Analysis of Influencing Factors on Lift Coefficients of Autonomous Sailboat Double Sail Propulsion System Based on Vortex Panel Method
العنوان: | Analysis of Influencing Factors on Lift Coefficients of Autonomous Sailboat Double Sail Propulsion System Based on Vortex Panel Method |
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المؤلفون: | Aiqun Zhang, Zhao-yang Sun, Qian-long Jin, Jiancheng Yu |
المصدر: | China Ocean Engineering. 33:746-752 |
بيانات النشر: | Springer Science and Business Media LLC, 2019. |
سنة النشر: | 2019 |
مصطلحات موضوعية: | Airfoil, Physics, Lift coefficient, Wing, Renewable Energy, Sustainability and the Environment, Mechanical Engineering, Ocean Engineering, Propulsion, Oceanography, Pressure coefficient, Vortex, Lift (force), Offshore geotechnical engineering, Marine engineering |
الوصف: | Sail is the core part of autonomous sailboat and wing sail is a new type of sail. Wing sail generates not only propulsion but also lateral force and heeling moment. The latter two will affect the navigation status and bring resistance. Double sail can effectively reduce the center of wind pressure and heeling moment. In order to study the effect of distance between two sails, airfoil and attack angle on the total lift coefficient of double sail propulsion system, pressure coefficient distribution and lift coefficient calculation model have been established based on vortex panel method. By using the basic finite solution, the fluid dynamic forces on the two-dimensional sails are computed. The results show that, the distance in the range of 0 to 1 time chord length, when using the same airfoil in the fore and aft sail, the total lift coefficient of the double sail increases with the increase of distance, finally reaches a stable value in the range of one to three times chord length. Lift coefficients of thicker airfoils are more sensitive to the change of distance. The thicker the airfoil, the longer distance is required of the total lift coefficient toward stable. When different airfoils are adopted in fore and aft sail, the total lift coefficient increases with the increase of the thickness of aft sail. The smaller the thickness difference is, the more sensitive to the distance change the lift coefficient is. The thinner the fore sail is, the lower the influence will be on the lift coefficient of aft sail. |
تدمد: | 2191-8945 0890-5487 |
URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::006787892f18ecb3cff46a63334c7bbd https://doi.org/10.1007/s13344-019-0073-x |
حقوق: | OPEN |
رقم الأكسشن: | edsair.doi...........006787892f18ecb3cff46a63334c7bbd |
قاعدة البيانات: | OpenAIRE |
تدمد: | 21918945 08905487 |
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