旋翼飞机船舶降落气流场数值计算研究  

Numerical Study of the Flow Field During the Process of Rotorcraft Ship Landing

作　　者：朱鑫 陈昱希 张祥瑞 顾璇[2] ZHU Xin;CHEN Yuxi;ZHANG Xiangrui;GU Xuan(Marine Design&Research Institute of China,Shanghai 200011,China;Harbin Engineering University,Haerbin 150001,China)

机构地区：[1]中国船舶工业集团公司第七○八研究所,上海200011 [2]哈尔滨工程大学,哈尔滨150001

出　　处：《兵器装备工程学报》2021年第S02期49-54,共6页Journal of Ordnance Equipment Engineering

摘　　要：本文采用基于格子玻尔兹曼方法的大涡模拟,模拟了不同风速、风向角作用下旋翼飞机在船舶平台降落过程中影响其可靠性的气流场特性和机身受力状况。结果表明:降落过程中随着来流风速增大,主旋翼升力和主旋翼下洗气流速度随之增大,下洗气流在竖直方向上的影响范围减少;旋翼飞机主旋翼的单向转动产生不对称流场,引起机身两侧受力不均,合力方向指向机身右侧;当旋翼飞机机身距离停机坪4.5 m以上时,旋翼飞机各向受力按一定时间间隔波动,在距离停机坪0.5 m以下时,会受到突增的指向右侧的侧向力。This paper usedlarge Eddy simulation based on lattice Boltzmann method to numerically simulate the flow field characteristics and fuselage stress conditions of rotorcraft which affect its reliability during ship landing under different wind speeds and wind angles.The results shows that during landing,with the increase of incoming wind speed,the main rotor lift and main rotor downwash flow velocity increases and the influence range of downwash flow in the vertical direction decreases;the one-way rotation of the main rotor of a rotorcraft produced an asymmetric flow field,resulting in uneven stress on both sides of the fuselage and the resultant force direction points to the right side of the fuselage.When the fuselage of the rotorcraft is more than 4.5m away from the apron,the forces on the rotorcraft fluctuate at a certain time interval.When it is less than 0.5m away from the apron,it will be subjected to a sudden increase of lateral force pointing to the right.

关 键 词：旋翼飞机 可靠性 格子玻尔兹曼方法 大涡模拟 气流场 

分 类 号：V227[航空宇航科学与技术—飞行器设计]