Results 121 to 130 of about 142,006 (191)
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Nuclear Fuel Assemblies and Fuel Debris Monitor for Characterization of Fuel Assemblies for Final Storage

Volume 1: Low/Intermediate-Level Radioactive Waste Management; Spent Fuel, Fissile Material, Transuranic and High-Level Radioactive Waste Management, 2013
NUKEM monitor FAMOS is designed to measure the burn up of fuel assemblies (FA’s) and allows the calculation of the content of fissile material and other actinides. The knowledge of the isotopic composition and activities of FA’s is required for a safe handling and storage of the elements.
M. Sokcic-Kostic   +3 more
openaire   +1 more source

Finite element analysis of the mechanical behavior of a nuclear fuel assembly spacer grid

Nuclear Engineering and Design, 2019
The purpose of this study is to develop a finite element model that accurately describes the mechanical behavior of a spacer grid. The spacer grid is the most important component of a nuclear fuel assembly and supports the fuel rod with a structurally ...
Y. Yoo, Kyoung-Hong Kim, K. Eom, S. Lee
semanticscholar   +1 more source

Invariant analysis of the Reynolds stress tensor for a nuclear fuel assembly with spacer grid and split type vanes

International Journal of Heat and Fluid Flow, 2019
Invariant analysis of the Reynolds stress tensor anisotropy can give an accurate and deep intuitive understanding of the turbulent structure of a turbulent flow.
G. Busco, E. Merzari, Y. Hassan
semanticscholar   +1 more source

Evaluation of fretting wear occurrence on the surface of nuclear fuel rods of Zr–1Nb–1Sn-0.1Fe alloy: Effects of assembly misalignment and grid spring loading

, 2020
A mechanical apparatus was developed to investigate the grid-to-rod fretting on nuclear assembly of Zr–1Nb–1Sn-0.1Fe alloy. Test apparatus allowed the performing of fretting tests on fuel rods at a frequency to 30 Hz, which was evaluated as the first ...
D. A. Baêta   +3 more
semanticscholar   +1 more source

A new method to simulate dispersion plate-type fuel assembly in a multi-physics coupled way

Annals of Nuclear Energy, 2022
The plate-type fuel has an excellent thermal–mechanical behavior as a type of nuclear fuel. To simulate and analyze the behavior of plate-type fuel assembly under irradiation conditions, a fuel performance analysis code BEEs-Plates was developed based on
Fengrui Xiang   +8 more
semanticscholar   +1 more source

Space and energy-based turbulent scale-resolving simulations of flow in a 5 × 5 nuclear reactor core fuel assembly with a spacer grid

International Journal of Heat and Fluid Flow, 2018
The partially averaged Navier–Stokes turbulence model, which is a bridging model between the Reynolds averaged Navier–Stokes model and direct numerical simulation, is capable of directly resolving the turbulent scales of interest by filtering the Navier ...
G. Busco, Y. Hassan
semanticscholar   +1 more source

Development of nuclear fuel assembly finite element model for mechanical integrity evaluation

Nuclear Engineering and Design, 2023
Y. Yoo   +3 more
semanticscholar   +1 more source

Numerical Study on Subcooled Boiling Flow and Heat Transfer Characteristics in Helical Cruciform Fuel Assembly

Nuclear Technology
The helical cruciform fuel rod is a new fuel design. Its advantages include a large surface area–to-volume ratio, short thermal conductivity distance, and no need for grid spacers.
Weishu Wang, Pengzhi Wang, Xiaojie Zheng
semanticscholar   +1 more source

Vibrations of nuclear fuel assemblies: A simplified model

Nuclear Engineering and Design, 1985
Abstract This paper is concerned with the resonance frequencies of nuclear reactor cores. The homogenized equations are obtained by representing the coupled cooling fluid-rod system as an equivalent continuous material. The homogenized dynamical equations are also derived and numerical procedures are presented in brief.
openaire   +1 more source

Evaluation of thermal hydraulic safety of a nuclear fuel assembly in a mast assembly of nuclear power plant

Annals of Nuclear Energy, 2016
Abstract We investigated the thermal–hydraulic safety of spent fuel bundles installed in a mast assembly, assuming a lock-up accident of a fuel transfer system. For this, flow analysis with Computational Fluid Dynamics (CFD) for the natural convection and subsequent safety evaluation with 1-D Nuclear Power Plant (NPP) safety analysis code were ...
YoungSoo Kim   +5 more
openaire   +1 more source

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