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UID:04d163b59fc82bd3ef53822d527669be
DTSTAMP:20261007T100258Z
SUMMARY:PhD Defense : Wind tunnel experiments of a model scale wind turbine
  and its digital twin based on Large Eddy Simulation by Emmanuel GILLYNS (
 TFL)
DESCRIPTION:This dissertation addresses a critical challenge in wind energy
  research: accurately predicting wind turbine wakes using Large Eddy Simul
 ation (LES)\, which depends heavily on high-quality experimental validatio
 n data.The work introduces a new model-scale wind turbine called TWIST (Tu
 rbine for Wind tunnel Investigation &amp\; Scaled Testing)\, designed and 
 experimentally characterized in a controlled wind tunnel environment with 
 detailed hot-wire measurements. On the numerical side\, several methodolog
 ical advances enable cost-efficient and physically consistent LES\, includ
 ing wall-modeled LES implementation\, novel inflow control methods (RPS an
 d ACTIF)\, and a continuous Actuator Line Model (cALM) for representing tu
 rbine aerodynamics.These developments are integrated into an LES-based dig
 ital twin of the TWIST experiment. Comparisons with experimental measureme
 nts show that the framework captures essential near-wake flow features and
  reproduces observed trends under varying operating conditions\, demonstra
 ting strong predictive quality. Overall\, this combined experimental-numer
 ical approach provides a solid foundation for future investigations of win
 d turbine wakes and more reliable LES-based tools for wind energy research
 .Membres du jury :Prof. Grégoire Winckelmans&nbsp\; (UCLouvain)(Promoteur
 )Prof. Renaud Ronsse&nbsp\; (UCLouvain) (Président)Dr. Matthieu Duponchee
 l&nbsp\; (UCLouvain) (Secrétaire)Prof. Jeroen van Beeck (von Karman Insti
 tute) (Co-promoteur)&nbsp\;Prof. Joris Degroote (UGent)Prof. Sandrine Aubr
 un (École Centrale Nantes)Dr. Sophia Buckingham (ENGIE Laborelec)&nbsp\;S
 outenance publique également accessible par visio-conférence via le lien
  (TEAMS) :https://teams.microsoft.com/meet/35513448113251?p=o966pBIJhilmKK
 ie2dMeeting ID: 355 134 481 132 51Passcode: ym76Qt68
URL:https://uclouvain.be/fr/calendar/immc
DTSTART;TZID=Europe/Brussels:20261021T161500
DTEND;TZID=Europe/Brussels:20261021T181500
LOCATION:Place Montesquieu 1348 Louvain-la-Neuve
END:VEVENT
BEGIN:VEVENT
UID:7498f7fbdcce3cfbfb6c346ee80c21da
DTSTAMP:20261007T100258Z
SUMMARY:Electrochemical production of calcium hydroxide for more sustainabl
 e lime and cement manufacturing by Rémy ROUXHET (IMAP)
DESCRIPTION:From fundamental principles to experimental developmentsHuman a
 ctivities have pushed several planetary boundaries beyond their safe opera
 ting limits\, calling for a profound transformation towards a more sustain
 able society. Achieving a sustainable society requires\, notably\, profoun
 d changes in industrial production. Among the most challenging sectors\, t
 he cement and lime industries remain major contributors to global CO2 emis
 sions. In this context\, this thesis investigates a novel electrochemical 
 pathway for calcium hydroxide production. This approach offers the potenti
 al to fundamentally redesign lime and cement manufacturing with a reduced 
 environmental footprint\, although it currently remains at a low technolog
 y readiness level. The process was experimentally investigated in two-comp
 artment cells. Excess and batch feedstock addition strategies\, as well as
  in-situ and ex-situ precipitation methods\, were compared. Based on the t
 heoretical framework developed in this work and experimental results\, key
  guidelines are established to achieve the desired stoichiometry throughou
 t water electrolysis\, feedstock dissolution\, ion migration\, and calcium
  hydroxide precipitation. The limited CO2 recovery caused by gas-liquid ma
 ss transfer limitations was identified\, and strategies to overcome this l
 imitation are proposed. Membrane fouling\, responsible for voltage instabi
 lity\, was characterized under various operating conditions and strategies
  to prevent calcium carbonate contamination during ex-situ precipitation a
 re provided. The influence of various natural feedstocks was also investig
 ated. The effect of particle size distribution on dissolution\, the congru
 ence of impurity dissolution\, and the feasibility of using reclaimed mort
 ar as an alternative feedstock were assessed. The properties of the result
 ing calcium hydroxide products were compared. Finally\, the energy require
 ments and prospective CO2 emissions of the process are assessed together w
 ith other environmental implications. This work establishes the fundamenta
 l principles governing electrochemical calcium hydroxide production and pr
 ovides a coherent framework for its future scale-up. The findings also dem
 onstrate the potential of the electrochemical route to improve both proces
 s performance and the sustainability of lime and cement production.&nbsp\;
 Membres du jury :Prof. Joris Proost (UCLouvain)(Promoteur)Prof. Paul Fiset
 te (UCLouvain) (Président)Prof. Patricia Luis Alconero (UCLouvain) (Secr
 étaire)Prof. Tom Leyssens (UCLouvain)&nbsp\;Prof. Diane Thomas (UMons)Dr.
  Aurélien Chardon (Carmeuse)&nbsp\;Soutenance publique également accessi
 ble par visio-conférence via le lien (TEAMS) :&nbsp\;https://teams.micros
 oft.com/meet/342087054716503?p=RZyhRoDKFJUO9ZWZwW
URL:https://uclouvain.be/fr/calendar/immc
DTSTART;TZID=Europe/Brussels:20261112T170000
DTEND;TZID=Europe/Brussels:20261112T190000
LOCATION:Place des Sciences 2 1348 Louvain-la-Neuve
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