钝化外形对旋成体气动性能的影响  

Effect of blunt shapes on aerodynamic performance of bodies of revolution

作　　者：屈志朋[1] 崔凯[1] 胡守超[1] 李广利[1] 

机构地区：[1]中国科学院力学研究所高温气体动力学国家重点实验室,北京100190

出　　处：《计算机辅助工程》2014年第5期64-67,共4页Computer Aided Engineering

基　　金：国家自然科学基金(90916013)

摘　　要：为考察钝化外形对高超声速飞行器气动性能的影响,基于CFD分析,针对典型旋成体比较2种不同钝化外形(钝化半径均匀/非均匀)的气动性能.结果表明:在较小的钝化半径/高度下,由于前缘流向投影面积占整个旋成体流向投影面积比例较小,前缘气动性能对整个旋成体气动性能影响不大;但是,随着钝化半径/高度的增加,前缘气动性能对整个旋成体气动性能影响会逐渐增大.To study the effect of blunt shapes on the aerodynamic performance of hypersonic aircraft,based on CFD analysis,the aerodynamic performance of two different blunt shapes（ the blunt radius are uniform or non-uniform） are compared for typical bodies of revolution. The results show that,under the smaller blunt radius /height,because the projection area in flow direction of leading-edge accounts for a small proportion of the projection area in flow direction of whole bodies of revolution,the leading-edge aerodynamic performance has a little effect on the aerodynamic performance of the whole bodies of revolution; however,with the increase of blunt radius /height,the effect of leading-edge aerodynamic performance on the aerodynamic performance of whole bodies of revolution increases gradually.

关 键 词：旋成体 高超声速 飞行器 前缘 气动力 CFD 

分 类 号：V212.1[航空宇航科学与技术—航空宇航推进理论与工程]