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Papers by Philippe Planquart

Research paper thumbnail of Quantitative measurements of heat transfer coefficient of impinging round jets at high Reynolds number on a perpendicular and inclined heated plate

Research paper thumbnail of Electrothermal Ice Protection Systems De-Icing: An Experimentally Validated Idealized Ice Shedding Model

AIAA Journal

The increased use of electrothermal ice protection systems (ETIPSs) in various industries (manned... more The increased use of electrothermal ice protection systems (ETIPSs) in various industries (manned and unmanned aviation, energy production) requires improvements to de-icing efficiency, ice shedding predictability, and energy consumption. To achieve these, a coupled numerical and experimental investigation of ETIPS’s ice removal (ice shedding) mechanism is presented in this paper. Idealized ETIPS de-icing experiments performed in the icing wind tunnel of the von Karman Institute show several ice shedding mechanisms. A one-dimensional phase change solver developed for ice melting simulations highlights the water layer thickness influence over the ice shedding process. Coupled numerical–experimental results are employed to develop an idealized ice shedding model. The model is validated in realistic de-icing experiments in a second experimental campaign in the icing wind tunnel of the LeClerc Icing Research Laboratory.

Research paper thumbnail of Calibration of a 1D Ejector Model from Full-Scale Experiments

Proceeding of 8th Thermal and Fluids Engineering Conference (TFEC)

Research paper thumbnail of Caractérisation par technique PIV des écoulements moyens et transitoires dans un modèle à eau d'un réacteur de recherche

HAL (Le Centre pour la Communication Scientifique Directe), Sep 17, 2018

Research paper thumbnail of The SESAME project. State of the art liquid metal thermal hydraulics and beyond

Atw. Internationale Zeitschrift fuer Kernenergie, 2017

Research paper thumbnail of CFD Wind Tunnel Assessment on the case study of the MOTHIF Blown Flap

IOP Conference Series: Materials Science and Engineering, 2022

The increasing interest in Small Air Transportation (SAT), to enhance global connectivity, is hig... more The increasing interest in Small Air Transportation (SAT), to enhance global connectivity, is highlighting the need for reducing take-off distance: lift coefficient has to be increased without penalizing the configuration drag, weight and complexity. Within the EU Clean Sky 2 projects, a blown flap configuration has been developed to allow STOL capabilities of a future affordable and green commuter belonging to EASA CS 23. The blowing system design choice is aimed at keeping the inevitable associated increase in pitching moment very low, and not penalizing performance when blowing fails. In collaboration between Piaggio Aerospace and the MOTHIF consortium, a wing model was designed, built and tested in the VKI’s large subsonic L1-A wind tunnel, reproducing bi-dimensional preliminary results obtained during the design phase. In order to reduce and predict three dimensional and blockage effects, CFD has been used extensively to obtain a proper test chamber configuration and to reprodu...

Research paper thumbnail of Experimental and Numerical Investigation of the Flow Around the Appendices of a Whitbread 60 Sailing Yacht

In this paper, the authors present results obtained experimentally and numerically during the stu... more In this paper, the authors present results obtained experimentally and numerically during the study of the flow around the appendices of a Whitbread 60 sailing yacht. Experiments are carried out in a wind tunnel on a model of reduced scale (1/15). Force measurements are made using a three component balance. Two different bulbs are tested for different angle of attack. Velocity measurements are made using the Particle Image Velocimetry (P.I.V.) technique and a hot wire anemometer. Vortex shedding frequencies are computed from the P.I.V. results and drag values are obtained from the velocity measurements in a plane behind the bulb (wake survey analysis). The experimental results are used to validate the numerical simulations performed using the commercial code FLUENT 5.2. Different turbulence models are compared and a good agreement between the experimental and numerical results was found with the use of the standard k-e turbulence model and wall functions.

