CFD investigation of three-dimensional flow phenomena in a JAEA 127-pin wire-wrapped fuel assembly

Jeong, Jae-Ho; Song, Min-Seop; Lee, Kwi-Lim

doi:10.1016/j.nucengdes.2017.08.008

Cited by 26 publications

(4 citation statements)

References 22 publications

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“…Because the actual wire shape is simulated without distorting the shape, a more accurate prediction of the contact area between the wire and the rod becomes possible. In the previous study, an innovative grid-based RANS methodology was applied to the CFX, and the pressure drop and heat transfer were well predicted [4,9]. The grid that forms around the rod and wire is referred to as the inner fluid domain.…”

Section: Methodsmentioning

confidence: 99%

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

Choi

Yoon

Minseop

et al. 2023

International Journal of Energy Research

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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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Section: Methodsmentioning

confidence: 99%

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

Choi

Yoon

Minseop

et al. 2023

International Journal of Energy Research

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“…Nowadays numerical simulation is a useful and powerful tool to analyse and predict physical processes such as industrial forming processes (Ryzhakov et al, 2016), structural analysis (Barbu et al, 2015;Chacón et al, 2016), electromagnetic interference (Otin, 2013), fluid dynamics (Bussetta et al, 2014;Colomés et al, 2016), etc. Using numerical models, it is possible to minimize and in some cases avoid experimental studies, and it is also possible to understand complex phenomena for which direct observation and measuring is difficult or impossible (Jeong et al, 2017;Mimouni et al, 2016). Numerical modelling has been widely used in flood analysis and management.…”

Section: Numerical Modelmentioning

confidence: 99%

Modelling flood propagation in the service galleries of a nuclear power plant

Castellet

Sanz-Ramos

Dolz

et al. 2019

Nuclear Engineering and Design

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In the context of the stress tests that have to be applied to nuclear power plants, this work presents the study of the flooding processes of the service galleries of a nuclear plant caused by a hypothetical failure of some of the pipes of the Essential Services Water System (ESWS). To assess the flood propagation along the galleries, two-dimensional hydraulic modelling tools, based on the solution of the shallow water equations with the finite volume method, were used. Due to the complexity and special features of the geometry and hydraulic processes, when compared with more standard urban flood assessment works, several specific modules were developed. A relevant one is a new module to consider the effect of the occupation of the galleries on the advance of the waterfront. This module was developed and verified prior to being applied to a case study. The results show the suitability of the proposed methodology to be used as part of the stress tests to ensure high security standards of nuclear power plants.

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“…The results derived from the k-ε model displayed excellent concurrence with experimental data. Jeong et al [ 20 ] used CFX to examine the flow characteristics in a fuel assembly with 127 pins and wire-wrapped spacers, which possessed a pitch measuring 293.9 mm. The ratio of axial flow to tangential flow in edge and corner subchannels was larger than that in the internal subchannels.…”

Section: Introductionmentioning

confidence: 99%

Applicability of RANS models and pressure drop in edge subchannels for 19-pin wire-wrapped fuel bundle channel in CiADS

Fan

Qiu

et al. 2023

Heliyon

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CFD investigation of three-dimensional flow phenomena in a JAEA 127-pin wire-wrapped fuel assembly

Cited by 26 publications

References 22 publications

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

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

Modelling flood propagation in the service galleries of a nuclear power plant

Applicability of RANS models and pressure drop in edge subchannels for 19-pin wire-wrapped fuel bundle channel in CiADS

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