基于精细化建模的换热管涡激振动数值研究
A numerical study of vortex-induced vibration of heat exchanger tubebased on refined modeling
孙军帅 1李旭鹏 2孙汝雷 1温济铭 1李小畅 3田瑞峰1
作者信息
- 1. 哈尔滨工程大学 核科学与技术学院, 黑龙江 哈尔滨 150001
- 2. 中国船舶及海洋工程设计研究院, 上海 200011
- 3. 哈尔滨工程大学 航天与建筑工程学院, 黑龙江 哈尔滨 150001
- 折叠
摘要
为了研究换热管的涡激振动行为,本文基于大涡模拟方法建立了精细化流场计算模型.采用HHT-α方法求解结构动力学方程,结合局部动网格变形技术,得到了换热管涡激振动流固耦合计算模型.以雷诺数为 3 900 的固定圆柱绕流算例和Jauvtis&Williamson的经典涡激振动实验分别对流场计算模型和结构场计算模型进行了验证分析,并研究了不同约化流速下换热管的振动响应、运动轨迹、尾迹模式等.结果表明:建立的涡激振动计算模型可以准确地预测单根换热管的涡激振动行为.本文研究对建立换热管管束结构的流致振动计算模型具有借鉴意义.
Abstract
To study the vortex-induced vibration behavior of a single heat exchange tube,we established a refined flow field calculation model based on a large eddy simulation.The structural dynamics equations using the HTT-α method.In combination with the local dynamic mesh deformation technology,the fluid-structure interaction calcula-tion model of the vortex-induced vibration of the heat exchange tube was obtained.To analyze and study the vibra-tion response,motion trajectory,and wake mode of the heat exchange tube at different reduced flow velocities,the flow field calculation and the structural field calculation models were fully verified using the flow around a fixed cyl-inder with a Reynolds number of 3 900 and Jauvtis&Williamson′s classical vortex-induced vibration experiment.The results show that the vortex-induced vibration calculation model accurately predicts the vortex-induced vibration behavior of a single heat exchange tube.This research provides an important reference for establishing a flow-in-duced vibration calculation model of the tube bundle structure.
关键词
精细化建模/大涡模拟/圆柱绕流/局部动网格变形技术/流固耦合/流致振动/超级上端分支/锁频Key words
refined modeling/large eddy simulation/flow around a cylinder/local dynamic mesh deformation tech-nology/fluid-structure interaction/flow-induced vibration/super upper branch/frequency lock-in引用本文复制引用
出版年
2023
国家科技期刊平台
NSTL
维普
万方数据