Cerfacs Enter the world of high performance ...

Allons-Y A Vélo (Let’s cycle to work) : bronze medal for Cerfacs once

  10 October 2023

For the 3rd time in 3 years, Cerfacs is on the podium of the "Allons-Y À Vélo" enterprise challenge in its category (100-500 employees) with a bronze medal for its cycling regularity during the  AYAV period (May 29 - June 9 2023). During this period, 39% of Cerfacs employees came to work by bike during at least 5 consecutive days . Details about Allons-Y A Vélo can be found here. This nice success is in-line with Cerfacs participation to the Programme Employeur Pro-Vélo that provided fundings for new bike racks and bicycle repair workshops. In particular, Cerfacs employees benefit from the Forfait Mobilité Durable (FMD), i.e. up to 500 € for cycling to work! 


  10 October 2023

Congratulations to Walter AGOSTINELLI, winner of the Prix Léopold Escande 2022 On September 14, 2023, Walter AGOSTINELLI was awarded the "Prix de thèse Léopold Escande" by Toulouse INP's Research Committee, in recognition of the scientific quality of his thesis topic: "Assessment of Large Eddy Simulation in the Conjugate Heat Transfer context for engine operability: application to Hydrogen enrichment and Spinning Combustion Technology". This research work was carried out at Cerfacs under the supervision of Laurent Gicquel and Gabriel Staffelbach.

CERFACS is part of the FloodDAM-DT project

  28 September 2023

CERFACS is part of the FloodDAM-DT project funded by the Space Climate Observatory (SCO). FloodDAM-DT aims to provide an automated service to reliably detect, monitor, assess and predictfloods on a global scale within a Franco-American collaboration. This Digital Twin development is an international effort to devise an Earth System digital twin based on the water cycle and focused on floods. 

2 projects based on the AVBP code selected for the GENCI 2022 Activity Report

  13 July 2023

To illustrate the work carried out by the Fluid Mechanics committee on GENCI machines in 2022, 2 projects based on AVBP have been selected (): - Simulation of turbulent flows in dense gases at LMFA - Simulation of the impact of Alternative Fuels for Aviation (SAFs) in turbulent spray flames at CERFACS. Thanks to GENCI for access to the calculators beneficing to French research improvement

Two Cerfacs’ talks at Teratec Forum

  4 June 2023

CERFACS participated to the Teratec23 forum on High-Performance computing at the Parc Floral de Paris on May 31st-June 1st, 2023. This forum has welcomed international experts in Super Computing from all sectors of our society, such as Climate and Geosciences. As a leader in the landscape of Digital Simulation, CERFACS has taken part in two workshop sessions. Gabriel Staffelbach (HPC expert, CERFACS) was involved in "Quantum Computing: Future of HPC?" session. Sophie Ricci (Data assimilation expert, CERFACS/CNRS) and Thanh Huy Nguyen (Remote sensing expert, CERFACS/CNRS) were involved in the "HPC for the Earth Sciences, Climate and Environment" workshop. Gabriel Staffelbach delivered an insightful presentation on CERFACS' technology watch initiatives, with a specific focus on harnessing the potential of Quantum computer simulators and Quantum hardware for solving partial differential equations. The presentation highlighted the culmination of collaborative efforts spanning the past three years, involving key partnerships with Eviden (an Atos business) and IBM. In addition to this, CERFACS worked with the LIRMM laboratory to delve into the realm of quantum computing, leveraging their extensive experience in High-Performance Computing (HPC) as a solid foundation. This comprehensive exploration aims to unravel the advantages and drawbacks of quantum computing in the context of solving complex equations. S. Ricci and T. H. Nguyen gave a joint presentation with Raquel Rodriguez-Suquet (CNES, Lab'OT) on the FloodDAM-DT project. FloodDAM-DT (Flood Detection Alert and mapping - Digital Twin) is supported by the Space for Climate Observatory (SCO) program as a follow-up to its precursor FloodDAM within an international French-American cooperation. The international cooperation between CNES SCO FloodDAM-DT and NASA IDEAS project (AIST program) on water-cycle applications to devise an Earth System Digital Twin (ESDT) for alert and flood risk mapping systems at small and global scale to enable researchers and decision-makers to visualize, analyze, and evaluate different scenario outcomes for environmental matters where risk assessment is at stake. In this context, the targeted Digital twin architecture for Hydrology aims at dynamically connecting existing hydrologic/hydrodynamic models and continental water data (in-situ, airborne, remote-sensing (RS) data sources e.g. radar and optical) from both agencies (NASA & CNES) to produce large-scale flood predictions. This work entails a multi-agency effort to establish an extensible open-source platform focused on water resources and flood analysis where test case studies serve as demonstrators.  This 18-month project will result in a Proof-of-Concept showcase where the processing blocks are assembled for the Garonne catchment in France and the Ohio catchment in the US, thus providing access to in-situ and satellite/drone data, flood extent mapping issued from data processing, and data driven modeling as well as associated flood socio-economic risk map.

