核电工程异形水箱流固耦合分布式参数模型与效用研究

李建波1,2,刘佳1,2,李志远3,林皋1,2

振动与冲击 ›› 2024, Vol. 43 ›› Issue (8) : 43-51.

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PDF(2333 KB)
振动与冲击 ›› 2024, Vol. 43 ›› Issue (8) : 43-51.
论文

核电工程异形水箱流固耦合分布式参数模型与效用研究

  • 李建波1,2,刘佳1,2,李志远3,林皋1,2
作者信息 +

A study on flow-solid coupling distributed parameter model and utility of non-standard water tanks in nuclear power engineering

  • LI Jianbo1,2,LIU Jia1,2,LI Zhiyuan3,LIN Gao1,2
Author information +
文章历史 +

摘要

在流固耦合动力分析领域,传统的Housner模型在工程设计中发挥重要作用。但其理论推导仅适用于规则水箱,采用集中质量总体模型描述液体晃动的整体效应,难以有效模拟异形水箱储液结构的局部精细响应,亟需建立适用于不规则水体晃荡的分布式附加质量模型。基于势流理论推导了一种模态综合法模型,实现了分布质量与储液器壁激振加速度的解耦。该模型能够有效剥离分布式的脉冲质量与对流质量;同时,实体网格的振型分析适用于任意形状水体的动力分析。通过算例的形式将该模型与精细CAS模拟法进行了比较,验证了模型的精确性与可靠性。最后,基于本文的模型研究了核电异形的安全水箱在不同水位和减晃格栅分布下的动力响应规律,并检验了其在工程中的适用性。

Abstract

In the realm of fluid-structure interaction dynamics, the traditional Housner model plays a pivotal role in engineering design. However, its theoretical derivation is limited to regular water tanks, employing a concentrated mass overall model to describe the global effect of liquid oscillations. This approach inadequately captures the finely detailed responses of irregularly shaped liquid storage structures, necessitating the development of a distributed additional mass model suitable for simulating oscillations in irregular water bodies.Through potential flow theory, a modal synthesis model is derived, achieving the decoupling of distributed mass and the vibrational acceleration of the liquid storage tank wall. This model effectively disentangles distributed impulse mass and convective mass. Moreover, the vibrational mode analysis of solid grids is applicable to the dynamic analysis of water bodies with arbitrary shapes. The model's accuracy and reliability are verified through comparisons with detailed Computational Fluid Dynamics (CFD) simulations.Finally, utilizing the proposed model, this study investigates the dynamic response patterns of safety tanks with irregular shapes in nuclear power plants at various water levels and sway grid distributions. The applicability of the model in engineering scenarios is demonstrated.

关键词

流固耦合 / 动水分布式质量模型 / 模态综合法 / 核电异形水箱

Key words

Fluid-structure coupling / Hydrodynamic distributed quality model / Modal synthesis method / Nuclear power shaped water tank

引用本文

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李建波1,2,刘佳1,2,李志远3,林皋1,2. 核电工程异形水箱流固耦合分布式参数模型与效用研究[J]. 振动与冲击, 2024, 43(8): 43-51
LI Jianbo1,2,LIU Jia1,2,LI Zhiyuan3,LIN Gao1,2. A study on flow-solid coupling distributed parameter model and utility of non-standard water tanks in nuclear power engineering[J]. Journal of Vibration and Shock, 2024, 43(8): 43-51

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