Research paper thumbnail of Fluid mechanics and chemistry for safety issues in HLM nuclear reactors : November 25-27, 2013

Research paper thumbnail of Simultaneous measurements of velocity and temperature fluctuations in low Prandtl number fluids

The MYRRHA reactor is designed by the Belgian Nuclear Research Centre, SCK•CEN, and uses a heavy ... more The MYRRHA reactor is designed by the Belgian Nuclear Research Centre, SCK•CEN, and uses a heavy liquid metal (HLM) as the primary coolant. This liquid is characterized by a low Prandtl number (Pr = 0.025) and such fluids exhibit significant differences in thermal behaviour that cannot be reproduced by the existing turbulent heat transfer models. Consequently, for CFD simulations to accurately predict thermal stresses and help in the design of HLM reactors, more advanced models need to be developed. However, the basic problem is that there is limited experimental data available at low Prandtl number, and it is limited to confined channel flows. To answer these needs, the MYRTE project aims at generating a validation database for non-confined flows. A new wind tunnel had been built at The von Karman Institute in order to test a moderately low Prandtl number (Pr = 0.2) gas mixture (He-Xe). The purpose of these test campaigns is be to produce validation data for LES simulations and imp...

Research paper thumbnail of Numerical noise prediction of a generic flap configuration

Research paper thumbnail of Hunting for the correct pressure drop in a scaled reactor pool: Effect of geometry, mesh resolution, turbulence model and mass flow

Nuclear Engineering and Design, 2021

Research paper thumbnail of Best practice guidelines for nuclear liquid metal CFD

Thermal Hydraulics Aspects of Liquid Metal Cooled Nuclear Reactors, 2019

Abstract Performing good-quality computational fluid dynamics (CFD) simulations is not an easy ta... more Abstract Performing good-quality computational fluid dynamics (CFD) simulations is not an easy task as the CFD engineer has to judge whether the results of the simulation can be trusted. While reality is continuous in space and time, computers work in the discrete domain. This chapter refers in the basis to generic existing CFD best practice guidelines but elaborates on the specific guidelines that arise from the simulation of liquid metals. The guidelines are provided following the structure of simulation, that is, preprocessing, simulation (or processing), and postprocessing. Finally, the most relevant guidelines specific for nuclear liquid-metal CFD simulations are summarized.

Research paper thumbnail of Numerical modeling of iron-based corrosion product oxides mass transport in the MYRRHA reactor during normal operation

Nuclear Engineering and Design, 2018

Research paper thumbnail of Advanced Liquid-Metal Thermal-Hydraulic Research for MYRRHA

Research paper thumbnail of CFD analysis of the erosion of a light gas stratification by means of a hot air jet in the MiniPanda facility

International Journal of Heat and Fluid Flow, 2019

Research paper thumbnail of Experimental investigation of accidental scenarios using a scale water model of a HLM reactor

Nuclear Engineering and Design, 2019

Research paper thumbnail of Description of a New Wind Tunnel to Study Heat Transfer Phenomena in a Gas Mixture at Low Prandtl Number

International Heat Transfer Conference 16, 2018

Research paper thumbnail of Simulation of fuel dispersion in the MYRRHA-FASTEF primary coolant with CFD and SIMMER-IV

Nuclear Engineering and Design, 2015

Research paper thumbnail of Cold flow tests for flow field and deformation characteristics of the PTF membrane from the PODX

Research paper thumbnail of IHTC15-8596 Study of Thermal Conductance in a Strip-Roll System

The paper describes an experimental investigation carried out on a semi-industrial prototype of r... more The paper describes an experimental investigation carried out on a semi-industrial prototype of regenerative roll quench unit to determine the contact thermal conductance (CTC) between a roll and a moving strip. The quantitative infrared thermograpy allows the temperature mapping of the strip while the angular evolution of the roll temperature is obtained by mean of thermocouples connected to a telemetry acquisition system. A thermal model allows the determination of the CTC. Typical results emphasize the effect of some parameters such as the velocity, the temperature and the tensile strength of the strip.

