ERCOFTAC Best Practice Guidelines Course
CFD for Dispersed Multi-Phase Flows 2022 with Problem Shooting Session
12th - 14th October 2026
hosted by ERCOFTAC Pilot Centre Greece
National Technical University of Athens (NTUA)
(just before to the ERCOFTAC Autumn Festival 2026)
Main lecturers:
- Prof. Dr.-Ing. Martin Sommerfeld,
Multiphase Flow Systems, Otto-von-Guericke University Magdeburg, Germany - Prof. Dr. Olivier Simonin,
Institut de Mécanique des Fluides de Toulouse(IMFT), France - Dr.-Ing. Martin Wörner,
Karlsruhe Institute of Technology (KIT), Germany
Local lecturers:
- Prof. Foivos Koukouvinis,
National Technical University of Athens (NTUA), Greece - TBC
Local Organiser:
- Prof. Demetri Bouris, National Technical University of Athens, Mechanical Engineering, Fluids Section, Greece
Further Information: admin@cado-ercoftac.org and martin.Sommerfeld@ovgu.de
Deadline for registration: 15th August 2026
Registration Fees (a reduction of 50€ applies to ERCOFTAC members):
- Industry: 800€
- Academia: 550€
- PhD Students: 400€
Each delegate will receive a free copy of the book BPG CFD for Dispersed Multiphase Flows, lunches and coffee breaks are included. Please note, course fees do NOT include accommodation.
Please contact Magdalena Yates, ERCOFTAC CADO: admin@cado-ercoftac.orgregarding any issues with registration process
Monday, 12 October 2026
| 8:30 | Registration and Coffee | |
| 8:45 | Introduction to the course; Characterisation of multiphase flows (45 min) - Martin Sommerfeld (OvGU) | |
| 9:30 | Numerical methods for multi-phase flow (60 min) - Martin Wörner (KIT) | |
| 10:30 | Refreshments (30 min) | |
| 11:00 | Industrial challenges and needs for the application of CFD to industrial dispersed multiphase flows (60 min) - Olivier Simonin (IMFT) | |
| 12:00 | Lunch (60 min) | |
| 13:00 | Forces on spherical and non-spherical particles (60 min) - Martin Sommerfeld (OvGU) |
|
| 14:00 | Point-particle Euler/Lagrange method, fundamentals, implementation and coupling, turbulent dispersion (60 min) - Martin Sommerfeld (OvGU) | |
| 15:00 | Refreshments (30 min) | |
| 15:30 | LES subgrid modelling in particle laden flows with Euler-Lagrange and Euler-Euler approaches (60 min) - Olivier Simonin (IMFT) |
| 16:30 | Bubble modelling in the point-particle Lagrangian approach (30 min) - Martin Sommerfeld (OvGU) |
| 17:00 | Q & A (30 min) |
| 20:00 | Joint dinner at a restaurant: "Le Bouchon des Filles" at 20, rue Sergent-Blandan, près de la place Sathonay, 69001 Lyon: https://lebouchondesfilles.fr/#trouver |
Tuesday, 11 October 2022
| 8:30 | Continuum Multi-Fluid approach, different modelling levels, particle-laden flows (60 min) - Olivier Simonin (IMFT) |
9:30 | Multi-Fluid (Euler/Euler) approach, liquid-gas, bubbly flows (60 min) - Martin Wörner (KIT) |
| 10:30 | Refreshments (30 min) |
| 11:00 | Turbulent transport of particles in atmospheric flows (45 min) - Lionel Soulhac (LMFA) |
| 11:45 | Resolved numerical simulations for small-scale processes and model development (45 min) - Martin Wörner (KIT) |
| 12:30 | Lunch (60 min) |
| 13:30 | Modelling elementary processes in dispersed multi-phase flows (solid particles, spray droplets and bubbles) (60 min) - Martin Sommerfeld (OvGU) |
| 14:30 | Coupling of flow and discrete particle method; CFD/DEM Simulations (60 min) - Olivier Simonin (IMFT) |
| 14:30 | Test case calculations and examples of application (30 min) |
| 15:30 | Refreshments (30 min) |
| 16:00 | Test case calculations and examples of application (30 min); Summary of available test cases, channels, jets, sprays, fluidised beds - Martin Sommerfeld (OvGU) |
| 16:30 | Problem shooting session, presentations from participants (90 min); (Registration required, please submit your proposal, we will try our best to help solving your problem) - ALL |
Multiphase Flows Rationale:
The simultaneous presence of several different phases in external or internal flows such as gas, liquid and solid is found in daily life, environment and numerous industrial processes. These types of flows are termed multiphase flows, which may exist in different forms depending on the phase distribution, such as separated and dispersed systems. Examples are gas-liquid transportation, crude oil recovery, circulating fluidized beds, sediment transport in rivers, pollutant transport in the environment and atmosphere, fine particle separation, cloud formation, fuel injection in engines, bubble column reactors and sprays for food processing, to name only a few. As a result of the interaction between the different phases such flows are rather complicated and very difficult to describe theoretically.
