| 飞行器跨声速气动弹性数值分析 |
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| 引用本文： | 杨国伟,钱卫.飞行器跨声速气动弹性数值分析[J].力学学报,2005,37(6):769-776. |
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| 作者姓名： | 杨国伟 钱卫 |
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| 作者单位： | 1. 中国科学院力学研究所高温气体动力学重点实验室,北京,100080
2. 中国航空总公司第一集团沈阳飞机设计研究所,沈阳,110000 |
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| 基金项目： | 国家自然科学基金资助项目(10372106)．~~ |
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| 摘 要： | 将流体和结构运动方程分别构造为含子迭代的计算格式,发展了一种紧耦合气动弹性分析方法.其中流体计算的空间离散采用改进的HLLEW(Harten—Lax-van Leer-Einfeldt-Wada)格式. TFI(transfinite inter- polation)方法用于生成随结构变形的自适应多块动网格.利用所发展的方法,对-翼-身-尾气动外形,数值预测了马赫数在0.3-1.3范围内的气动颤振边界.并详细研究了时间步长、子迭代步数、初始流场、耦合方法、疏密网格对颤振计算结果的影响.
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| 关 键 词： | 气动弹性 颤振边界 耦合算法 计算流体力学 |
| 文章编号： | 0459-1879(2005)06-0769-08 |
| 收稿时间： | 2004-08-10 |
| 修稿时间： | 2005-06-06 |
NUMERICAL ANALYSES OF TRANSONIC FLUTTER ON AN AIRCRAFT |
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| Yang Guowei,Qian Wei.NUMERICAL ANALYSES OF TRANSONIC FLUTTER ON AN AIRCRAFT[J].chinese journal of theoretical and applied mechanics,2005,37(6):769-776. |
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| Authors: | Yang Guowei Qian Wei |
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| Affiliation: | LHD of Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China;2.Shengyang Aircraft Research Institute, China Aviation Industry Corporation I, Shengyang 110000, China |
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| Abstract: | In the paper, a fully-coupled numerical method has been developed by the subiteration discretizitions of fluid and structure governing equations for transonic flutter analyses. The modified HLLEW (Harten-Lax-van Leer-Einfeldt-Wada)scheme is used for the solution of fluid equations. TFI (transfinite interpolation) technique is applied for the adaptive grid deformation. For a wing-body-stabilizer aerodynamic configuration, flutter boundaries were predicted by the developed solver in the range of Mach number from 0.3 to 1.3. Effects of various factors for the prediction of flutter boundaries, such as time-step size, subiteration number, initial flowfield, coupling algorithm, grid dependence were emphatically investigated. |
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| Keywords: | aeroelasticity flutter boundary coupled algorithm CFD |
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