Paolo Vinai

Associate Professor at Subatomic, High Energy and Plasma Physics

My research focus is modeling and simulations of nuclear reactors. I work with computational models for reactor physics, fluid dynamics, and heat transfer. I am also interested in nuclear reactor safety, validation of nuclear codes, and sensitivity and uncertainty methods for reactor calculations. The goal is to develop high-fidelity simulation tools and more accurate methodologies for the analysis of nuclear reactors under operational and accidental conditions.

Source: chalmers.se
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Showing 63 publications

2024

On reactor neutron noise induced by fuel assembly vibrations in large and small heterogenous water-cooled cores

Salma Hussein, Paolo Vinai, Christophe Demaziere
Proceedings of the International Conference on Physics of Reactors, PHYSOR 2024, p. 2408-2417
Paper in proceeding
2024

On the use of neutron flux gradient with ANNs for the detection of diverted spent nuclear fuel

Moad al-Dbissi, Imre Pazsit, Riccardo Rossa et al
Annals of Nuclear Energy. Vol. 204
Journal article
2023

Identification of diversions in spent PWR fuel assemblies by PDET signatures using Artificial Neural Networks (ANNs)

Moad al-Dbissi, Riccardo Rossa, Alessandro Borella et al
Annals of Nuclear Energy. Vol. 193
Journal article
2023

Modeling noise experiments performed at AKR-2 and CROCUS zero-power reactors

Mathieu Hursin, Andrea Zoia, Amélie Rouchon et al
Annals of Nuclear Energy. Vol. 194
Journal article
2023

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

Paolo Vinai, Huaiqian Yi, Christophe Demaziere et al
Annals of Nuclear Energy. Vol. 181
Journal article
2023

A three-dimensional two-energy group heterogeneous intrusive Reduced Order Model of xenon oscillations in PWRs

Kristoffer Pedersen, Christophe Demaziere, Paolo Vinai
Proc. Int. Conf. Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C2023)
Paper in proceeding
2022

Sensitivity analysis in core diagnostics

Joachim Herb, Y. Perin, S. Yum et al
Annals of Nuclear Energy. Vol. 178
Journal article
2022

Modelling and simulations of reactor neutron noise induced by mechanical vibrations

Antoni Vidal, Damian Ginestar, A. Carreño et al
Annals of Nuclear Energy. Vol. 177
Journal article
2022

Uncertainty analyses of neutron noise simulations in a Zero-Power reactor

Soobeen Yum, Mathieu Hursin, Alexander Vasiliev et al
Annals of Nuclear Energy. Vol. 174
Journal article
2022

Ringhals Diagnostics and Monitoring, Annual Research Report 2021-2022

Imre Pazsit, Luis Alejandro Torres, Cristina Montalvo et al
Report - Subatomic, High Energy and Plasma Physics
2022

Simulations of neutron noise in the research reactor AKR-2: comparison between a discrete ordinates and a diffusion-based method

Paolo Vinai, Antonios Mylonakis, Huaiqian Yi et al
Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022, p. 957-966
Paper in proceeding
2022

Understanding xenon oscillations through physics-based Reduced Order Modelling

Kristoffer Pedersen, Christophe Demaziere, Paolo Vinai
Transactions of the American Nuclear Society. Vol. 126 (1), p. 772-775
Paper in proceeding
2022

Development and test of a novel verification scheme applied to the neutronic modelling of Molten Salt Reactors

Christophe Demaziere, Antonios Mylonakis, Paolo Vinai
Annals of Nuclear Energy. Vol. 167
Journal article
2022

Machine learning for analysis of real nuclear plant data in the frequency domain

Stefanos Kollias, Miao Yu, J. Wingate et al
Annals of Nuclear Energy. Vol. 177
Journal article
2022

Conceptual design and initial evaluation of a neutron flux gradient detector

Moad al-Dbissi, Paolo Vinai, Alessandro Borella et al
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. Vol. 1026
Journal article
2021

