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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 ...
Xuan Bach Tran, 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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Nuclear Energy and Technology, 2015 The paper considers the flow and heat transfer in coolant flows cooling the fuel rod bundles of nuclear reactors with modified cell-type spacer grids. The spacer grids were developed by JSC Mashinostroitelny Zavod, Elektrostal, and differ from standard ...
V.G. Krapivtsev +2 more
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Numerical investigation on the hydraulic loss correlation of ring-type spacer grids
Nuclear Engineering and Technology, 2022 An accurate prediction of the pressure drop along the flow paths is crucial in the design of advanced passive systems cooled by heavy liquid metal coolants.
Kyung Ha Ryu +7 more
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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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Numerical and experimental investigation of the water flow through PWR spacer grids
Brazilian Journal of Radiation Sciences, 2021 Spacer grids are one of main components of a Pressurized Water Reactor (PWR) fuel assembly. They are able to improve heat transfer from rod bundles to the water flow by increasing turbulence and mixture of this flow.
Higor Fabiano Pereira de Castro +8 more
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Numerical investigation of the critical heat flux in a 5 × 5 rod bundle with multi-grid
Nuclear Engineering and Technology, 2022 To improve the heat transfer efficiency of the reactor fuel assembly, it is necessary to accurately calculate the two-phase flow boiling characteristics and the critical heat flux (CHF) in the fuel assembly.
Wei Liu +7 more
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Friction and wear of elements of nuclear reactors [PDF]
E3S Web of Conferences, 2023 Fuel elements (fuel rods) and spacer grids are the main elements of the fuel assembly of a nuclear reactor. Friction forces affect the strength of the fuel assembly at all stages of its life cycle.
Kanareykin Alexandr
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Ultrasonic monitoring of the VVER-1000 FA form change [PDF]
Nuclear Energy and Technology, 2022 A procedure has been developed to determine the geometrical parameters of fuel assemblies (FA) by an ultrasonic pulse-echo technique used for all types of light-water reactor FAs. The measurement of geometrical parameters is achieved through the pairwise
Aleksandra V. Voronina +2 more
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