Consequently, the numerical calculation of multiphase flow systems based on CFD methods also comprises a multitude of different numerical methods each applicable to certain types of multiphase flows and resolving different length and time scales of the problem. The present course focusses on numerical simulations of dispersed multiphase flows and the required modelling of particle-scale phenomena. The hierarchy of available numerical techniques for the different scales in multiphase flows (i.e. particle-scale and industrial-scale simulations) is presented. Both the well-known Euler/Euler and Euler/Lagrange approach, suitable for large-scale simulations of industrial processes, are introduced in detail. Required modelling for particle-scale transport phenomena is presented and the use of particle-resolved direct numerical simulations for their development is emphasised. Examples of a number of advanced models are presented and their effects on large-scale processes are highlighted.
This course is rather unique as it is one of few in the community that is specifically designed to deliver:
a) best practice guidance and
b) the latest trends in CFD for dispersed multi-phase flows and
c) many application examples.
The course appeals to researchers and engineers involved in projects requiring CFD for turbulent dispersed multi-phase flows with bubbles, drops or particles.
Moreover, participants are offered the opportunity to present their work via 10 minute presentations
(problem-shooting session), thereafter, the lecturers can offer prospective solution.
Registration is required: martin.sommerfeld@ovgu.de
Instantaneous wall solids concentration from a 3D Euler-Euler unsteady simulation of a chemical looping combustion pilot built at SINTEF Energy Research and consisting of two fluidized beds interconnected with a lifter (IMFT, Toulouse, 2020).
Euler/Lagrange results for particle deposition in
a lung model (dark particles: deposited;
grey particles: still active particles, MPS-OvGU 2020)
Interface-resolving simulation of the impact/rebound of a drop on/from a surface with micro-grooves (KIT, Karlsruhe, 2018).
Course leaflet is available below:
bpg-dmpf-seminar-lyon_october_2022.pdf
ACCOMMODATION:
The hotel very closely to the campus (five minutes on foot) is: Hôtel Restaurant Campanile 42 Av. Guy de Collongue, 69130 Écully; tel: +33 (0)4 78 33 16 93
TRANSPORT:
- for those who booked their hotel in Lyon: they can arrive in the Ecole Centrale by busses: 55, C6, C6E, 3
- the arrival bus stop is Campus Lyon Ouest
- the most rapid way (about 15 min) is to take the bus C6E at the Gare De Vaise (which is attainable by subway and bus) for the attention: this bus is scheduled only in the morning, from 7:30 to 9:00 and in the after-noon from 16:00 to 18:30)
- another way is to take the bus number 3 at the Gorge De Loup station (also attainable by subway and bus)
- it is also to know that the way by busses 55 (starting from the railway station Perrache) and C6 (starting from the railway station Gare Part-Dieu Vivier Merle) are relatively long (about one hour)
- You can find all necessary information on public transportations on the website: https://www.tcl.fr/
DINNERS:
There are many nice restaurants in Lyon such as:
- Café des Fédérations (8-9-10 rue Major Martin 69001 Lyon
- Brasserie Georges–1836, Lyon (30 cours de Verdun, 69002, Lyon)
- Léon de Lyon (1 Rue Pleney, 69001 Lyon) and many others
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