ENSO complexity controlled by zonal shifts in the Walker circulation
4 April 2023
The El Niño Southern Oscillation is the dominant climate mode in the tropics but remains unpredictable due to strong variations in the heating zones of the tropical Pacific ocean among different El Niño events. Based on a theoretical approach, two researchers from CECI/CERFACS have shown that this diversity can be explained by the zonal (i.e. longitudinal) displacements of the background circulation of the Pacific or so-called Walker circulation. The work has been carried out within the framework of the ANR ARISE project and results have just been published in the journal Nature Geosciences ( also: results open new avenues to better understand the biases of current climate models as well as the evolution of the El Niño Southern Oscillation with climate change.
“Hydrogen week” at CERFACS and IMFT
29 March 2023
Week 13 was a strong hydrogen activity in Toulouse: - Pr Heinz Pitsch (RWTH Aachen) gave a talk on the fundamentals of hydrogen combustion on the 28th with more than 100 attendants - Dr Andrea Aniello presented his PhD on the 29th on: "Experimental and numerical assessment of H2 combustion potential: extreme events in laminar premixed burners and flame stability in non-premixed swirled injectors" IMFT and CERFACS continue to develop an intense joint work on hydrogen flames, initiated during the ERC advanced grant SCIROCCO (cerfacs.fr/scirocco) and continued through multiple collaborations with SAFRAN, AIRBUS and other companies.
Young PhD day (JDD2023@Cerfacs) – 23/05/2023
28 March 2023
Ph.D. Students' Day (JDD 2023) @ Tuesday 23 may 2023 Face to Face Event open to our partners and associates on registration
ISAF project : To accelerate the transition to SAFs, SAFRAN and CERFACS have together obtained an allocation of 44 million CPU hours on the LUMI-C super-computer as part of the EuroHPC Regular Access call in November 2022.
11 March 2023
The objective of the ISAF project is to study the impact of SAFs (Sustainable Aviation Fuels) on engine operation and pollutant emissions, using high-fidelity Large Eddy Simulations (LES). The methodology developed at CERFACS combines Analytically Reduced Chemistry (ARC) with a multi-component evaporation model to capture the effect of fuel. The target configurations range from academic burners (CRSB at CORIA, SSB at DLR Stuttgart), to isolated industrial injection systems (MICADO at ONERA, HERON at CORIA) and complete annular combustor configurations (BEARCAT at SAFRAN, NTNU test bench).
A CERFACS article distinguished in Scilight (https://doi.org/10.1063/10.0017474)
9 March 2023
The recently published paper in Physics of Plasma: "3D particle-in-cell study of the electron drift instability in a Hall Thruster using unstructured grids," by W. Villafana, B. Cuenot, and O. Vermorel ( attracted the attention of Scilight (), whose goal is to present the most interesting research in the physical sciences published in AIP journals."
Workshop INTEL ONEAPI
21 February 2023
Purpose of workshop Take advantage of architectures with new programming paradigms In recent years computation has been exposed to a widely growing heterogeneity of the types of used devices and their manufacturers. This trend is driven by the specialisation of devices to fit the needs of specific workloads, which in turn is the strategy to satisfy the ever-growing demand in compute power. Heterogeneity is present in both high-performance computing and consumer electronics. Today's systems use a multitude of co-processors and accelerators, such as GPUs, TPUs, and FPGAs, in addition to the traditional CPU. However, there isn't a simple, portable and efficient method to develop for these systems. Intel oneAPI (SYCL implementation) aims to fill this role. Getting the maximum achievable performance out of today’s hardware is a fine balance between optimal use of underlying hardware features and using code that is portable, easily maintainable, and power-efficient. These factors don't necessarily work in tandem. They require prioritizing based on user needs. It's non-trivial for users to maintain separate code bases for different architectures. A standard, simplified programming model that can run seamlessly on scalar, vector, matrix, and spatial architectures will give developers greater productivity through increased code reuse and reduced training investment. People Researchers and engineers with HPC knowledge Dates 28, 29, 30 March 2023 Duration 3 days with sessions training Program is available here Registration Free but Mandatory, please send an email to dast@cerfacs.fr The workshop takes place at CERFACS and course language is French and english.
CFD for combustion safety – conference at CERFACS, March 21st.
9 February 2023
The CFD for Combustion Safety meeting will take place at CERFACS. Registration is free here: The objective of the meeting is to gather experts in the field of simulations of safety scenarios associated to combustion (fires, explosions, flame-wall interactions, inhibition...), to exchange information and build collaborations on the fundamentals of combustion safety. The web site is :
Safran R&T prize
6 January 2023
Congratulations to Thibault Duranton for his award for the best presentation in 180s, in the Aerodynamics and Combustion category, at the Safran AE R&T Day on January 5, 2023, for his thesis entitled "Advanced modeling of multi-perforated plates for large-scale simulations of new-generation aircraft engines".
6th Workshop on Coupling Technologies for Earth System Models (CW2023)
21 December 2022
CERFACS and Argonne National Laboratory organise the "6th Workshop on Coupling Technologies for Earth System Models (CW2023)" on January 18-20, 2023 at the “Centre International de Conférences” on Météo-France campus in Toulouse, France. The workshop aims to bring together leading researchers and practitioners in the field of coupling infrastructure for Earth System Models. This workshop is the sixth in the series, started in 2010 in Toulouse and followed by Boulder USA (2013), Manchester UK (2015), Princeton USA (2017) and virtual (2020). Topics relevant to the workshop include, but are not limited to: Coupling technology latest developments Use of Coupling Technologies in ESMs or other climate and weather-related coupled systems: successes and failures, original or ground-breaking applications Computational performance of Couplers and Coupled Systems Coupling at exascale on heterogeneous systems. Science of Coupling and Coupling Strategies Integration of coupling technologies into workflows Interaction of data assimilation and coupling technologies Software development processes for complex coupled systems: Approaches for testing of complex coupled models, how code chages are made, build system, configuration system. All details can be found on the CW2023 web page.
Aeronautics & Space Awards: Carlos Pérez Arroyo, Jérôme Dombard and Gabriel Staffelbach are awarded the Vermeil medal
2 December 2022
Formal Session 2022 of the Air and Space Academy Friday, December 9, 2:00-6:00 pm 📌 in person at the Salle des Illustres - Mairie de Toulouse 💻 and in visio ✅ Mandatory registration (face-to-face or visio): During the formal public session of the Air and Space Academy 2022, which will take place on Friday, December 9, starting at 2:00 pm, Salle des Illustres, Hôtel de Ville de Toulouse, in face-to-face and remote sessions, the Vermeil Medal will be awarded (at 5:15 pm) to Carlos PÉREZ-ARROYO, Jérôme DOMBARD, and Gabriel STAFFELBACH to honor the excellence of their work in the realization of the FULLEST project, the first high-fidelity simulation of an aircraft engine.
CERFACS cited in l’Usine Nouvelle, Industrie et Technologies
25 November 2022
The work of CERFACS, in collaboration with SAFRAN, on the hybridization of physical simulation software with machine learning techniques, has been cited in the magazine l'Usine Nouvelle, and is included in a detailed write-up called "Simulation and machine learning combine their strengths" in the magazine Industries et Technologies this month. This work, supervised at CERFACS by Corentin Lapeyre, and at SAFRAN by Stéphane Richard, is at the forefront of developments in terms of exploiting artificial intelligence tools for the simulation and design of physical systems.
