파워 효과를 고려한 덕티드 팬 시스템의 공력 해석

The aerodynamic analysis of ducted fan system was performed with the consideration of the power effect. To do this, 3D Computational Fluid Dynamics (CFD) analysis was applied according to 6 tilting angles. The propeller rotation was reproduced by Multiple Reference Frame (MRF) and Sliding Mesh (SM) techniques. From the comparison, the SM technique presented more accurate results at some tilting angles, however, the MRF was more efficient than SM because the it performs steady state calculations. Also, the duct generated more pitch up moment and drag during the tilting process in spite of the improvement of thrust.