| 基于非结构网格的气动弹性数值方法研究 |
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| 引用本文： | 郑赟.基于非结构网格的气动弹性数值方法研究[J].航空动力学报,2009,24(9):2069-2077. |
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| 作者姓名： | 郑赟 |
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| 作者单位： | 北京航空航天大学,能源与动力工程学院航空发动机数值仿真研究中心,北京,100191 |
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| 摘 要： | 基于非结构网格和网格变形技术,研究了耦合求解流体和弹性结构体互相作用问题的数值方法,气动弹性模型采用了耦合求解可压缩雷诺平均的Navier-Stokes方程和线性结构动力学方程的方法.为了能处理在复杂几何域内的问题,采用了基于混合单元的非结构网格有限体积方法.开发的方法在二维翼型简谐振动进行了验证并应用于AGARD 445.6翼型颤振边界的数值模拟.
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| 关 键 词： | 气动弹性 颤振 变形网格 非定常流动 |
| 收稿时间： | 7/29/2008 5:21:29 PM |
| 修稿时间： | 4/3/2009 12:00:00 AM |
Computational aeroelasticity with an unstructured grid method |
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| ZHENG Yun.Computational aeroelasticity with an unstructured grid method[J].Journal of Aerospace Power,2009,24(9):2069-2077. |
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| Authors: | ZHENG Yun |
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| Affiliation: | Beihang University, School of Jet and Propulsion, ASRC |
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| Abstract: | A computational aeroelasticity method based on unstructured grids is developed to study fluid/structure interaction problems. The aerodynamic model is based on solving the compressible Reynolds Average Navier-Stokes equation on moving grids. A nodal-centered finite volume method with mixing unstructured grids is adopted to handle complex fluid/structure problems. The structure vibration is modeled by a linear model. The structure deformation due to the aerodynamic loading is approximated by solving the structure dynamic equation and projected to the aerodynamic domain by grid deformation method. This method is validated by solving a harmonic pitching airfoil and predicting the flutter boundary of the AGARD 445.6 wing. |
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| Keywords: | aeroelasticity flutter deforming grid unsteady flow |
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