【摘要】 对射流喷管内/外流场进行了数值计算。数值解法由未分裂显式马考马克有限差分格式完成,应用时间光滑处理、快速解法及局部子循环法提高高雷诺数流动的计算效率。所有的边界条件使用参考平面特征格式计算,将粘性项作为源项处理。更多还原

【Abstract】 The two-dimensional, time-dependent Navier-Stokes equations are solved for subsonic, transonic and supersonic flows of the jet-powered nozzle frame with a dual-flowing stream; Numerical solution of these equations is accomplished with the unsplit explicit finitedifference algorithm of MacCormack. A grid subcycling procedure, quick solver and extended interval time-smoothing options are used to improve computational efficiency for high Reynolds number flows. All boundary conditions are calculated using a reference plane characteristic scheme with the viscous terms treated as source terms.更多还原