ONE WEEK FOR CONNECTING THEORY
TO EXPERIMENTS AND NUMERICAL SIMULATIONS
The week includes theoretical sessions dealing with multiscale approaches in mechanics and numerical and experimental tools and methods, as well as practical sessions during which the
attendants will be dispatched in the laboratories to manipulate some of the most up-to-date equipment used in research.
The last day is dedicated to the specific problem of multiscale approaches in biomechanics.
ONE WEEK FOR CONNECTING THEORY
TO EXPERIMENTS AND NUMERICAL SIMULATIONS
The week includes theoretical sessions dealing with multiscale approaches in mechanics and numerical and experimental tools and methods, as well as practical sessions during which the attendants will be dispatched in the laboratories to manipulate some of the most up-to-date equipment used in research.The last day is dedicated to the specific problem of multiscale approaches in biomechanics.
8:30 Welcome coffee
9:00 Introduction
9:10 A brief introduction to fluid turbulence
In spite of centuries of active research Turbulence remains one of the deepest mysteries of fluid mechanics. The complexity relies on the random and multi-scale nature of the phenomenon. This lecture will review the origin and the characteristics of fluid Turbulence, as well as the phenomenological framework and statistical tools commonly used to describe the phenomenon. These rely on the concept of energy cascade, introduced by L. Richardson in the 1920’s, later refined by A. Kolmogorov, who’s ideas still dominate the Turbulence research community.
10:30 Coffee break
11:00 Multiscale approaches for the modelling and simulation of particle laden reactive flows
Dense gas-particle reactors are encountered in many industrial systems involving chemical reactions such as the polymerisation of PE and PP for plastic making, the chlorination of zircon in the metallurgical industry, uranium oxide fluorination in the nuclear power industry, as well as biomass gasification, fossil fuels conversion (chemical looping combustion of coal and gas), or crude oil processing in petroleum refineries by fluid catalytic cracking, amongst many others. The modelling of dense gas-particle reactive flows is a very challenging problem as many physical mechanisms need to be taken into account, in particular the numerous interactions between particles (collisions, agglomeration, attrition), between the particles and the fluid (with mass, momentum and energy transfer), and also between the particles and the walls (frictional bouncing, rough wall surface, deposition and resuspension), all of these being coupled with chemical reactions (gaseous and solid combustion, polymerisation…) This presentation will show how different numerical methods capable of describing the phenomena at the micro, meso and the macro scales, are coupled to provide relevant simulations of processes involving dense gas-particle reactive flows.
12:30 Lunch break
13:45 I C E B R E A K E R
17:30 APERITIF & POSTER SESSION
All participants are kindly asked to prepare a poster about their work that will be exposed over the whole school.
Please don't forget to bring your poster with you on Monday morning.
8:30 Coffee
9:00 Introduction
9:10 An introduction to non-Brownian suspension rheology: the role of interparticle contacts
Abstract coming soon
10:30 Coffee break
11:00 Particle-scale simulations and constitutive modelling
Abstract coming soon
11:45 What can 3D imaging bring to better understand the rheology of concentrated fibre suspensions?
Abstract coming soon
12:20 Lunch break
13:45 High-tech lab courses session I
Over the whole school, the participants will attend 3 out of the 12 proposed lab-courses (on Tuesday Wednesday and Thursday afternoon). Groups of 4-5 participants will be made and each group will be given its planning and location depending on the chosen topic. The lab-courses will be held in parallel sessions at different places on the campus.
A full description of the lab courses is available online to help you chose your topic
8:30 Coffee
09:00 Introduction
09:10 Experimental techniques for turbulent flow diagnostics
Abstract coming sool
8:30 Coffee break
11:00 Advanced experimental imaging techniques and quantitative image analysis
Abstract coming sool
11:45 Advanced experimental imaging for coupled processes in porous media
Abstract coming sool
12:30 Lunch break
13:30 High-tech lab courses session II
Over the whole school, the participants will attend 3 out of the 12 proposed lab-courses (on Tuesday Wednesday and Thursday afternoon). Groups of 4-5 participants will be made and each group will be given its planning and location depending on the chosen topic. The lab-courses will be held in parallel sessions at different places on the campus.
