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The IMobS3 Labex

The IMobS³ "Laboratoire d'Excellence" (for "Innovative Mobility : Smart and Sustainable Solutions") aims to develop efficient and environmentally aware technological bricks for an innovative mobility of people, goods and machines by playing on the triptych "Research - Education - Promotion".

The IMobS³ LabEx is supported by 4 establishments present in Clermont site (the new Clermont Auvergne University - project leader, CNRS, INRAE and Cerema. It is based on the multidisciplinary and complementary skills of eight laboratories (ACTé, DLCF-Cerema, LAPSCO, LIMOS, LMBP, ICCF, Pascal Institute, TSCF-INRAE) placed under the supervision of these institutions often in the form of mixed research units.

In February 2017, the Clermont University community obtained the label I-Site "Initiatives - Science - Innovation - Territories - Economy" with the project CAP 20-25. This label aims to structure the University thanks to the successes acquired during the Future Investment Programmes first call. LabEx IMobS³ is proving to be the Challenge 2 "Innovative systems and services for the production and the transports" cornerstone.

Futur events

07/07/2021 : PhD Defense - Youssef Bouaziz

On Monday, July 7 at 9:00 am, Mr. Youssef Bouaziz will publicly present his PhD thesis entitled:

"Visual SLAM with automatic map update in a dynamic environment".

Place: Amphi Recherche du pôle Physique, Campus des Cézeaux, 63178 AUBIERE

The work will be presented to the following jury:
- Rémi Boutteau (President of the jury - University of Rouen Normandie)
- Simon Lacroix (Rapporteur - LAAS/CNRS)
- Michèle Rombaut (Rapporteur - University of Grenoble Alpes)
- Michel Dhome (Thesis Director - CNRS)
- Eric Royer (Co-supervisor - University of Clermont Auvergne)
- Guillaume Bresson (Co-supervisor - Vedecom Institute)

ABSTRACT

04/06/2021 : Seminar "Intelligent vehicles and machines"

The "Intelligent Vehicles and Machines" challenge of the IMobS³ LabEx is organising a seminar to be held remotely in order to take stock of current projects.

Date: Friday, June 4, 2021 from 1:30 pm.

Access to the seminar

25/01/2021 : PhD Defense Victor GATTEPAILLE

On Monday 25 January at 14:00, Mr Victor Gattepaille will publicly defend his doctoral thesis entitled:

"Multi-scale models of solar photobioreactors and Monte Carlo method"

Link : https://us02web.zoom.us/j/89618473717?pwd=UXdqTHRlUEFrN1Mwc3U1RSszQlBkUT09

Meeting ID: 896 1847 3717
Passcode: 624950

The work will be presented to the following jury:

- Mr Frédéric HOURDIN, Research Director, CNRS - LMD, Paris (Rapporteur)
- Mr. Rodolphe VAILLON, Research Director, CNRS - IES, Montpellier (Rapporteur)
- Mr Mathieu GALTIER, Senior Lecturer, INSA, Lyon (Examiner)
- Mrs. Mouna EL-HAFI, Professor, IMT - Mines Albi (Examiner)
- Mr. Jérémi PRUVOST, Professor, University of Nantes, Saint-Nazaire (Examiner)
- Mr Stéphane BLANCO, Senior Lecturer, Paul Sabatier University, Toulouse (Guest)
- Mr. Jean-François Cornet (Thesis Director)
- Mr. Jérémi Dauchet (Co-supervisor)

18/12/2020 : PhD Defense - Seyfeddine BOUKHTACHE

On Friday, December 18 at 9:00 am, Mr. Seyfeddine Boukhtache will publicly and remotely defend his PhD thesis entitled:

"Real time image processing system dedicated to the measurement of dense fields of displacements and deformations"

This defense can be followed remotely with the following Teams link:

