Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2020, Vol. 31 ›› Issue (6): 54 doi: 10.1007/s41365-020-00771-0

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

A transient fluid-structure interaction analysis strategy and validation for pressurized reactor due to loss-of-coolant accidents

Ying-Chao Ma 1, Xie-Lin Zhao 1,  Xian-Hui Ye 2, Nai-Bin Jiang 3 , Jin-Xiong Zhou 1   

  1. 1 State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi’an Jiaotong University, Xi’an 710049, China
    2 Key Laboratory of Nuclear Reactor System Design Technology, Nuclear Power Institute of China, Chengdu 610200, China
    3 Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
  • Received:2020-02-07 Revised:2020-03-19 Accepted:2020-03-25
  • Contact: Jin-Xiong Zhou E-mail:jxzhouxx@mail.xjtu.edu.cn
PDF ShareIt Export Citation
Ying-Chao Ma, Xie-Lin Zhao, Xian-Hui Ye, Nai-Bin Jiang, Jin-Xiong Zhou. A transient fluid-structure interaction analysis strategy and validation for pressurized reactor due to loss-of-coolant accidents.Nuclear Science and Techniques, 2020, 31(6): 54     doi: 10.1007/s41365-020-00771-0

Abstract: A loss-of-coolant accident (LOCA) is one of the basic design considerations for nuclear reactor safety analysis. A LOCA induces propagation of a depressurization wave in the coolant, exerting hydrodynamic forces on structures via fluid–structure interaction (FSI). The analysis of hydrodynamic forces on the core structures during a LOCA process is indispensable. We describe the implementation of a numerical strategy for prestressed structures. It consists of an initialization and a restarted transient analysis process, all implemented via the ANSYS Workbench by system coupling of ANSYS and Fluent. Our strategy is validated by making extensive comparisons of the pressures, displacements, and strains on various locations between the simulation and reported measurements. The approach is appealing for dynamic analysis of other prestressed structures, owing to the good popularity and acknowledgement of ANSYS and Fluent in both academia and industry.

Key words: Loss-of-coolant accident (LOCA), Fluid– structure interaction (FSI), Finite element method, Prestressed structure, Structural dynamics