지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 발행연도
- 2015
- 저작권
- 군산대학교 논문은 저작권에 의해 보호받습니다.
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이 논문의 연구 히스토리 (5)
2020
2015
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- 연관 학술논문 또는 학술발표를 통해 보다 발전된 연구결과를 확인하실 수 있습니다.
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In this study, an idea about design of blade chord and attachment angle to which Betz''s limitation and Schmitz’ theory are applied is presented. Also, the torque acting on the rotating surface, the thrust acting in the flap direction of the blade, and the pitching moment of the blade are expressed in a vector diagram using the lift and drag generated from the airfoil of the rotating blade, and the method to calculate these values is presented. A blade is designed dividing it into 16 elements in the longitudinal direction utilizing the method presented, and the characteristics of the divided elements are compared with each other by quantitatively calculating the torque, thrust and pitching moment. The magnitude of such force is comparatively analyzed for the new airfoil KA2 and different airfoils.
For the aerodynamics of the airfoils reviewed, Xfoil widely known as an airfoil analysis program is utilized. The angle of attack is constant below the rated wind speed as the tip speed ratio is constant, and the angle of attack changes at an excessive wind speed as the tip speed ratio changes. Such a change in the angle of attack causes the force acting on the airfoil to change. The dynamic properties of each force is analyzed based on the changing wind speed and the change in the angle of attack, and, in order to objectively grasp the dynamic properties of the blades designed based on KA2 and different airfoils, they are compared by calculating the standard deviation. Also, we have checked the output characteristics of a wind turbine on which the rated design specification and application environment are reflected.
For the aerodynamics of the airfoils reviewed, Xfoil widely known as an airfoil analysis program is utilized. The angle of attack is constant below the rated wind speed as the tip speed ratio is constant, and the angle of attack changes at an excessive wind speed as the tip speed ratio changes. Such a change in the angle of attack causes the force acting on the airfoil to change. The dynamic properties of each force is analyzed based on the changing wind speed and the change in the angle of attack, and, in order to objectively grasp the dynamic properties of the blades designed based on KA2 and different airfoils, they are compared by calculating the standard deviation. Also, we have checked the output characteristics of a wind turbine on which the rated design specification and application environment are reflected.
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