Development and test of a novel neutronic verification scheme for Molten Salt Reactors

Christophe Demaziere, Antonios Mylonakis, Paolo Vinai
Transactions of the American Nuclear Society. Vol. 124 (1), p. 504-507
Paper in proceeding
2021

Detection and localisation of multiple in-core perturbations with neutron noise-based self-supervised domain adaptation

A. Durrant, G. Leontidis, S. Kollias et al
Proc. Int. Conf. Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C2021)
Paper in proceeding
2021

CORE SIM+: A flexible diffusion-based solver for neutron noise simulations

Antonios Mylonakis, Paolo Vinai, Christophe Demaziere
Annals of Nuclear Energy. Vol. 155
Journal article
2021

Comparison of neutron noise solvers based on numerical benchmarks in a 2-D simplified UOX fuel assembly

Paolo Vinai, Huaiqian Yi, Antonios Mylonakis et al
Proc. Int. Conf. Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C2021)
Paper in proceeding
2021

Feature extraction and identification techniques for the alignment of perturbation simulations with power plant measurements

G. Ioannou, T. Tasakos, Antonios Mylonakis et al
Proc. Int. Conf. Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C2021), p. 2048-2059
Paper in proceeding
2021

On the simulation of neutron noise using a discrete ordinates method

Huaiqian Yi, Paolo Vinai, Christophe Demaziere
Annals of Nuclear Energy. Vol. 164
Journal article
2021

Analysis of the neutron noise induced by fuel assembly vibrations

Andrea Zoia, Amélie Rouchon, Baptiste Gasse et al
Annals of Nuclear Energy. Vol. 154
Journal article
2020

Acceleration of a 2-dimensional, 2-energy group neutron noise solver based on a discrete ordinates method in the frequency domain

Huaiqian Yi, Paolo Vinai, Christophe Demaziere
International Conference on Physics of Reactors: Transition to a Scalable Nuclear Future, PHYSOR 2020. Vol. 2020-March, p. 2922-2929
Paper in proceeding
2020

Monte Carlo-based dynamic calculations of stationary perturbations

Christophe Demaziere, Andreas Tatidis, Paolo Vinai
International Conference on Physics of Reactors: Transition to a Scalable Nuclear Future, PHYSOR 2020. Vol. 2020-March
Paper in proceeding
2020

Neutron noise-based anomaly classification and localization using machine learning

Christophe Demaziere, Antonios Mylonakis, Paolo Vinai et al
International Conference on Physics of Reactors: Transition to a Scalable Nuclear Future, PHYSOR 2020. Vol. 2020-March, p. 2913-2921
Paper in proceeding
2020

Numerical solution of two-energy-group neutron noise diffusion problems with fine spatial meshes

Antonios Mylonakis, Paolo Vinai, Christophe Demaziere
Annals of Nuclear Energy. Vol. 140
Journal article
2020

CORE SIM+ simulations of COLIBRI fuel rods oscillation experiments and comparison with measurements

Antonios Mylonakis, Christophe Demaziere, Paolo Vinai et al
International Conference on Physics of Reactors: Transition to a Scalable Nuclear Future, PHYSOR 2020. Vol. 2020-March, p. 2930-2938
Paper in proceeding
2019

Neutron noise modelling for nuclear reactor diagnostics

Antonios Mylonakis, Paolo Vinai, Christophe Demaziere
HNPS Advances in Nuclear Physics. Vol. 26, p. 139-143
Paper in proceeding
2019

Neutron noise simulations in a heterogeneous system: A comparison between a diffusion-based and a discrete ordinates solver

Antonios Mylonakis, Huaiqian Yi, Paolo Vinai et al
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019, p. 439-448
Paper in proceeding
2019

A discrete ordinates solver with diffusion synthetic acceleration for simulations of 2-D and 2-energy group neutron noise problems

Huaiqian Yi, Paolo Vinai, Christophe Demaziere
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019, p. 2023-2032
Paper in proceeding
2019

