Nuclear Engineering and Technology

  • 제53권5호
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  • Pages.1540-1555
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  • 2021
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Thermal-fluid-structure coupling analysis for plate-type fuel assembly under irradiation. Part-I numerical methodology

  • Li, Yuanming (Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology, State Key Laborotary of Multiphase Flow in Power Engineering, Xi'an Jiaotong University) ;
  • Yuan, Pan (Science and Technology on Reactor System Design Technology Laboratory) ;
  • Ren, Quan-yao (Science and Technology on Reactor System Design Technology Laboratory) ;
  • Su, Guanghui (Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology, State Key Laborotary of Multiphase Flow in Power Engineering, Xi'an Jiaotong University) ;
  • Yu, Hongxing (Science and Technology on Reactor System Design Technology Laboratory) ;
  • Wang, Haoyu (Science and Technology on Reactor System Design Technology Laboratory) ;
  • Zheng, Meiyin (Science and Technology on Reactor System Design Technology Laboratory) ;
  • Wu, Yingwei (Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology, State Key Laborotary of Multiphase Flow in Power Engineering, Xi'an Jiaotong University) ;
  • Ding, Shurong (Institute of Mechanics and Computational Engineering, Department of Aeronautics and Astronautics, Fudan Univeristy)
  • 투고 : 2020.06.21
  • 심사 : 2020.10.21
  • 발행 : 2021.05.25
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초록

The plate-type fuel assembly adopted in nuclear research reactor suffers from complicated effect induced by non-uniform irradiation, which might affect its stress conditions, mechanical behavior and thermal-hydraulic performance. A reliable numerical method is of great importance to reveal the complex evolution of mechanical deformation, flow redistribution and temperature field for the plate-type fuel assembly under non-uniform irradiation. This paper is the first part of a two-part study developing the numerical methodology for the thermal-fluid-structure coupling behaviors of plate-type fuel assembly under irradiation. In this paper, the thermal-fluid-structure coupling methodology has been developed for plate-type fuel assembly under non-uniform irradiation condition by exchanging thermal-hydraulic and mechanical deformation parameters between Finite Element Model (FEM) software and Computational Fluid Dynamic (CFD) software with Mesh-based parallel Code Coupling Interface (MpCCI), which has been validated with experimental results. Based on the established methodology, the effects of non-uniform irradiation and fluid were discussed, which demonstrated that the maximum mechanical deformation with irradiation was dozens of times larger than that without irradiation and the hydraulic load on fuel plates due to differential pressure played a dominant role in the mechanical deformation.

키워드

과제정보

The authors are grateful for the support of the Natural Science Foundation of China (Grant No: U1867219, 11675161).

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