为研究流体动力激励下换热管束振动机制及其失稳边界，减少对复杂物理实验的依赖。本文采用离散粘性涡域方法求解了换热管束的流体激励载荷，结合管束振动微分方程，建立了换热管束横向绕流弹性激振数学模型；并基于小参数和线性系统假设，确定了多管束稳定性临界流速求解条件；同时，基于对换热管束流体载荷近程特性和管束对称性的分析，利用相似性准则，研究了由典型3管束单元求解5管束结果稳定性临界流速计算。研究结果表明：通过与试验数据对比，相对误差为15%–20%，证明计算方法对线性对称换热管束稳定性分析的可靠性。
To study the vibration mechanism and instability boundary of heat exchanger tube bundles under fluid dynamic excitation, the dependence on complex physical experiments has been reduced. This paper adopts the discrete viscous vortex domain method to solve the fluid excitation load of the heat exchanger tube bundle. By combining it with the vibration differential equation of the tube bundle, a mathematical model of elastic excitation for the transverse cross-flow of the heat exchanger tube bundle is established. Based on the assumptions of small parameters and a linear system, the solving conditions for the critical flow velocity of the stability of multiple tube bundles are determined. At the same time, based on the analysis of the near-field characteristics of the fluid load on the heat exchanger tube bundle and the symmetry of the tube bundle, and by using the similarity criterion, the calculation of the critical flow velocity of the stability of the 5-tube bundle is studied by solving the results of the typical 3-tube bundle unit. The research results show that, through comparison with the experimental data, the relative error is 15–20%, which verifies the reliability of the calculation method in this paper for the stability analysis of linearly symmetric heat exchanger tube bundles.
2025,47(23): 36-42 收稿日期：2025-3-19
DOI：10.3404/j.issn.1672-7649.2025.23.005
分类号：U661.33
基金项目：重点基础研究项目（2023-173ZD-147）
作者简介：张伟(1989-),女,讲师,研究方向为船舶水动力与操纵性
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