Development and test of a hybrid probabilistic-deterministic framework based on the interface current method

Huaiqian Yi, Christophe Demaziere, Paolo Vinai et al
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019, p. 2166-2177
Paper in proceeding
2019

Assessment of the neutron noise induced by stationary fuel assembly vibrations in a light water reactor

Vasudha Verma, Christophe Demaziere, Paolo Vinai et al
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019. Vol. 2019, p. 1124-1133
Paper in proceeding
2019

Development of a frequency-domain reactor noise simulator based on a neutron transport method

Huaiqian Yi, Paolo Vinai, Christophe Demaziere
Conference poster
2019

Two-level multigrid preconditioning of a neutron noise diffusion solver

Antonios Mylonakis, Paolo Vinai, Christophe Demaziere
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019, p. 1208-1217
Paper in proceeding
2018

JHR neutron deterministic calculation scheme improvement thanks to Monte Carlo analysis in depletion

Julien Potitello, Florence Jeury, Lionel Gaubert et al
International Conference on Physics of Reactors, PHYSOR 2018: Reactor Physics Paving the Way Towards More Efficient Systems. Vol. Part F168384-2, p. 1098-1109
Paper in proceeding
2018

A deep learning approach to anomaly detection in nuclear reactors

Francesco Calivá, Fabio De Sousa Ribeiro, Antonios Mylonakis et al
Proceedings of the International Joint Conference on Neural Networks. Vol. 2018-July
Paper in proceeding
2018

Overview of the CORTEX project

Christophe Demaziere, Paolo Vinai, Mathieu Hursin et al
International Conference on Physics of Reactors, PHYSOR 2018: Reactor Physics Paving the Way Towards More Efficient Systems. Vol. Part F168384-5, p. 2971-2980
Paper in proceeding
2018

A sensitivity study for reactor neutron noise calculations with a neutron absorber of variable strength

Huaiqian Yi, Paolo Vinai, Christophe Demaziere
International Conference on Physics of Reactors, PHYSOR 2018: Reactor Physics Paving the Way Towards More Efficient Systems. Vol. Part F168384-5, p. 3017-3028
Paper in proceeding
2018

Assessment of criteria for Onset of Flow Instability in vertical narrow rectangular channels with downward flow

Alberto Ghione, Brigitte Noel, Paolo Vinai et al
12th International Topical Meeting on Nuclear Reactor Thermal-Hydraulics, Operation and Safety (NUTHOS-12)
Paper in proceeding
2017

Noise-based core monitoring and diagnostics – Overview of the CORTEX project

Christophe Demaziere, Paolo Vinai, Mathieu Hursin et al
Proc. 3rd DAE-BRNS Symposium on Advances in Reactor Physics (ARP-2017), Mumbai, India, December 6-9, 2017
Paper in proceeding
2017

Uncertainty and sensitivity analysis for the simulation of a station blackout scenario in the Jules Horowitz Reactor

Alberto Ghione, Brigitte Noel, Paolo Vinai et al
Annals of Nuclear Energy. Vol. 104, p. 28-41
Journal article
2017

A numerical framework for bubble transport in a subcooled fluid flow

Klas Jareteg, Srdjan Sasic, Paolo Vinai et al
Journal of Computational Physics. Vol. 345, p. 373-403
Journal article
2017

Criteria for onset of flow instability in heated vertical narrow rectangular channels at low pressure: an assessment study

Alberto Ghione, Brigitte Noel, Paolo Vinai et al
International Journal of Heat and Mass Transfer. Vol. 105, p. 464-478
Journal article
2017

A deterministic against Monte-Carlo depletion calculation benchmark for JHR core configurations

Amalia Chambon, Paolo Vinai, Christophe Demaziere et al
Int. Conf. Mathematics & Computational Methods Applied to Nuclear Science & Engineering (M&C 2017), Jeju, Korea, April 16-20, 2017
Paper in proceeding
2016

