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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.