直升机旋翼计算流体力学的研究进展

依据直升机旋翼计算流体力学(CFD)的发展,分别介绍了小扰动位势方程、全位势方程、Euler方程和Navier—Stokes方程在旋翼流场计算中的研究现状和发展趋势,着重从方程离散、数值算法、网格生成、计算时间和计算精度等方面分析了不同旋翼CFD方法的特点,指出了旋翼的尾迹在旋翼流场计算中的重要性,并针对位势方程和Euler／N—S方程分别讨论了求解的边界条件。最后,对旋翼CFD的发展提出了几点展望。

Advances in Computational Fluid Dynamics of Helicopter Rotor

The state of the art and development tendency of computational fluid dynamics (CFD) of helicopter rotors are described, and the application of CFD methods based on the small disturbance equation, full potential equation, Euler equation and Navier Stokes equation to rotor flow problems are discussed respectively. The emphasis is placed on the description of the equation discretization, numerical algorithm, mesh generation, computational time and computational accuracy so as to show the feature of different rotor CFD methods. The importance of the rotor wake in simulating rotor flow field is pointed out and the boundary conditions used in the potential equation and Euler/N S equation solutions are discussed. Finally, the prospects on the development of the rotor CFD are pointed out.