旋翼近地飞行时尾迹及地面涡的N─S方程模拟

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1996, Vol. 17 ›› Issue (S1): 8-13.

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NAVIER STOKES CALCULATIONS OF WAKE AND GROUND VORTEX INDUCED BY A ROTOR IN FORWARD FLIGHT WITH GROUND EFFECTS

Kang Ning, Sun Mao

Fluid Mechanics Institute, Beijing University of Aeronautics and Astronautics, Beijing, 100083

Received:1996-01-25 Revised:1996-04-22 Online:1996-11-25 Published:1996-11-25

Abstract

Abstract: A finite volume method is used to solve the 3 D Navier Stokes equations to imitate the flow field and performance characteristics of a rotor in a forward flight near the ground. The rotor is modeled as a distribution of momentum sources, the strengths of which are determined from an iterative manner of calculating the local flow field properties, the rotor geometry and the aerodynamic characteristics of the blade cross section. The disturbance of wake with the ground and the phenomenon of the ground vortex are investigated for several advance ratios and flight heights.

Key words: rotor aerodynam ics, ground effects, finite volume method

CLC Number:

Kang Ning;Sun Mao. NAVIER STOKES CALCULATIONS OF WAKE AND GROUND VORTEX INDUCED BY A ROTOR IN FORWARD FLIGHT WITH GROUND EFFECTS[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1996, 17(S1): 8-13.

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NAVIER STOKES CALCULATIONS OF WAKE AND GROUND VORTEX INDUCED BY A ROTOR IN FORWARD FLIGHT WITH GROUND EFFECTS

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