弹道学报2011，Vol.23Issue(4)：56-60,5.
俯仰振荡对细长旋成体非对称流场主动控制的DES数值模拟
Numerical Study on Pitching Oscillation Flow Control Over Asymmetric Vortex Structure of Slender Revolution by Using DES
摘要
Abstract
To study the separation vortex on the leeside of slender body at the time of pitching oscillation,the RANS/LES hybrid methods based on S-A model was presented to simulate separated flow at two typical starting angles of attack.The result shows that the pitching oscillation greatly affects the flow field around slender body;the pitching oscillation obviously control the asymmetry separation vortex.While multi asymmetric vortexes at high angle of attack don＇t break down and multi asymmetric vortexes break down in turn at extremely high angle of attack,the pitching oscillation has strong control ability,and the asymmetrical flow is restrained and tends to symmetrical flow.关键词
细长旋成体/脱体涡模拟/俯仰振动/分离涡/非对称主动控制Key words
slender body/detached-eddy simulation/pitching oscillation/separation vortex/asymmetric active control分类
航空航天引用本文复制引用
夏明,李栋,宋笔锋..俯仰振荡对细长旋成体非对称流场主动控制的DES数值模拟[J].弹道学报,2011,23(4):56-60,5.基金项目
国家自然科学基金项目 （）
