核电工程异形水箱流固耦合分布式参数模型与效用研究

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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.

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

Received: 26 June 2023 Published: 28 April 2024

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	LI Jianbo1
	2
	LIU Jia1
	2
	LI Zhiyuan3
	LIN Gao1
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Cite this article:

LI Jianbo1,2,LIU Jia1, et al. 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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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2024/V43/I8/43

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