비정렬격자를 사용한 헬리콥터 로터 - 동체 상호 간섭효과 해석

Abstract

A numerical method has been developed for the analysis of interactional aerodynamics of helicopter rotor and fuselage in forward flights. A 3-D steady compressible Euler solver is used to compute flows around helicopter fuselages. The time-averaged interactional effects between the rotor and the fuselage are calculated by modeling the rotor as an actuator disk carrying pressure jumps across the plane. Unstructured mesh is used to model complex rotor-fuselage configurations. Flow around a generic configuration was calculated for validations. Good agreements with the experiment in the time-averaged velocity and pressure distributions are obtained.