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An Investigation of Structural Strength of Nuclear Fuel Spacer Grid
EnergiesThis paper compares and discusses the methods for evaluation of the structural integrity of the mid spacer grid of nuclear fuel assembly via a finite element analysis of 3D shell elements.
Naqeeb Hakam Adli, Ihn Namgung
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Experimental Study of Pressure Loss in a 5 × 5–Rod Bundle With the Mixing Vane Spacer Grid [PDF]
Frontiers in Energy Research, 2021 Axial and lateral pressure loss in a 5 × 5 rod–bundle with a split-type mixing vane spacer grid was experimentally measured using differential pressure transmitters at different sub-channel Reynolds numbers (Re) and orienting angles.
Wenhai Qu +3 more
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Case Studies in Thermal Engineering, 2022 In this study, a numerical model of two-phase flow boiling in a rod bundle channel was developed to investigate the influence of spacer grid's arrangement on thermal-hydraulic characteristics and critical heat flux (CHF).
Yingwen Liu
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Case Studies in Thermal Engineering, 2020 A multiphase flow numerical model based on Eulerian is built to simulate the characteristics of subcooled boiling. The thermodynamic performance in a single rod channel with/without spacer grid are obtained by numerical simulation, and the influence of ...
Yingwen Liu
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Performance Evaluation of New Spacer Grid Shapes for PWRs [PDF]
Nuclear Engineering and Technology, 2007 A spacer grid, which is one of the most important structural components in a PWR fuel assembly, supports its fuel rods laterally and vertically. Based on in-house design experience, scrutiny of the design features of advanced nuclear fuels and the patents of other spacer grids, KAERI has devised its own spacer grid shapes and acquired patents.
Kee-Nam Song
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New Spacer Grid to Enhance Mechanical/Structural Performance [PDF]
Journal of Nuclear Science and Technology, 2010 A spacer grid (SG), which supports nuclear fuel rods (FRs) laterally and vertically with a friction grip, is one of the most important structural components in a PWR fuel. The forms of the grid straps and spring form are known to be closely related with the SG crush strength and the integrity of FR support, respectively.
Kee Nam Song +4 more
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A Study of Neutronics Effects of the Spacer Grids in a Typical PWR via Monte Carlo Calculation
Nuclear Engineering and Technology, 2016 Spacer grids play an important role in maintaining the proper form of the fuel assembly structure and ensuring the safety of reactor core design. This study applies the Monte Carlo method to the analysis of the neutronics effects of spacer grids in a ...
Nam Zin Cho
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CFD Turbulence Study of PWR Spacer-Grids in a Rod Bundle [PDF]
Science and Technology of Nuclear Installations, 2014 Nuclear fuel bundles include spacers essentially for mechanical stability and to influence the flow dynamics and heat transfer phenomena along the fuel rods.
C. Peña-Monferrer +2 more
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Journal of Radiation Research and Applied Sciences, 2022 One of the principal issues in the phase change heat transfer at the vertical channel that changes the vapour fraction in the two-phase system is the presence of a grid spacer which prompts the temperature and velocity jump.
Mohammad Yaghoub Abdollahzadeh Jamalabadi +1 more
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Numerical simulation to study mixing vane spacer effects on heat transfer performance of supercritic
Journal of Thermal Engineering, 2023 The spacer represents an essential part in the nuclear fuel rod. Spacer grid with mixing vanes in fuel rod bundle of nuclear reactor core has a significant impact on heat transfer performance in downstream to grid spacer.
Satish Kumar DHURANDHAR +2 more
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