Review of spacer grid to rod fretting in pressurized water reactor

G Ricciardi, V Faucher, L Rossi, F François… - … Engineering and Design, 2024 - Elsevier
In spite of the low fuel failure rate in currently operating water cooled nuclear power reactors,
operations are increasingly demanding with higher burn-up, power increases, cycle lengths …

Numerical modeling of flow induced vibration of nuclear fuel rods

D De Santis, A Shams - Nuclear Engineering and Design, 2017 - Elsevier
Flow induced vibration (FIV) plays an important role in many industrial applications,
including nuclear energy. In a nuclear power plant, several components could experience …

Nonlinear vibrations of beams with bilinear hysteresis at supports: interpretation of experimental results

P Balasubramanian, G Franchini, G Ferrari… - Journal of Sound and …, 2021 - Elsevier
Experimental vibration responses of beams with nonlinear boundary conditions were
interpreted using a bilinear spring model. Two systems of beams were considered: one is a …

Nonlinear vibrations of a nuclear fuel rod supported by spacer grids

G Ferrari, G Franchini, P Balasubramanian… - … Engineering and Design, 2020 - Elsevier
The internal components of Pressurized Water Reactors (PWRs), particularly nuclear fuel
assemblies, must be able to withstand Flow Induced Vibrations (FIVs) during operating …

Nonlinear vibrations of a 3× 3 reduced scale PWR fuel assembly supported by spacer grids

G Ferrari, G Franchini, L Faedo, F Giovanniello… - … Engineering and Design, 2020 - Elsevier
Abstract The core of Pressurized Water Reactors (PWR) is composed by nuclear fuel
assemblies, bundles of slender fuel rods containing uranium pellets, kept in position by …

Non-linear vibrations of nuclear fuel rods

G Ferrari, P Balasubramanian, S Le Guisquet… - … Engineering and Design, 2018 - Elsevier
Single zirconium alloy nuclear fuel rods with clamped-clamped boundary conditions and
subjected to harmonic excitation at various force levels were experimentally studied …

A validated numerical methodology for flow-induced vibration of a semi-spherical end cantilever rod in axial flow

W Mao, H Iacovides, A Cioncolini, H Li… - Physics of …, 2024 - pubs.aip.org
This study presents a simulation method for turbulent flow-induced vibrations of cantilever
rods with a semi-spherical end exposed to axial flow, a configuration investigated for the first …

Numerical simulations of rod assembly vibration induced by turbulent axial flows

D De Santis, S Kottapalli, A Shams - Nuclear Engineering and Design, 2018 - Elsevier
In this paper, various aspects relevant for nuclear applications of bare rod bundles in axial
turbulent flows are studied by means of numerical simulations. The work first investigates the …

Thermal-hydraulic experimental testing of the MYRRHA wire-wrapped fuel assembly

G Kennedy, K Van Tichelen, J Pacio… - Nuclear …, 2020 - Taylor & Francis
In recent years, extensive thermal-hydraulic experimental tests have been performed on the
lead-bismuth eutectic (LBE)–cooled, wire-wrapped fuel assembly (FA) of MYRRHA. These …

Vibration monitoring using fiber optic sensors in a lead-bismuth eutectic cooled nuclear fuel assembly

B De Pauw, A Lamberti, J Ertveldt, A Rezayat… - Sensors, 2016 - mdpi.com
Excessive fuel assembly vibrations in nuclear reactor cores should be avoided in order not
to compromise the lifetime of the assembly and in order to prevent the occurrence of safety …