Research paper thumbnail of Quantitative measurements of heat transfer coefficient of impinging round jets at high Reynolds number on a perpendicular and inclined heated plate

Research paper thumbnail of Electrothermal Ice Protection Systems De-Icing: An Experimentally Validated Idealized Ice Shedding Model

AIAA Journal

The increased use of electrothermal ice protection systems (ETIPSs) in various industries (manned... more The increased use of electrothermal ice protection systems (ETIPSs) in various industries (manned and unmanned aviation, energy production) requires improvements to de-icing efficiency, ice shedding predictability, and energy consumption. To achieve these, a coupled numerical and experimental investigation of ETIPS’s ice removal (ice shedding) mechanism is presented in this paper. Idealized ETIPS de-icing experiments performed in the icing wind tunnel of the von Karman Institute show several ice shedding mechanisms. A one-dimensional phase change solver developed for ice melting simulations highlights the water layer thickness influence over the ice shedding process. Coupled numerical–experimental results are employed to develop an idealized ice shedding model. The model is validated in realistic de-icing experiments in a second experimental campaign in the icing wind tunnel of the LeClerc Icing Research Laboratory.

Research paper thumbnail of Calibration of a 1D Ejector Model from Full-Scale Experiments

Proceeding of 8th Thermal and Fluids Engineering Conference (TFEC)

Research paper thumbnail of Caractérisation par technique PIV des écoulements moyens et transitoires dans un modèle à eau d'un réacteur de recherche

HAL (Le Centre pour la Communication Scientifique Directe), Sep 17, 2018

Research paper thumbnail of The SESAME project. State of the art liquid metal thermal hydraulics and beyond

Atw. Internationale Zeitschrift fuer Kernenergie, 2017

Research paper thumbnail of CFD Wind Tunnel Assessment on the case study of the MOTHIF Blown Flap

IOP Conference Series: Materials Science and Engineering, 2022

The increasing interest in Small Air Transportation (SAT), to enhance global connectivity, is hig... more The increasing interest in Small Air Transportation (SAT), to enhance global connectivity, is highlighting the need for reducing take-off distance: lift coefficient has to be increased without penalizing the configuration drag, weight and complexity. Within the EU Clean Sky 2 projects, a blown flap configuration has been developed to allow STOL capabilities of a future affordable and green commuter belonging to EASA CS 23. The blowing system design choice is aimed at keeping the inevitable associated increase in pitching moment very low, and not penalizing performance when blowing fails. In collaboration between Piaggio Aerospace and the MOTHIF consortium, a wing model was designed, built and tested in the VKI’s large subsonic L1-A wind tunnel, reproducing bi-dimensional preliminary results obtained during the design phase. In order to reduce and predict three dimensional and blockage effects, CFD has been used extensively to obtain a proper test chamber configuration and to reprodu...

Research paper thumbnail of Experimental and Numerical Investigation of the Flow Around the Appendices of a Whitbread 60 Sailing Yacht

In this paper, the authors present results obtained experimentally and numerically during the stu... more In this paper, the authors present results obtained experimentally and numerically during the study of the flow around the appendices of a Whitbread 60 sailing yacht. Experiments are carried out in a wind tunnel on a model of reduced scale (1/15). Force measurements are made using a three component balance. Two different bulbs are tested for different angle of attack. Velocity measurements are made using the Particle Image Velocimetry (P.I.V.) technique and a hot wire anemometer. Vortex shedding frequencies are computed from the P.I.V. results and drag values are obtained from the velocity measurements in a plane behind the bulb (wake survey analysis). The experimental results are used to validate the numerical simulations performed using the commercial code FLUENT 5.2. Different turbulence models are compared and a good agreement between the experimental and numerical results was found with the use of the standard k-e turbulence model and wall functions.

