺旋桨滑流
进气道
总压恢复系数
畸变系数
涡桨飞机
propeller slipstream
inlet
total pressure recovery coefficient
distortion coefficient
turboprop aircraft
