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KV

Katrien Van Tichelen

Belgian Nuclear Research Centre

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Co-Authors

Joris Degroote

Ghent University

F. Roelofs

Nuclear Research and Consultancy Group

Jeroen De Ridder

Ghent University

Philippe Planquart

Von Karman Institute for Fluid Dynamics

Jan Vierendeels

Ghent University Hospital

J. Pacio

Belgian Nuclear Research Centre

S. Keijers

Belgian Nuclear Research Centre

P. Schuurmans

Belgian Nuclear Research Centre

Graham Kennedy

Belgian Nuclear Research Centre

Ben De Pauw

Flanders Make (Belgium)

Cooperative Institutions

Belgian Nuclear Research Centre

KU Leuven

Karlsruhe Institute of Technology

Von Karman Institute for Fluid Dynamics

National Agency for New Technologies, Energy and Sustainable Economic Development

University of Pisa

Nuclear Research and Consultancy Group

Ghent University

Delft University of Technology

UCLouvain

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Investigation of the vacuum pump effect of free flowing liquid lead-bismuth eutectic

Nuclear Engineering and Design (2013)

K. Rosseel Katrien Van Tichelen S. Walsh Marc Dierckx P. Schuurmans

Vacuum pump

Thermal hydraulics

Liquid nitrogen

Bismuth

10.1016/j.nucengdes.2013.11.067

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Citations (1)

Predicting modal characteristics of a cluster of cylinders in axial flow: From potential flow solutions to coupled CFD–CSM calculations

Journal of Fluids and Structures (2017)

Jeroen De Ridder Joris Degroote Katrien Van Tichelen Jan Vierendeels

Potential flow

Added mass

Fluid–structure interaction

Flutter

10.1016/j.jfluidstructs.2017.07.006

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Citations (17)

Asymmetric Decay Heat Removal in MYRRHA: Experiments in the E-SCAPE Facility

J. Pacio Rui Serrano Diogo Katrien Van Tichelen

Scape

10.13182/nureth20-40342

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Scaling approach and forced-circulation flow patterns in the liquid metal-cooled reactor-pool experiment E-SCAPE

Nuclear Engineering and Design (2024)

Katrien Van Tichelen Fabio Mirelli M. Greco Yann Bartosiewicz William D’haeseleer

Scape

Liquid metal

Circulation (fluid dynamics)

Natural circulation

Liquid flow

10.1016/j.nucengdes.2024.113361

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Citations (1)

CFD and experiments for wire-wrapped fuel assemblies

F. Roelofs Heleen Uitslag-Doolaard Blaž Mikuž D. Dovizio D. De Santis

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Citations (3)

EXPERIMENTAL ANALYSIS OF NATURAL CONVECTION IN A DIFFERENTIALLY HEATED CAVITY

Proceeding of International Heat Transfer Conference 9 (2023)

Tommaso Carlesi J. Oder Delphine Laboureur Philippe Planquart J. Pacio

10.1615/ihtc17.300-60

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Signal-to-noise ratio evaluation with draw tower fibre Bragg gratings (DTGs) for dynamic strain sensing at elevated temperatures and corrosive environment

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2014)

Ben De Pauw Alfredo Lamberti Steve Vanlanduit Katrien Van Tichelen Thomas Geernaert

Measuring strain at the surface of a structure can help to estimate the dynamical properties of the structure under test. Such a structure can be a fuel assembly of a nuclear reactor consisting of fuel pins. In this paper we demonstrate a method to integrate draw tower gratings (DTGs) in a fuel pin and we subject this pin to conditions close to those encountered in a heavy liquid metal (HLM) reactor. More specifically, we report on the performance of DTGs used as a strain sensor when immersed in HLM during thermal cycles (up to 300_C) for up to 700 hours.

Strain (injury)

Fiber Bragg Grating

SIGNAL (programming language)

Transient (computer programming)

10.1117/12.2059504

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Citations (6)

Advanced Thermal-Hydraulic experiments and instrumentation for heavy liquid metal reactors

Nuclear Engineering and Design (2022)

J. Pacio Katrien Van Tichelen Sven Eckert Thomas Wondrak I. Di Piazza

Liquid metal

Thermal hydraulics

Instrumentation

Natural circulation

Decay heat

10.1016/j.nucengdes.2022.112010

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Citations (12)

Characterizing Flow-Induced Vibrations of Fuel Assemblies for Future Liquid Metal Cooled Nuclear Reactors Using Quasi-Distributed Fibre-Optic Sensors

Applied Sciences (2017)

Ben De Pauw Graham Kennedy Katrien Van Tichelen Thomas Geernaert Hugo Thienpont

Excessive vibration of nuclear reactor components, such as the heat exchanger or the fuel assembly should be avoided as these can compromise the lifetime of these components and potentially lead to safety hazards. This issue is particularly relevant to new reactor designs that use liquid metal coolants. However, identifying adequate sensors or techniques that can be successfully applied to record the vibrations of the components in a flow of liquid metal at elevated temperatures is very challenging. In this paper, we demonstrate the precise measurements of the vibrations of a very representative mock-up of a fuel assembly in a lead-bismuth eutectic cooled installation using quasi-distributed fibre Bragg grating (FBG) based sensors. The unique properties of these sensors, in combination with a dedicated integration and mounting approach, allows for accounting of the severe geometrical constraints and allows characterizing the vibration of the fuel assembly elements under nominal operation conditions. To that aim, we instrumented a single fuel pin within the fuel assembly with 84 FBGs, and conducted spectral measurements with an acquisition rate of up to 5000 measurements per second, enabling the monitoring of local strains of a few με. These measurements provide the information required to assess vibration-related safety hazards.

Liquid metal

10.3390/app7080864

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Citations (14)

Modal characteristics of a flexible tube in turbulent axial flow: a numerical approach and validation with experimental data

COUPLED V : proceedings of the V International Conference on Computational Methods for Coupled Problems in Science and Engineering : (2013)

Jeroen De Ridder Joris Degroote Katrien Van Tichelen P. Schuurmans Jan Vierendeels

Flow-induced vibration is an important concern in the design of tube bundles. Due to the coupling of fluid motion and structural motion, instabilities such as flutter and divergence can arise. Next to the instabilities caused by the coupling of fluid motion and structural motion, turbulence will cause small amplitude vibrations, which in turn could give rise to long-term damage. Currently, the dynamical behavior of a tube in axial flow is studied by splitting the flow forces into inviscid and viscous components. The inviscid flow forces are determined from potential flow theory while the viscous flow forces come from empirical formulations. In this paper, a computational methodology is proposed to improve the accuracy of the predicted dynamical behaviour. In this methodology partitioned fluid-structure interaction simulations are performed to calculate the free vibration decay of a tube in axial flow. The tube is initially deformed according to an eigenmode in vacuum. Modal characteristics are then derived from the free vibration decay of the tube surrounded by the turbulent water flow. To validate this computational methodology a series of experiments is reproduced. In these experiments the frequency and damping of the fundamental mode of a solid brass cylinder were measured.

Inviscid flow

Flutter

Vortex-induced vibration

Added mass

Potential flow

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