Simulation and analysis of core barrel vibrational modes associated with neutron noise phenomena in WWER-type reactors

A Kamkar, O Safarzadeh, M Abbasi - Nuclear Engineering and Design, 2024 - Elsevier
This survey focuses on an approach to address various vibrational modes of the core barrel
in a hexagonal-structured reactor core. The core barrel vibration is considered one of the …

[HTML][HTML] Deep learning techniques for in-core perturbation identification and localization of time-series nuclear plant measurements

A Papaoikonomou, J Wingate, V Verma… - Annals of Nuclear …, 2022 - Elsevier
The use of machine learning in the field of reactor safety and noise diagnostics has recently
seen great potential given the advancements made in computational tools, hardware and …

[HTML][HTML] Modelling and simulations of reactor neutron noise induced by mechanical vibrations

A Vidal-Ferràndiz, D Ginestar, A Carreño… - Annals of Nuclear …, 2022 - Elsevier
Mechanical vibrations of core internals are among the main perturbations that induce
oscillations in the neutron flux field, also known as neutron noise. In this work, different …

Method research and effect analysis of fuel-assembly bowing on neutron-physics simulations of HPR1000

C Wan, L Guo, J Bai - Annals of Nuclear Energy, 2023 - Elsevier
The fuel-assembly bowing is widely observed in PWR, due to the complex operational
environment in the core. After the fuel-assembly bowing, the three-dimensional (3D) water …

A comprehensive analysis of thermal–hydraulic signatures in neutron noise of WWER-type reactors

A Kamkar, M Abbasi, O Safarzadeh… - Nuclear Engineering and …, 2024 - Elsevier
The neutron noise phenomenon, occurring in all types of nuclear reactors, provides valuable
insights into the dynamic behavior of these reactors. In this work, a well-justified approach …

Modeling and simulation of neutron noise triggered by fuel assembly vibrations in 3D hexagonal geometry

A Kamkar, M Abbasi, O Safarzadeh - Nuclear Engineering and Design, 2023 - Elsevier
Neutron noise is a natural phenomenon in nuclear reactors. Hence, its investigation plays a
significant role in nuclear reactor physics and safety-related issues. While neutron noise …

[HTML][HTML] Understanding the neutron noise induced by fuel assembly vibrations in linear theory

C Demazière, A Rouchon, A Zoia - Annals of nuclear energy, 2022 - Elsevier
This paper investigates the underlying physical mechanisms involved in the monochromatic
vibrations of fuel assemblies and their effects on the induced neutron noise throughout the …

[HTML][HTML] On the simulation of neutron noise induced by vibrations of fuel pins in a fuel assembly

P Vinai, H Yi, C Demaziere, A Rouchon, A Zoia… - Annals of Nuclear …, 2023 - Elsevier
Vibrations of fuel assemblies are an important issue in the safe operation of nuclear
reactors, because they can challenge the integrity of the fuel with potential for radioactive …

Sensitivity analysis and uncertainty quantification of neutron noise simulations in WWER-type reactors using machine learning-based surrogate models

A Kamkar, M Abbasi - Nuclear Engineering and Design, 2025 - Elsevier
Neutron noise simulations are powerful tools in nuclear engineering, supporting core
diagnostics and reactor dynamics analysis. However, the reliability of these simulations is …

Characterization of high harmonic frequencies in reactor noise experiments within the CORTEX project

K Ambrožič, V Larmirand… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
We present a novel technique of neutron noise detection and experimental data
interpretation developed during the EU H2020 project CORTEX aiming to improve the …