低雷诺数下近自由液面圆柱流致振动数值模拟与机理

doi:10.6040/j.issn.1672-3961.0.2021.128

山东大学学报 (工学版) ›› 2022, Vol. 52 ›› Issue (3): 51-60.doi: 10.6040/j.issn.1672-3961.0.2021.128

• • 上一篇

低雷诺数下近自由液面圆柱流致振动数值模拟与机理

戚翔¹,冯翔健¹,熊骋望²,孙子正³,张一鸣^1*

1.河北工业大学土木与交通学院, 天津 300401;2.哈尔滨工程大学船舶工程学院, 黑龙江哈尔滨 150001;3.山东大学齐鲁交通学院, 山东济南 250061

发布日期:2022-06-23
作者简介:戚翔(1993— ),男,陕西西安人,硕士研究生,主要研究方向为流固耦合. E-mail:xiang-qi@foxmail.com. *通信作者简介:张一鸣(1984— ),男,上海人,主要研究方向为岩土工程、土木工程防灾减灾. E-mail:yiming.zhang@hebut.edu.cn
基金资助:
国家自然科学基金青年资助项目(51909055);海岸与近海工程国家重点实验室专项开放基金项目(LP1921)

Numerical simulation and mechanism of flow-induced vibration of a circular cylinder close to a free surface at low Reynolds number

QI Xiang¹, FENG Xiangjian¹, XIONG Chengwang², SUN Zizheng³, ZHANG Yiming^1*

1. School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China;
2. College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, China;
3. School of Qilu Transportation Engineering, Shandong University, Jinan 250061, Shandong, China

Published:2022-06-23

摘要/Abstract

摘要： 采用嵌入格子-玻尔兹曼方法和自由液面模型的XFlow软件对低雷诺数Re=100下近自由液面圆柱垂向流致振动问题开展数值模拟与机理研究。根据圆柱涡脱落特性和圆柱周围液面形态将浸没比h^*∈［0,5］和弗劳德数Fr∈［0.3,2］的参数空间划分为6种不同的流态,研究不同流态下圆柱振动特性和振动-涡脱落-自由液面耦合作用。结果表明,圆柱振幅和振动频率都随自由液面的靠近而降低,而当自由液面非常靠近圆柱时,尾迹状态从绝对不稳定性转为对流不稳定性,圆柱与自由液面之间形成的射流状流动附着在圆柱表面上,抑制了涡脱落过程,导致圆柱不再振动。

关键词: 流致振动, 自由液面, 低雷诺数, 弗劳德数, 浸没比, 流固耦合

中图分类号:

O351.2

戚翔,冯翔健,熊骋望,孙子正,张一鸣. 低雷诺数下近自由液面圆柱流致振动数值模拟与机理[J]. 山东大学学报 (工学版), 2022, 52(3): 51-60.

QI Xiang, FENG Xiangjian, XIONG Chengwang, SUN Zizheng, ZHANG Yiming. Numerical simulation and mechanism of flow-induced vibration of a circular cylinder close to a free surface at low Reynolds number[J]. Journal of Shandong University(Engineering Science), 2022, 52(3): 51-60.

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低雷诺数下近自由液面圆柱流致振动数值模拟与机理

Numerical simulation and mechanism of flow-induced vibration of a circular cylinder close to a free surface at low Reynolds number

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