细长体简谐振动绕流的数值模拟  

Numerical Simulation of Compressible Flow over a Pitching Slender Body

作　　者：李锋[1] 周伟江[1] 王强[1] 汪翼云[1] 

机构地区：[1]北京空气动力研究所,北京100074

出　　处：《空气动力学学报》1997年第1期114-120,共7页Acta Aerodynamica Sinica

摘　　要：用数值模拟方法研究了椭圆锥细长体简谐振动（模拟飞行器的曲线机动飞行）非定常过程的流场特性。数值模拟的出发方程是可压缩流的全N－S方程，计算格式为TVD格式。数值模拟中，研究了细长体简谐振动绕流的非定常流场特性、不同振动缩减频率和压缩性效应的影响，揭示了非定常流场的特性和流动机理。The unsteady characteristics of flow around an oscillatingelliptical slender body are studied by numerical method. The unsteadycompressible full Navier-Stokes equations are solved by time-accurateimplicit TVD algorithm. Through the numerical simulation, the unsteadyevolution of shock and separation during the oscillation of missile arepresented. Also the effect of reduced frequency and compressibility areinvestigated.

关 键 词：非定常流 数值模拟 机动飞行 飞行力学 

分 类 号：V212.11[航空宇航科学与技术—航空宇航推进理论与工程]