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The work will be presented to the following jury:
- François BERRY, Professor of Universities Section 61, University of Clermont Auvergne, co-director of the thesis
- Benoît BLAYSAT, Senior Lecturer HDR Section 60, University of Clermont Auvergne, co-director of the thesis
- Virginie FRESSE Senior Lecturer HDR Section 61, Jean Monnet University
- Dominique GINHAC, University Professor Section 61, University of Burgundy
- Michel GREDIAC, University Professor, Section 60, University of Clermont Auvergne, thesis co-supervisor
- Jean-Charles PASSIEUX, University Professor Section 60, INSA Toulouse
- Frédéric SUR, University Professor Section 27, University of Lorraine

17/12/2020 : PhD Defense - Caroline SUPPLIS

On Thursday 17 December at 9:30 am, Ms Caroline Supplis will publicly and remotely defend her PhD thesis entitled:

"Modelling and experimental study of solar hydrogen production in a photoreactor"

Link : https://us02web.zoom.us/j/86862507446?pwd=VmVMQ0tiMGo3U2xWK3pGM0lhQmNBdz09

Meeting ID: 868 6250 7446
Passcode: 185713

The work will be presented to the following jury:
- Cyril Caliot (Rapporteur)
- Karine Loubière (Rapporteur)
- Murielle Chavarot-Kerlidou (Examiner)
- Frédéric Gloaguen (Examiner)
- Gaël Plantard (Examiner)
- Jean-François Cornet (Thesis Director)
- Jérémi Dauchet (Co-supervisor)
- Fabrice Gros (Co-supervisor)

ABSTRACT

As part of the energy transition, converting solar energy into fuels suitable for mobility appears to be a promising
solution. One of the first accessible is undoubtedly hydrogen, which can be obtained by photodissociation of the water molecule
under the effect of radiation absorbed by a photocatalytic system. This mechanism is known as artificial photosynthesis. The
challenge is serious because it is necessary to find effective and inexpensive chemical systems but also to design, develop and
optimize the photoreactive processes implementing these reactions, in the long term on a large scale. This last objective can only
be achieved in a reasonable time if we have predictive and generic models that integrate the physical phenomena describing the
underlying scales having an impact on the observables of the process.
This work is concerned with the modeling of a photoreactor limited and controlled by photon transport implementing
photocatalytic systems for the production of solar hydrogen as well as its experimental validation. The model begins with the
determination of the optical and radiative properties of the studied photocatalytic system which falls under electromagnetism.
Then, solving the Radiative Transfer Equation (RTE), with elastic or inelastic scattering depending on the practical case, provides
access to the local volumetric rate of photons absorbed within the photoreactor. Finally, the formulation of a thermokinetic
coupling law and an average on the scale of the reactor make it possible to determine the observables which are the average
volumetric rate of hydrogen production and energy efficiency. An optical bench equipped with an integrating sphere allows
experimental validation of the radiative properties. A study bench composed mainly of LED light sources and a gas tight planar
photoreactor filled with a photoreactive medium provides access to experimental observables via a measurement of the pressure
in the gas headspace of the reactor for several flux incident photon flux density values and photocatalyst concentrations. The
model is then used to identify from the experiments a single lumped parameter for the kinetic constants of the reaction. Two
photocatalytic systems representative of the diversity of systems studied in the literature have been implemented: 1) a molecular
system with a bio-inspired catalyst for protons reduction in homogeneous phase and 2) a system based on micrometric particles of
CdS (semiconductors) with or without MoS2 cocatalyst in heterogeneous phase.
The model ultimately makes it possible to study and optimize various engineering parameters determining the kinetic and
energy performances of the photoreactive process, depending on its geometry and the solar operating conditions. The possibility
of achieving very significant energy efficiency gains by developing photoreactors with internal radiation dilution is highlighted.

Langues

A heliostat made by EMS FOCUS soon on EcoPAVIN-Solar platform

Seminar "Intelligent vehicles and machines" - 04/06/2021

AURA synthesis of the DGPIE of the ANR

OrbiMob'2020

Scientific challenges

Challenge 1

Challenge 2

Challenge 3