High-Fidelity Numerical Investigation on Elucidating Sodium Heat Transfer Characteristics for 37-Pin Wire-Wrapped Fuel Bundle in the PLANDTL Facility

Choi, Giuk; Yoon, Sujong; Song, Minseop; Jeong, Jae-Ho; Yu, ed., Guojun

doi:10.1155/2023/8834634

Title: High-Fidelity Numerical Investigation on Elucidating Sodium Heat Transfer Characteristics for 37-Pin Wire-Wrapped Fuel Bundle in the PLANDTL Facility

Journal Article · 08 August 2023 · International Journal of Energy Research

DOI: https://doi.org/10.1155/2023/8834634 · OSTI ID:1994223

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^[4]; Yu, ed., Guojun

Department of Mechanical Engineering, Gachon University, 1342, Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, Republic of Korea, Idaho National Laboratory, 2525 Fremont Avenue, Idaho Falls, ID 83415-6188, USA
Idaho National Laboratory, 2525 Fremont Avenue, Idaho Falls, ID 83415-6188, USA
Idaho National Laboratory, 2525 Fremont Avenue, Idaho Falls, ID 83415-6188, USA, Department of Nuclear Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
Department of Mechanical Engineering, Gachon University, 1342, Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, Republic of Korea

This study involved a Reynolds-averaged Navier-Stokes- (RANS-) based computational fluid dynamics (CFD) analysis of the 37-pin wire-wrapped fuel bundle of the PNC Plant dynamics test loop (PLANDTL) facility. Previously, mainly the hydrodynamic phenomena of the wire-wrapped fuel bundle were analyzed, but the present study additionally included heat transfer analysis through conjugate heat transfer. The main purpose of the study was to benchmark the experimental data of the PLANDTL 37-pin wire-wrapped fuel bundle to investigate the heat transfer phenomena. In addition, the aim was to verify the accuracy of the RANS-based CFD analysis method using the STAR-CCM+ simulation software in comparison with the experimental data. The grid used for verification was an innovative grid system consisting of hexahedra using Fortran-based code. The development of the RANS-based CFD methodology included grid sensitivity analysis, turbulence model sensitivity analysis, and turbulent Prandtl number sensitivity analysis. Information on the temperature, mass flow rate, and area of the CFD results for each subchannel was provided for the top of the heated section and is expected to serve as a reference for future studies aiming to perform the validation and verification of a PLANDTL facility. In addition, the dependence of the peak temperature on the azimuth angle of each pin was analyzed.

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Sponsoring Organization:: USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: AC07-05ID14517

OSTI ID:: 1994223

Journal Information:: International Journal of Energy Research, Journal Name: International Journal of Energy Research Vol. 2023; ISSN 0363-907X

Publisher:: Hindawi Publishing CorporationCopyright Statement

Country of Publication:: United Kingdom

Language:: English

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