Assessment of thermal–hydraulic correlations for narrow rectangular channels with high heat flux and coolant velocity

Alberto Ghione, Brigitte Noel, Paolo Vinai et al
International Journal of Heat and Mass Transfer. Vol. 99, p. 344-356
Journal article
2016

Assessment of Critical Heat Flux correlations in narrow rectangular channels

Alberto Ghione, Brigitte Noel, Paolo Vinai et al
Proceedings of the 11th International Topical Meeting on Nuclear Thermal Hydraulics, Operation and Safety (NUTHOS-11), Gyeongju, Korea, Oct. 9-13 2016
Paper in proceeding
2016

VALIDATION OF HORUS3D/N AGAINST TRIPOLI-4®D FOR CORE DEPLETION CALCULATION OF THE JULES HOROWITZ REACTOR

Amalia Chambon, Paolo Vinai, Christophe Demaziere et al
Proceedings of PHYSOR 2016: Unifying Theory and Experiments in the 21st Century, Sun Valley, Idaho, USA, May 1-5, 2016; Paper No. 15947. Vol. 1, p. 140-151
Paper in proceeding
2015

Coupled fine-mesh neutronics and thermal-hydraulics - modeling and implementation for PWR fuel assemblies

Klas Jareteg, Paolo Vinai, Srdjan Sasic et al
Annals of Nuclear Energy. Vol. 84, p. 244-257
Journal article
2015

A Two-fluid/DQMOM Methodology for Condensation in Bubbly Flow

Klas Jareteg, Srdjan Sasic, Paolo Vinai et al
The 16th International Conference on Fluid Flow Technologies (CMFF15), Budapest, Hungary
Paper in proceeding
2015

Wall superheat prediction in narrow rectangular channels under fully developed boiling of water at low pressures

Alberto Ghione, Brigitte Noel, Paolo Vinai et al
Proc. 16th Int. Topl. Mtg. Nuclear Reactor Thermal Hydraulics (NURETH-16). Vol. 10, p. 8360-8373
Paper in proceeding
2014

Modelling of a self-sustained density wave oscillation and its neutronic response in a three-dimensional heterogeneous system

Paolo Vinai, Christophe Demaziere, Victor Dykin
Annals of Nuclear Energy. Vol. 67, p. 41-48
Journal article
2014

Influence of an SN solver in a fine-mesh neutronics/thermal- hydraulics framework

Klas Jareteg, Paolo Vinai, Christophe Demaziere et al
Proceedings of the International Conference on Physics of Reactors, PHYSOR 2014
Paper in proceeding
2014

On the prediction of single-phase forced convection heat transfer in narrow rectangular channels

Alberto Ghione, Brigitte Noel, Paolo Vinai et al
Proceedings of the 10th International Topical Meeting on Nuclear Thermal-Hydraulics, Operation and Safety (NUTHOS-10), Okinawa, Japan, December 14-18, 2014, on CD-ROM, Paper No. 1116
Paper in proceeding
2014

Fine-mesh deterministic modeling of PWR fuel assemblies: Proof-of-principle of coupled neutronic/thermal–hydraulic calculations

Klas Jareteg, Paolo Vinai, Christophe Demaziere
Annals of Nuclear Energy. Vol. 68, p. 247-256
Journal article
2013

INVESTIGATION OF THE POSSIBILITY TO USE A FINE-MESH SOLVER FOR RESOLVING COUPLED NEUTRONICS AND THERMAL-HYDRAULICS

Klas Jareteg, Paolo Vinai, Christophe Demaziere
International Conference on Mathematics and Computational Methods Applied to Nuclear Science & Engineering (M&C 2013) Sun Valley, Idaho, USA, May 5-9, 2013, on CD-ROM. Vol. 3, p. 2002-2013
Paper in proceeding
2013

Building a comprehensive nuclear education in Sweden

Anders Nordlund, Teodora Retegan Vollmer, Christophe Demaziere et al
Conference on Nuclear Training and Education 2013, CONTE 2013: An International Forum for Discussion of Issues Facing Nuclear Energy Training and Education, p. 40-
Paper in proceeding
2012

