管束结构流弹失稳的数值预测方法研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (23) : 49-54.

论文

管束结构流弹失稳的数值预测方法研究

冯志鹏，蔡逢春，臧峰刚，齐欢欢，黄旋，刘帅

作者信息 +

Numerical prediction method for fluid-elastic instability of tube bundle structure

FENG Zhipeng,CAI Fengchun,ZANG Fenggang,QI Huanhuan,HUANG Xuan,LIU Shuai

Author information +

文章历史 +

摘要

流弹失稳（流体弹性不稳定性）会在短时间内导致管束破坏，是蒸汽发生器设计必须考虑的流致振动机理。本文通过理论建模和CFD（计算流体力学）计算相结合的方式，发展流弹失稳行为的数值预测方法。首先，分别基于准稳态理论、非稳态理论和一维非定常流动理论，推导出目前研究最广泛的三种流弹失稳理论模型的控制方程和关键参数的数学模型；然后，发展理论模型中众多参数的辨识方法，通过仿真数据驱动的方式，获得全套流体力相关参数；最后，以华龙一号蒸汽发生器的传热管为对象，建立管束结构流弹失稳的数值预测方法，并用现有试验数据进行验证。结果表明，通过CFD计算辨识的流体力相关参数与已有实验结果吻合，CFD计算与理论模型耦合的数值预测方法，具备一定的实用性；完成了数值预测方法的工程应用，预测结果与验证性试验的结论一致；本文的数值预测方法结合了理论建模和CFD计算的优点，同时避免了对海量计算资源的需求、降低了对试验数据的依赖，有利于在工程中推广应用。

Abstract

Fluidelastic instability (FEI) is the most serious, which could lead to tube bundle damage in short time. The numerical prediction approach is developed through the combination of theoretical modeling and CFD (Computational Fluid Dynamics) calculation. Firstly, the control equations and mathematical models of key parameters of the three most widely studied FEI theoretical models are derived based on quasi-steady theory, unsteady theory, and one-dimensional unsteady flow theory; then, the identification methods of many parameters in the theoretical model are developed. Through the simulation data-driven method, a full set of flow force related parameters are obtained. Finally, the numerical prediction method of FEI for tube bundle is established for steam generator of HPR1000. The predictions are verified with the existing test data. The results show that the numerical prediction method coupled with CFD calculation and theoretical model has certain practicability; the numerical prediction has been applied successfully in engineering and the prediction is consistent with the conclusion of the confirmatory test. The proposed method combines the advantages of theoretical modeling and CFD calculation, avoids the demand for massive computing resources, reduces the dependence on test data, and is conducive to application in engineering.

导出引用

冯志鹏，蔡逢春，臧峰刚，齐欢欢，黄旋，刘帅. 管束结构流弹失稳的数值预测方法研究[J]. 振动与冲击, 2023, 42(23): 49-54

FENG Zhipeng,CAI Fengchun,ZANG Fenggang,QI Huanhuan,HUANG Xuan,LIU Shuai. Numerical prediction method for fluid-elastic instability of tube bundle structure[J]. Journal of Vibration and Shock, 2023, 42(23): 49-54

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