基于CFD/CSD方法的蜻蜓柔性翼气动特性分析

孟令兵; 昂海松; 肖天航

doi:10.13224/j.cnki.jasp.2014.09.007

基于CFD/CSD方法的蜻蜓柔性翼气动特性分析

doi: 10.13224/j.cnki.jasp.2014.09.007

南京航空航天大学航空宇航学院, 南京 210016

基金项目:

江苏高校优势学科建设工程；国家自然科学基金（11002072）；高等学校博士学科点专项科研基金（新教师类）（20103218120001）

详细信息

作者简介:
孟令兵（1983-），男，河南信阳人，博士生，主要从事流固耦合、结构强度计算研究.

中图分类号: V211.47
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- 被引次数: 0
出版历程
- 收稿日期: 2013-06-03
- 刊出日期: 2014-09-28

Analysis of aerodynamic characteristics of flexible wing of dragonfly based on CFD/CSD method

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

摘要

摘要: 给出了一种基于计算流体力学/计算结构力学（CFD/CSD）的双向流固耦合方法.通过交替数字二叉树（ADT）搜索技术识别流固网格之间的宿主-受体关系.采用局部插值算法完成两套网格系统之间的数据交换，并使用Delaunay图映射方法来完成气动网格的移动.将自编的非线性结构有限元程序、接口程序与南京航空航天大学（NUAA）微型飞行器中心的流体计算程序3D2MUFS相连接，应用于蜻蜓柔性翼拍动飞行的气动计算中.计算结果表明：柔性变形使得蜻蜓翼的时均举力系数从0.31提高到0.53，时均推力系数从0.07提高到0.13，证实了柔性变形能改善扑翼的气动性能.
- 流固耦合 /
- 蜻蜓 /
- 柔性翼 /
- 平板壳单元 /
- 扑翼
Abstract: A methodology of fluid-structure bi-directional interaction based on computational fluid dynamics/computational structure dynamics (CFD/CSD) was presented. The donor-receptor relationship between two sets of grid system was identified by alternating digital tree (ADT). The local interpolation methods were used for data exchange between these two sets of grids. Flow with moving boundaries was dealt with by Delaunay graph mapping method. The code for nonlinear structural finite element and information transfer was developed and used to connect with the code of flow solver 3D2MUFS developed in the Micro Air Vehicle Center of Nanjing University of Aeronautics and Astronautics (NUAA). It was applied to the aerodynamic computation of dragonfly flapping flight with flexible wing. Results show that the time-averaged vertical force coefficient of the dragonfly wing increases from 0.31 to 0.53, and the time-averaged thrust coefficient increases from 0.07 to 0.13 by flexible deformation. This confirms that the flexible deformation can improve the aerodynamic performance of flapping wing.
- fluid-structure interaction /
- dragonfly /
- flexible wing /
- flat shell element /
- flapping wing

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参考文献(15)

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