基于多点约束的大展弦比机翼静气动弹性计算

黄炜; 陆志良; 唐迪; 郭同庆

doi:10.13700/j.bh.1001-5965.2014.0015

基于多点约束的大展弦比机翼静气动弹性计算

doi: 10.13700/j.bh.1001-5965.2014.0015

南京航空航天大学航空宇航学院, 南京 210016

基金项目: 国家自然科学基金资助项目(11372135);江苏高校优势学科建设工程资助项目

详细信息

中图分类号: V211.3
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出版历程
- 收稿日期: 2014-01-14
- 网络出版日期: 2014-12-20

MPC based static aeroelastic numerical method for high aspect ratio wing

Colleg of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

摘要

摘要: 基于雷诺平均N-S方程和多块结构网格技术计算大展弦比机翼的气动力.机翼采用梁模型结构,利用有限元方法计算结构变形.建立基于多点约束(MPC,Multi-Point Constrain)的气动、结构数据的双向传递方法.采用MPC数据插值方法快捷地实现自主研发的计算流体力学(CFD,Computational Fluid Dynamics)程序和NASTRAN计算结构力学(CSD,Computational Structural Dynamics)软件的耦合计算,发展出可以考虑结构非线性的静气动弹性CFD/CSD耦合计算方法,该方法比只考虑单方向变形的柔度法更精确.开展了某大展弦比机翼的静气动弹性数值计算分析,结果显示只考虑机翼纵向变形而忽略展向变形对计算结果会有一定影响,而该算例几何非线性影响较小.
- 大展弦比机翼 /
- 有限元方法 /
- N-S方程 /
- 静气动弹性 /
- 多块结构网格
Abstract: The steady aerodynamic loads were calculated with N-S equations and the multi-block structured grid technique was used to improve the computational efficiency. A beam model was applied to a high aspect ratio wing, and its structural deformations were evaluated by the finite element method with or without geometry nonlinearity. A multi-point constrain (MPC) method was used for the information exchange between the aerodynamic loads calculations and the structure deformations calculations. The static aeroelasticity was further considered. By successive iterations between self-developed computational fluid dynamics (CFD) solver and NASTRAN computational structural dynamics (CSD) software based on the MPC interpolation method, a quick and accurate coupled CFD-CSD method was achieved for the nonlinear static aeroelastic problem. Obviously the present method is more accurate than the conventional flexibility approach only considering single-direction deformation. Numerical analysis of a high aspect ratio wing demonstrates that spanwise deformation would have certain influence on its static aeroelastic characteristics and that geometric nonlinearity has small effect on this common airliner wing.
- high aspect ratio wing /
- finite element method /
- N-S equations /
- static aeroelasticity /
- multi-block structured grid

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参考文献(16)

[1]	马铁林,马东立,张华.大展弦比柔性机翼气动特性分析[J].北京航空航天大学学报,2007,33(7):781-784 Ma Tielin,Ma Dongli,Zhang Hua.Aerodynamic characteristic analysis of high-aspect ratio elastic wing[J].Journal of Beijing University of Aeronautics and Astronautics,2007,33(7):781-784(in Chinese)
[2]	谢亮,徐敏,安效民,等.基于径向基函数的网格变形及非线性气动弹性时域仿真研究[J].航空学报,2013,34(7):1501-1511 Xie Liang,Xu Min,An Xiaomin,et al.Research of mesh deforming method based on radial basis functions and nonlinear aeroelastic simulation[J].Acta Aeronautica et Astronautica Sinica,2013,34(7):1501-1511(in Chinese)
[3]	Harder R L,Desmarais R N.Interpolation using surface splines[J].Journal of Aircraft,1972,9(2):189-191
[4]	Liu F,Cai J,Zhu Y,et al.Calculation of wing flutter by a coupled fluid-structure method[J].Journal of Aircraft,2001,38(2):334-342
[5]	Smith M J,Hodges D H.Evaluation of computational algorithms suitable for fluid-structure interactions[J].Journal of Aircraft,2000,37(2):282-294
[6]	Goura G S L,Badcock K J,Woodgate M A,et al.A data exchange method for fluid-structure interaction problems[J].Aeronautical Journal,2001,105(1046):215-221
[7]	徐敏,陈士橹.CFD/CSD耦合计算研究[J].应用力学学报,2003,21(2):33-36 Xu Min,Chen Shilu.Study of date exchange method for coupling computational CFD/CSD[J].Chinese Journal of Applied Mechanics,2003,21(2):33-36(in Chinese)
[8]	Wendland H.Computational aspects of radial basis function approximation[J].Studies in Computational Mathematics,2006,12:231-256
[9]	Wendland H.Piecewise polynomial,positive definite an compactly supported radial basis functions of minimal degree[J].Adv Comput Math,1995,4:389
[10]	Frank R.Scattered data interpolation:tests of some methods[J].Math Comp,1982,38:191
[11]	杨国伟,郑冠男.基于静气动弹性效应的飞机型架外形修正方法研究[J].航空工程进展,2011,2(2):143-150 Yang Guowei,Zheng Guannan.Aircraft jig shape correction method based on static aeroelastic analyses[J].Advances in Aeronautical Science and Engineering,2011,2(2):143-150(in Chinese)
[12]	林言中,陈兵,徐旭.基于径向基函数插值的气动弹性计算方法[J].北京航空航天大学学报,2013,39(1):1-7 Lin Yanzhong,Chen Bing,Xu Xu.Numerical method of aeroelasticity based on radial basis function interpolation[J].Journal of Beijing University of Aeronautics and Astronautics,2013,39(1):1-7(in Chinese)
[13]	曲晓锐,钱才富.多点约束(MPC)法与换热器整体有限元分析[J].压力容器,2013,30(2):54-58 Qu Xiaorui,Qian Caifu.Multipoint constrain method and finite element analysis of whole heat echangers[J].Pressure Vessel Technology,2013,30(2):54-58(in Chinese)
[14]	Huang W,Lu Z L,Guo T Q,et al.Numerical method of static aeroelastic correction and jig-shape design for large airliners[J].Science China,2012,55(9):2447-2452
[15]	谢长川,吴志刚,杨超.大展弦比柔性机翼的气动弹性分析[J].北京航空航天大学学报,2003,29(12):1087-1090 Xie Changchuan,Wu Zhigang,Yang Chao.Aeroelastic analysis of flexible large aspect ratio wing[J].Journal of Beijing University of Aeronautics and Astronautics,2003,29(12):1087-1090(in Chinese)
[16]	徐敏,史志军,陈士橹.一种流体-结构耦合计算问题的网格数据交换方法[J].西北工业大学学报,2003,21(5):532-535 Xu Min,Shi Zhijun,Chen Shilu.A suitable method for transferring information between CFD and CSD grids[J].Journal of Northwestern Poly Technical University,2003,21(5):532-535(in Chinese)