On the possible dependence of the decay ratio on the void reactivity feedback

Victor Dykin, Christophe Demaziere, Paolo Vinai
Transactions of the American Nuclear Society. Vol. 107, p. 1097-1100
Paper in proceeding
2011

Propagation of void fraction uncertainty measures in the RETRAN-3D simulation of the Peach Bottom turbine trip

Paolo Vinai, R. Macian, R. Chawla
Annals of Nuclear Energy. Vol. 38 (2-3), p. 358-370
Journal article
2009

An Assesment Study of the POLCA-T Code Based on NUPEC Data

Augusto Hernandéz Solís, Paolo Vinai, Ulf Bredolt
ANS Anual Meeting Transactions. Vol. 100, p. 750-751
Paper in proceeding
2009

An assessment study of the POLCA-T code based on NUPEC data

Augusto Hernandéz Solís, Paolo Vinai, Ulf Bredolt
Transactions of the American Nuclear Society. Vol. 100, p. 750-751
Paper in proceeding
2008

Propagation of void fraction uncertainly measures in the RETRAN-3D simulation of the Peach Bottom turbine trip

Paolo Vinai, R. Macian, R. Chawla
International Conference on the Physics of Reactors 2008, PHYSOR 08; Interlaken; Switzerland; 14 September 2008 through 19 September 2008. Vol. 3, p. 1959-1966
Paper in proceeding

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Showing 8 research projects

2023–2026

Nukleär icke-spridning och kärnämneskontroll

Paolo Vinai Subatomic, High Energy and Plasma Physics
The Swedish Radiation Safety authority (SSM)

1 publication exists
2023–

Core monitoring and diagnostics in SMRs using reactor neutron noise and machine learning

Paolo Vinai Subatomic, High Energy and Plasma Physics
Christophe Demaziere Subatomic, High Energy and Plasma Physics
Salma Hussein Subatomic, High Energy and Plasma Physics PP
Swedish Energy Agency

1 publication exists
2021–2022

A new approach to partial defect testing of spent nuclear fuel for safeguards applications

Paolo Vinai Subatomic, High Energy and Plasma Physics
The Swedish Radiation Safety authority (SSM)

3 publications exist
2020–2024

- Graduate Education Alliance for Teaching the Physics and Safety of Nuclear Reactors - GREaT-PIONEeR

Christophe Demaziere Subatomic, High Energy and Plasma Physics
Paolo Vinai Subatomic, High Energy and Plasma Physics
Christian Stöhr Engineering Education Research - EER (Chalmers)
European Commission (EC)

6 publications exist
2020–2025

Study of core stability during load follow with ROM methods

Christophe Demaziere Subatomic, High Energy and Plasma Physics
Paolo Vinai Subatomic, High Energy and Plasma Physics
The Swedish Radiation Safety authority (SSM)

1 publication exists
2019–2022

Development of a hybrid neutron transport framework for static and dynamic calculations and applications to fast reactor cores

Christophe Demaziere Subatomic, High Energy and Plasma Physics
Paolo Vinai Subatomic, High Energy and Plasma Physics
Swedish Research Council (VR)

2012–2016

DEterministic MOdelling of the Jules Horowitz Reactor (DEMO-JHR)

Christophe Demaziere Nuclear Engineering
Paolo Vinai Nuclear Engineering
Alberto Ghione Nuclear Engineering
Amalia Chambon Nuclear Engineering
Swedish Research Council (VR)

1 publication exists
2012–2013

Preparation for the infrastructures MYRRHA and ELECTRA (PRIME)

Anders Nordlund Nuclear Engineering
Paolo Vinai Nuclear Engineering
Christian Ekberg Nuclear Chemistry
Swedish Research Council (VR)

There might be more projects where Paolo Vinai participates, but you have to be logged in as a Chalmers employee to see them.