Analysis of Ground Effects on Aerodynamic Characteristics of Aerofoils Using Boundary Layer Approximation
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概要
- 論文の詳細を見る
A study of a new high-speed zero-emission transportation "Aerotrain" is being carried out in Tohoku University and the University of Miyazaki. Because the aerotrain utilizes the ground effect, research on the aerofoil section, which can harness the ground effect effectively, is important. The aerotrain moves along a U-shaped guideway, which has a ground and sidewalls, so it has many viscous interference elements. In an analysis of the ground effects on the aerodynamic characteristics of aerofoils, the boundary layers on the aerofoil surface must be considered. At first, velocity distributions on the surfaces of aerofoils in potential flows are computed using the vortex method, then the momentum integration equations of the boundary layer are solved with experimental formulas. This procedure has the following advantages: modifications of the aerofoil section are easy because it is not necessary to make complicated computational grids, boundary layer transition and separation can be predicted using empirical procedures. The aerodynamic characteristics of four types of aerofoil sections are investigated to clarify the relationship between aerofoil sections and ground effects. Computational results are compared with experimental results obtained using a towing wind tunnel to verify computational precisions. In addition, aerofoil characteristics at an actual cruise speed are analyzed.
- 2006-05-15
著者
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Kikuchi Masanori
Department Of Food Production And Utility Development Graduate School Of Dairy Science Research Raku
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Takahashi Yuji
Department Of Internal Medicine Division Of Cardiology And Memorial Heart Center Iwate Medical Unive
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HIRANO Kimitaka
Department of Mechanical Systems Engineering, University of Miyazaki
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Kikuchi Masanori
Department Of Mechanical Systems Engineering Faculty Of Engineering University Of Miyazaki
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Takahashi Yuji
Department Of Environmental And Preventive Medicine Hyogo College Of Medicine
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Takahashi Yuji
Department Of Mechanical Engineering Miyakonojo National College Of Technology
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Takahashi Yuji
Department Of Dermatology Course Of Integrated Medicine Graduate School Of Medicine Osaka University
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Hirano Kimitaka
Department Of Mechanical Systems Engineering Faculty Of Engineering University Of Miyazaki
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