A full description of the lab courses is available online to help you chose your topic
THURSDAY 5: NUMERICAL METHODS AND ARTIFICIAL INTELLIGENCE
8:30 Coffee
9:00 Introduction
9:10 Numerical prediction of turbulent flows
This presentation introduces the physical and numerical foundations required to understand and predict turbulent flows. After recalling the key features of turbulence and the Navier–Stokes equations, it highlights the limitations of direct approach (DNS) due to its computational cost. Statistical methods such as RANS are then presented, along with their underlying assumptions and closure models. The course explores small-scale modeling through Large Eddy Simulation (LES), which resolves the main flow structures while modeling the smallest scales. Advantages, limitations, and mesh requirements of these approaches are discussed using practical examples. Then, an overview of hybrid strategies combining RANS and LES approaches are presented. In addition to these established approaches, recent advances leveraging machine learning are presented. These include data-driven subgrid-scale modeling and multi-fidelity simulations. Such developments illustrate how artificial intelligence is reshaping turbulence modeling by complementing physics-based approaches. Overall, this presentation aims to provide students with an integrated understanding of the physical, numerical, and practical aspects of turbulence modeling.
10:30 Coffee break
11:00 Molecular Dynamics and Upscaling approaches for sorption in nanoporous media
Water sorption in nanoporous materials is controlled by the interplay between pore structure, surface chemistry, and environmental conditions. Molecular simulations, including molecular dynamics (MD) and Grand Canonical Monte Carlo (GCMC), allow exploration of adsorption mechanisms at the nanoscale, capturing layering, capillary condensation, and cavitation phenomena. These methods provide access to isosteric heats of adsorption, molecular distributions, and how temperature modifies water organization in confined spaces. At the mesoscale, lattice gas density functional theory (DFT) can represent complex pore networks. Parameters such as fluid-fluid and solid-fluid interaction energies are informed by atomistic simulations, ensuring consistency across scales. The resulting adsorption and desorption curves exhibit hysteresis controlled by pore connectivity. Temperature influences the balance between adsorption and desorption, shifting cavitation pressures and modifying hysteresis loops. This talk will give insights into how combining MD simulations with mesoscale statistical approaches can provide a multiscale framework to predict water behavior in nanoporous media.
12:30 Lunch break
13:30 High-tech lab courses session III
Over the whole school, the participants will attend 3 out of the 12 proposed lab-courses (on Tuesday Wednesday and Thursday afternoon). Groups of 4-5 participants will be made and each group will be given its planning and location depending on the chosen topic. The lab-courses will be held in parallel sessions at different places on the campus.
A full description of the lab courses is available online to help you chose your topic
FRIDAY 6: MULTISCALE AND MULTIPHYSICAL APPROACHES IN BIOMECHANICS
8:30 Coffee
8:55 Biomechanics : from cell to tissues I
From stem cells to structured tissues and organs: how do organoids self-organise and take shape
Sham Tlili
CNRS, Université d'Aix-Marseille
Cell sensitivity to the stiffness of the extra-cellular matrix: from in vitro to in vivo and back
Alice Nicolas
CNRS, NTM - Université Grenoble Alpes
Mechanics-driven long range communication between cells
Angélique Stéphanou
CNRS, TIMC - Université Grenoble Alples
10:20 Coffee break
10:50 Biomechanics : from cell to tissues II
Modeling of soft vascularized tissues: a bi-compartment poromechanical approach
Giuseppe Sciume
I2M - Université de Bordeaux
Engineering and actuating 3D microtissues
Thomas Boudou
CNRS, LIPhy - Université Grenoble Alpes
The developing intestine as an electro-mechanical machine
Nicolas Chevalier
CNRS, MSC - Université Paris Cité
12:40 Lunch break
14:05 Biofluids interactions
Collective effects and rheology of bacteria suspensions
Carine Douarche
FAST - Université d'Orsay, Paris
A hydrodynamic toy model for fish locomotion
Bruno Ventéjou
LIPhy - Université Grenoble Alpes
Mechanical and stuctural characterization of pathological sputum
Antoine Raffournier
LRP - Université Grenoble Alpes