| 筒形机翼升阻力特性的数值研究 |
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| 引用本文： | 郭正,王鹏.筒形机翼升阻力特性的数值研究[J].空气动力学学报,2009,27(4). |
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| 作者姓名： | 郭正 王鹏 |
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| 作者单位： | 国防科学技术大学航天与材料工程学院,湖南,长沙,410073 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用有限体积方法,基于多块结构化的贴体网格,求解预处理形式的NS方程,数值模拟了筒形涵道机翼的气动特性.得到了筒形涵道机翼的升力系数、阻力系数和升阻比等气动力参数,通过改变机翼外形和来流参数获得了气动特性随涵道长径比、来流迎角等参数的变化关系.计算结果表明:采用S3021翼型的筒形涵道机翼的阻力系数和升力系数随长径比的增大而减小,升阻比特性随长径比和迎角的变化均不是单调的,在长径比0.75和迎角5°时可得到较大升阻比.
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| 关 键 词： | 筒形涵道机翼 无人机 涵道风扇 气动特性 数值模拟 |
Numerical research of lift and drag properties of ring-wing |
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| GUO Zheng,WANG Peng.Numerical research of lift and drag properties of ring-wing[J].Acta Aerodynamica Sinica,2009,27(4). |
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| Authors: | GUO Zheng WANG Peng |
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| Institution: | College of Aerospace and Material engineering;NUDT;Changsha 410073;China |
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| Abstract: | A duct,also known as a ring-wing or an annular airfoil,is the main lifting surface on a lift augmented ducted fan(LADF) UAV.The aerodynamic properties of such a ring-wing is a key factor in the design of a LADF UAV.To meet this engineering requirement,flows about a series of ring-wings with different length to diameter ratio are simulated.NS equations with time derivatives preconditioned are solved using finite volume method on a multi-block boundary-conforming grid system.Lift coefficients,drag coefficient... |
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| Keywords: | ring-wing unmanned aerial vehicle lift augmented ducted fan aerodynamic property numerical simulation |
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