摘要
本文应用偶极子网格法，数值研究矩形机翼与它三对翼梢帆片的干扰非定常气动力。数值结果表明，由于帆片的干扰效应，使翼梢区域剖面的升压系数分布发生畸变，在１／４弦长附近出现凹坑。干扰升压随振荡频率的增大而增大。在定常和低频振荡的范围内，帆片对机翼气动力的干扰贡献比帆片本身的贡献大，随着振荡频率的增大后者的贡献逐渐变得重要起来。
Using the doublet lattice method,interactive unsteadv aero-dynamic forces for rectengular wing and its three pair wing tip sails are researched in the paper. The numerical results show that due to interactive effects of wing tip sails, chordwise lift pressure distribution about quarter wing chord on wing tip region are sinking, and interactive lift pressure are on the increase with reduced frequency increase. In steady flow and low reduced frequency oscillation cases, interference contribution of sails for wing aerodvnamic forces is larger than sail themselves contribution.The importance of sail the mselves aerodynamic force contribution increases with reduced frequency increase.
出处
《空气动力学学报》
CSCD
北大核心
1994年第4期446-449,共4页
Acta Aerodynamica Sinica
