Farklı geometriye sahip altı kanat profili için yüksek Reynolds sayısında ve düşük hücum açılarında (0 o ≤α≤20 o) sayısal analiz yapılmıştır. Bu çalışma rüzgar türbinleri için kanat profili tasarım projesinin bir ön çalışmasıdır. Doğada rüzgarın çok farklı yönlerden farklı hızlarda estiği gerçeği göz önüne alındığında, rüzgar türbinleri için optimize edilmiş, yüksek performans sağlayacak kanat profili tasarımına ihtiyaç olduğu görülür. Özet: Bir rüzgar türbinin verimi, kanatların üzerine doğru esen rüzgarın yönü ve hızı ile doğrudan etkilenir. Early take-off from water with about 10 knots (20 %) and decrease in power required to come over take-off resistance with about (30%) is recorded when the classic NACA section is replaced with new airfoil section. The proposed mathematical model is developed to examine the new airfoil sections as an illustrative application. An iterative computer program is structured using FORTRAN language. A mathematical model to represent the power prediction for WIG craft is developed, including a detailed analysis of the aerodynamic and hydrodynamic forces acting on the vehicle, and the effect of ground proximity. The proposed airfoil is compared with the classic airfoil NACA 4412. New airfoil section shape, suitable to operate efficiently in ground regime is designed different from classic airfoils shape. The influences of changing airfoil shape parameters such as, camber, maximum thickness and its location, angle of attack, velocity, and ground clearance on the aerodynamic efficiency are considered in ground condition. Various members of the NACA 4-digit airfoil family and other synthetic geometrical shapes are examined in this work. The commercial expert FLUENT is applied for the computational process to simulate the aerodynamic characteristics of airfoil section in ground condition. The numerical modeling and its grid are generated using the software GAMBIT. Parameters affecting aerodynamic efficiency of WIG wing are investigated in ground condition by computational fluid dynamic codes. In the present work, improving the efficiency of WIG craft is discussed throughout modifying the design of wing section. There are still many aspects of ground effect that need clarification when selecting airfoil section in ground. ![]() These craft were designed for operation in open air rather than close to a ground plane. Early WIG craft used classic wing sections such as the NACA series. Selecting or design of airfoil section is one of the most basic decisions to make in the design of a wing of WIG craft and consequently, the overall efficiency. This is due to the lack of information about its performance data and the coupled relation between hydrodynamic and aerodynamic force effects on this craft. Improving the efficiency of wing-in-ground (WIG) marine craft is challenging.
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