The Chinese edition of ‘Theoretical and Numerical Combustion' (TNC)  book available

  2 June 2023

The TNC book is a classical textbook for engineers and researchers performing simulations of turbulent reacting flows. Its english version has been available for a long time but now, a Chinese version is also available here :  TNC book is based on many results obtained first at CERFACS in the CFD team. Of course, finding typos is a little bit more difficult for most of us..

Organization of a validation workshop of CFD codes for hydrogen air flames

  5 May 2023

In the framework of CLEAN AVIATION (), a workshop of comparison of there-dimensional CFD codes able to compute hydrogen - air flamesis organized. This workshop will allow experimental data obtained by IMFT, TU Berlin and NTNU Trondheim to be distributed to all CFD groups interested in accessing high precision experimental data in order to test their software. Comparison conferences will take place, starting in november 2023. CAWH2-CLeanAviationWorskhopforH2Télécharger

IMFT and CERFACS  obtain a third ERC advanced grant on H2 combustion together: SELECT-H

  18 April 2023

Pr Thierry SCHULLER (Institut de Mécanique des Fluides de Toulouse, UPS) has obtained a new advanced grant from the European Research Council called SELECT-H. This grant will gather IMFT and CERFACS researchers to explore hydrogen combustion, starting in october 2023 for five years. The project committee will gather Pr T. Schuller (IMFT), Dr L. Gicquel (CERFACS) and Dr T. Poinsot (IMFT/CERFACS). This is the third joint ERC for IMFT and CERFACS, a unique accomplishment in this field.

Sparse Days Meeting 2023

  7 April 2023

Sparse Days Meeting 2023  🗓️ 19-20 June 2023  @ Cerfacs, France 🌐

CERFACS participation in the European Aviation Safey Agency (EASA) Conference

  5 April 2023

The European Aviation Safety Agency (EASA) organized a conference aimed at strengthening exchanges with academia on R&I topics that could, in the near future, change the world of aviation, contribute to the development of European industry, and address new regulatory challenges for aviation authorities. The conference was held in Cologne, Germany, on 23 and 24 March and brought together PhD students and other academic representatives with EASA experts and stakeholders, government and European research institutions.Three PhD students from the GLOBC team were invited to the conference to present their findings on the impact of climate change on aviation (ICCA), an active research topic at CERFACS and one of EASA's most important concerns. Victoria Gallardo (4th year) and Suzanne Salles (2nd year) study the impact of rising temperatures on aircraft take-off, whereas Mohamed Foudad (3rd year) focuses on the impact of global warming on clear-air turbulence. Suzanne Salles received the Young Doctoral Student Award for an invitation to visit EASA to work on her topic. More details in: 

Cerfacs’ envolved into TRACCS project

  4 April 2023

Several Cerfacs researchers and engineers are participating in the national research program TRACCS which was officially launched last Wednesday at the CNRS headquarters in Paris.The TRACCS program (Transforming Climate Modelling for Climate Services) is one of the winners of the second wave of the call for proposals for Priority Research Programs and Equipment (PEPR) aimed at consolidating key scientific fields for the technological, economic, social or environmental transformations underway. TRACCS joins the FairCarbon and OneWater programs, selected in 2021, and IRIMa, selected in the summer of 2022, which focus respectively on the carbon cycle, the water cycle and risks.TRACCS is jointly led by CNRS and Météo-France and will receive €51 million in funding over the period 2023-2030 as part of the France 2030 investment plan. It involves other French research players, including the French Atomic Energy Commission (CEA), the Institute of Research for Development (IRD), CERFACS, Grenoble Alpes University, Sorbonne University, Paris-Saclay University and the University of Versailles Saint-Quentin-en-Yvelines.

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.