基于CFD/CSD紧耦合的旋翼翼型气弹分析

黄道博; 李建东; 刘勇

doi:10.13224/j.cnki.jasp.2016.08.004

基于CFD/CSD紧耦合的旋翼翼型气弹分析

doi: 10.13224/j.cnki.jasp.2016.08.004

1. 南京航空航天大学直升机旋翼动力学国家级重点实验室, 南京 210016;
2. 西安前沿动力软件开发有限责任公司, 西安 710065

详细信息

作者简介:
黄道博(1987-),男,广西博白人,硕士生,主要从事直升机动力学设计及旋翼气弹耦合分析.

通讯作者:
刘勇(1965-),男,山西高密人,讲师、硕士生导师,博士,主要从事直升机旋翼气动弹性耦合设计和桨叶复合材料设计.E-mail:liuyong@nuaa.edu.cn

中图分类号: V211.3
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出版历程
- 收稿日期: 2015-07-21
- 刊出日期: 2016-08-28

Aeroelastic analysis of rotor airfoil based on CFD/CSD tight coupling method

1. National Key Laboratory of Science and Technology on Rotorcraft Aeromechanics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. Xi'an Advanced Dynamics Technology Incorporation, Xi'an 710065, China

摘要

摘要: 采用CFD/CSD（计算流体力学/计算结构力学）紧耦合的方法，以Fluent软件作为主控平台，通过UDF（用户自定义函数）及I/O（输入/输出）文件读写的方式实现结构响应和气动载荷的数据交换，耦合求解了旋翼桨叶剖面的气动力和振动响应.在此基础上研究旋翼桨叶剖面在变距、沉降（挥舞）和周期交变来流条件下的气动特性和振动响应特性.结果表明：桨叶剖面在轻失速情况下，气动载荷周期性比较好，表现出光滑的迟滞环曲线，结构沉降响应也表现出光滑的周期性现象，扭转响应出现局部轻微振荡.深失速情况下，气动载荷及结构响应都表现出强烈的非线性振荡，高频成分较为明显.
- CFD/CSD紧耦合 /
- 结构响应 /
- 气动载荷 /
- 桨叶 /
- 翼型 /
- 直升机
Abstract: By coupling the calculation of the unsteady aeroforce and the vibration response through the development of CFD/CSD (computational fluid dynamics/computational structure dynamics) tight coupling method, the Fluent code was calculated, and the data of structural response and dynamic load were exchanged by UDF (user defined function)and reading and writing the I/O (input/output) files. The aerodynamic characteristics and vibration response of the airfoil at the condition of pitching motion, plunging (flapping) motion and periodic alternating incoming flow were studied. Numerical results indicated that the aerodynamic load was periodic, showing a smoothing hysteresis curve in rotating process,and the flapping responses also showed a cyclical phenomenon, the pitching response showed slight oscillation at slight stall condition. At the deep stall condition, the aerodynamic load or structural response showed strong nonlinear oscillation, high frequency components were more obvious.
- CFD/CSD tight coupling /
- structural response /
- aerodynamic load /
- blade /
- airfoil /
- helicopter

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参考文献(18)

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