弹性薄板流致振动特性  

Flow Induced Vibration Characteristics of the Elastic Plate

作　　者：李承慧 信志强[1] 顾水涛 李涛 LI Chenghui;XIN Zhiqiang;GU Shuitao;LI Tao(The College of Mechanics and Materials Hohai University,NanJing 211100,China;School of Civil Engineering Chongqing University,ChongQing 400045,China;Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,GuangZhou 510650,China)

机构地区：[1]河海大学力学与材料学院,江苏南京211100 [2]重庆大学土木工程学院,重庆400045 [3]中国科学院广州能源研究所,广东广州510650

出　　处：《粉煤灰综合利用》2020年第3期1-9,91,共10页Fly Ash Comprehensive Utilization

基　　金：国家自然科学基金(11872174)。

摘　　要：对金属弹性薄板的流固耦合动力响应进行了数值模拟。在模拟计算中固体采用有限单元法,流体采用有限体积法,在流体与固体交界面上进行耦合数据的传递,完成了双向流固耦合计算,在广泛雷诺数范围内研究了弹性薄板流致振动特性。对比分析了不同雷诺数下弹性薄板的振动特性、薄板受力以及压力分布和涡量特性,得出了弹性薄板振动的频率和幅值以及板所受升力的频率和幅值随着雷诺数变化的规律;分析了流场特征与薄板振动特性的关系,揭示了板的受力机理和双向流固耦合的重要性。The dynamic responses of the metal elastic plate are investigated by the numerical simulation of the fluid and solid interaction.The finite element method and the finite volume method are used to solve the solid and fluid regions,respectively.The transfer of the coupling data are carried out on the interface between fluid and solid,and then the bidirectional fluid-solid interaction calculation is achieved.The flowinduced vibration characteristics of thin plates in a wide range of Reynolds numbers are studied.The vibration characteristic,lift force on the plate,pressure distribution and vortex characteristics of the elastic plate with different Reynolds number are compared and analyzed.The rule of the variation of the frequency and amplitude of vibration of the elastic plates and the frequency and amplitude of lift force on the plate with Reynolds number are obtained.The physical mechanism of the plate and the impacts of bidirectional fluid-solid interaction are revealed through analyzing the relationship between flow field characteristics and vibration characteristics of thin plates.

关 键 词：弹性薄板 流致振动 双向耦合模拟 

分 类 号：O351.2[理学—流体力学]