| 充气结构与流场的耦合求解方法 |
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| 引用本文： | 蒋跃文,叶正寅,张正科.充气结构与流场的耦合求解方法[J].力学学报,2010,42(1):1-7. |
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| 作者姓名： | 蒋跃文 叶正寅 张正科 |
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| 作者单位： | 西安市友谊西路127号翼型叶栅空气动力学重点实验室217室西北工业大学翼型、叶栅国防科技重点实验室西北工业大学翼型、叶栅国防科技重点实验室 |
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| 基金项目： | 西北工业大学博士论文创新基金;;翼型叶栅实验室重点基金;;国家863计划(2007AA11Z243)资助项目~~ |
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| 摘 要： | 针对一种充气前缘(inflatable leading edge, ILE)增升技术，建立了其充气结构与流场耦合作用的运动方程. 将方程写成状态空间形式，采用时域推进方法求解. 对使用了变前缘增升技术的NACA63-212翼型进行了充气结构静变形的数值计算，结果表明充气结构的刚度对翼型的气动特性有明显影响. 与原翼型相比，在不考虑充气结构变形时, 该增升技术大约能使翼型的失速迎角增加30{\%}，最大升力系数增加22{\%}；考虑结构变形后增升效果有所降低. 刚度较低的薄膜在前缘吸力峰的作用下会隆起形成鼓包，容易引起流动分离.
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| 关 键 词： | 充气结构 结构运动方程 耦合求解 时域推进 |
| 收稿时间： | 2008-06-18 |
MODEL OF INFLATABLE STRUCTURE/FLUID INTERACTION FOR VARIABLE LEADING EDGE |
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| Jiang Yuewen
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Ye Zhengyin
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Zhang Zhengke.MODEL OF INFLATABLE STRUCTURE/FLUID INTERACTION FOR VARIABLE LEADING EDGE[J].chinese journal of theoretical and applied mechanics,2010,42(1):1-7. |
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| Authors: | Jiang Yuewen Ye Zhengyin Zhang Zhengke |
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| Institution: | National Key Laboratory of Aerodynamic Design and Research, Northwestern Polytechnical University, Xi'an, 710072, ChinaNational Key Laboratory of Aerodynamic Design and Research, Northwestern Polytechnical University, Xi'an, 710072, ChinaNational Key Laboratory of Aerodynamic Design and Research, Northwestern Polytechnical University, Xi'an, 710072, China |
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| Abstract: | The paper presents the interactive motion equation of inflatable structure in flow.The inflatable structure is used in the technique of a variable leading edge for high lift.The interaction between structure and fluid is a typically aeroelastic problem.The motion equation is obtained through the analytic solution of an infinitesimal element in the discrete membrane.Coupled with Navier-Stokes equation,the aeroelastic equation was solved with time-marching methods,and the aerodynamic characteristics of NACA 6... |
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| Keywords: | inflatable structure aeroelastic equation coupled solution time-marching |
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