纵向大扰动方程的变参数型变分裂法

 本文用变参数型变分裂法,解定常跨音速纵向大扰动方程。计算翼型气动力。对变参数型变分裂法以及它的参数选取方法作了必要的介绍。对NACA0012翼型,M_∞=0.8,α_A=0°;M_∞=0.95,α_A=0°;M_∞=0.75,α_A=1°,进行了计算。所得结果与其它结果进行了比较,表明本方法是快速收敛的、可靠的。

A TYPE-DEPENDENT SPLITTING SCHEME WITH VARIABLE PARAMETERS FOR THE LONGITUDINAL LARGE-DISTURBANCE POTENTIAL EQUATION

A steady-state transonic potential equation with large disturbance in the longitudinal direction is solved by using a type-dependent splitting scheme with variable parameters, in which different splitting schemes are adopted in supersonic or subsonic region. Selection rules for parameters are also discussed. Some numerical examples of transonic flows over NACA 0012 airfoil are presented. The results are compared with the available data. The results indicate that the present scheme is reliable and its convergence is comparatively fast.