Abstract
돛 요트, 패러글라이더, 또는 고공 풍력 등의 설계에 있어, 3차원 모델에 가해지는 측풍공기력을 해석하는 일은 다양한 기계의 성능을 예측하기 위해 매우 중요하다. 3차원 형상 주위의 본질적인 유동 물리를 이해하기 위하여, 본 연구에서는 간략화된 강체 모델들이 제안되었다. 자유류 속도, 받음각, 종횡비, 그리고 캠버가 독립변수로서 고려되었다. 양력과 항력 계수들은 ANSYS-CFX를 이용한 전산유체역학 해석을 통하여 계산되었고, 유동장의 후처리된 가시화 결과는 유체역학의 관점에서 해석되었다. In the design of sailing yachts, para-glider, or high-sky wind power, etc., the analysis of side-wind aerodynamic forces exerted on a cambered 3-D model is very important to predict the performance of various machinery systems. To understand the essential flow physics around the three-dimensional shape, simplified rigid-body models are proposed in this study. Four parameters such as free stream velocity, angle of attack, aspect ratio, and camber are considered as the independent variables. Lift and drag coefficients are computed with CFD technique using ANSYS-CFX, and the results with the visualization of post-processed flow fields are analyzed in the viewpoint of fluid dynamics.
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