Numerical Analysis of Helicopter Rotor Blade in Forward Flight Using Unstructured Adaptive Meshes

비정렬 적응격자 기법을 이용한 전진비행하는 헬리콥터 로터 블레이드의 수치 해석

A three dimensional inviscid parallel flow solver has been developed for the simulation of rotor blades in forward flight. The computational domain is divided into stationary and rotating zones for the more efficient mesh adaptation. The conservative mesh treatment algorithm is used for the convection of flow variables and fluxes across the sliding boundary. A deforming mesh algorithm using modified spring analogy is used for the blade motion. In the present paper, detail descriptions of numerical analysis for forward flight are introduced. Some results are presented for a two bladed AH-1G rotor and compared with experimental data.