Research paper thumbnail of Fluid mechanics and chemistry for safety issues in HLM nuclear reactors : November 25-27, 2013

Research paper thumbnail of Simultaneous measurements of velocity and temperature fluctuations in low Prandtl number fluids

The MYRRHA reactor is designed by the Belgian Nuclear Research Centre, SCK•CEN, and uses a heavy ... more The MYRRHA reactor is designed by the Belgian Nuclear Research Centre, SCK•CEN, and uses a heavy liquid metal (HLM) as the primary coolant. This liquid is characterized by a low Prandtl number (Pr = 0.025) and such fluids exhibit significant differences in thermal behaviour that cannot be reproduced by the existing turbulent heat transfer models. Consequently, for CFD simulations to accurately predict thermal stresses and help in the design of HLM reactors, more advanced models need to be developed. However, the basic problem is that there is limited experimental data available at low Prandtl number, and it is limited to confined channel flows. To answer these needs, the MYRTE project aims at generating a validation database for non-confined flows. A new wind tunnel had been built at The von Karman Institute in order to test a moderately low Prandtl number (Pr = 0.2) gas mixture (He-Xe). The purpose of these test campaigns is be to produce validation data for LES simulations and imp...

Research paper thumbnail of Numerical noise prediction of a generic flap configuration

Research paper thumbnail of Hunting for the correct pressure drop in a scaled reactor pool: Effect of geometry, mesh resolution, turbulence model and mass flow

Nuclear Engineering and Design, 2021

Research paper thumbnail of Best practice guidelines for nuclear liquid metal CFD

Thermal Hydraulics Aspects of Liquid Metal Cooled Nuclear Reactors, 2019

Abstract Performing good-quality computational fluid dynamics (CFD) simulations is not an easy ta... more Abstract Performing good-quality computational fluid dynamics (CFD) simulations is not an easy task as the CFD engineer has to judge whether the results of the simulation can be trusted. While reality is continuous in space and time, computers work in the discrete domain. This chapter refers in the basis to generic existing CFD best practice guidelines but elaborates on the specific guidelines that arise from the simulation of liquid metals. The guidelines are provided following the structure of simulation, that is, preprocessing, simulation (or processing), and postprocessing. Finally, the most relevant guidelines specific for nuclear liquid-metal CFD simulations are summarized.

Research paper thumbnail of Numerical modeling of iron-based corrosion product oxides mass transport in the MYRRHA reactor during normal operation

Nuclear Engineering and Design, 2018

Research paper thumbnail of Advanced Liquid-Metal Thermal-Hydraulic Research for MYRRHA

Research paper thumbnail of CFD analysis of the erosion of a light gas stratification by means of a hot air jet in the MiniPanda facility

International Journal of Heat and Fluid Flow, 2019

Research paper thumbnail of Experimental investigation of accidental scenarios using a scale water model of a HLM reactor

Nuclear Engineering and Design, 2019

Research paper thumbnail of Description of a New Wind Tunnel to Study Heat Transfer Phenomena in a Gas Mixture at Low Prandtl Number

International Heat Transfer Conference 16, 2018

Research paper thumbnail of Simulation of fuel dispersion in the MYRRHA-FASTEF primary coolant with CFD and SIMMER-IV

Nuclear Engineering and Design, 2015

Research paper thumbnail of Cold flow tests for flow field and deformation characteristics of the PTF membrane from the PODX

Research paper thumbnail of IHTC15-8596 Study of Thermal Conductance in a Strip-Roll System

The paper describes an experimental investigation carried out on a semi-industrial prototype of r... more The paper describes an experimental investigation carried out on a semi-industrial prototype of regenerative roll quench unit to determine the contact thermal conductance (CTC) between a roll and a moving strip. The quantitative infrared thermograpy allows the temperature mapping of the strip while the angular evolution of the roll temperature is obtained by mean of thermocouples connected to a telemetry acquisition system. A thermal model allows the determination of the CTC. Typical results emphasize the effect of some parameters such as the velocity, the temperature and the tensile strength of the strip.