跨声速翼型有粘／无粘强干扰计算

本文介绍一种二元跨声速激波-边界层强干扰的计算方法。边界层计算采用湍流边界层积分反方法,它借助Whitfield和Swafford提供的既适合附着流,也适合分离流的速度剖面表达式。跨声速无粘流用全速势方程模拟。通过边界上排溢速度来考虑粘性的影响,用有粘/无粘迭代得到粘性流解。本方法计算的结果与其它方法以及实验的结果进行了比较,证明该方法可以在工程上推广使用。

CALCULATION OF VISCOUS-INVISCID STRONG INTERACTION FOR TRANSONIC FLOWS OVER AEROFOILS

A method for calculations of viscous-inviscid strong interaction for transonic flows over aerofoils is presented in the present paper. The boundary layer inverse algorithm is employed for the calculation of turbulent boundary layer, with velocity profile expressions applicable to both attached and separated flows, suggested by Whitfield and Swafford. The inviscid flow is obtained by the numerical solution of fully potential equation. Viscous effects are represented by transpiration velocity at solid boundary in the inviscid calculation. The final viscous flow solution is obtained through viscous-inviscid iterations. The comparison of present results with that of other methods and experimental data demostrates that the present method can be applied to engineering purposes.