航空CFD四十年的成就与困境

Achievements and predicaments of CFD in aeronautics in past forty years

从20世纪80年代开始,基于Euler/RANS方程的CFD在航空领域得到了迅速的发展和广泛的应用,成为航空飞行器研制和空气动力学研究的重要手段。通过将论述和实例相结合的方法,综述了40年来CFD在军用和民用航空等方面取得的辉煌成就,同时也分析了其存在的不足,尤其是一直存在的艰难的瓶颈难题,即由于湍流模型能力不足导致的分离流模拟困难。对航空CFD的发展,从湍流模型和计算方法两个核心方面进行了讨论。最后给出了简要的总结和对未来发展的展望。

Euler/RANS-based CFD methods have been rapidly developed and widely used in aeronautics since the 1980s,making remarkable achievements and playing an important role in aircraft development and aerodynamic research.This article reviews the achievements of CFD in military and civil aeronautics in the past four decades and analyzes its shortcomings,particularly the problem in separation flow simulation due to the turbulence modeling.The development of aeronautics CFD is discussed from the perspectives of turbulence models and numerical schemes.Finally,a brief conclusion and suggestions on future development are presented.