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Couplers developed at CERFACS


Coupling numerical models is a central issue in many research fields such as climate modelling, computational fluid dynamics, atmospheric chemistry, etc.

Ideally, a coupler, i.e., the software interface between the different models, should allow the realization of coupled simulations on different types of platforms at a minimal cost, the  testing of different coupling algorithms (e.g. time strategy or interpolation methods), or to change the numerical modeling components that participate in the coupled simulation in order to realize coupled model intercomparisons. Two couplers are developed at CERFACS: OASIS and OpenPalm.


OASIS3-MCT coupling

OASIS3-MCT coupling

The OASIS coupler « Ocean Atmosphere Sea Ice Soil » is a software allowing synchronized exchanges of coupling information between numerical codes representing different components of the climate system.

For further information :  site Web OASIS

Contact at CERFACS : Sophie Valcke



OpenPALM coupling

OpenPALM coupling


OpenPalm is a software allowing the concurrent execution and the intercommunication of programs based on in-house as well as commercial codes. For climate modelling an ocean model could be coupled with and atmospheric model through OpenPalm, for a combustion chamber temperature simulation a combustion model could be coupled with a radiation model…

For further information : site Web OpenPalm

Contact at CERFACS : Florent Duchaine



A bronze medal to Cerfacs for “Allons-Y À Vélo” !

CERFACS |  26 July 2021

A bronze medal to Cerfacs for "Allons-Y À Vélo" ! Cerfacs is on the podium for its cycling regularity during the "Allons-Y À Vélo" period (May 25 - June 25) in its category (100-500 employees).During this period, 37% of Cerfacs employees came to work by bike during at least 4 consecutive days. "Allons-Y À Vélo" is a campaign organised by the association "2 Pieds 2 Roues" and "La Maison du Vélo de Toulouse" to promote the use of the bicycle for every day travels; all details can be found on allonsyavelo.le-pic.org . Cerfacs encourages its employees to use their bicycle to come to work as they benefit from the bicycle mileage allowance (FMD for Forfait Mobilité Durable) of up to 500 Euros per year.Read more

The H2OPE project wins the prize Joseph Fourier 2021

CERFACS |  26 July 2021

The H2OPE project wins the prize Joseph Fourier 2021 The prize, launched by Atos and GENCI, aims to reward the work of researchers, academics and industry in two strategic areas: Advanced Computing (HPC, Quantum, Edge) and Artificial Intelligence, and, in the 2021 edition , gives particular importance to Decarbonation. The 1st Prize was awarded to the H2OPE or “H2OPErability for safe and clean gas turbine engines” project from CERFACS in Toulouse. This project aims, via the LES AVBP code, to model at high resolution a mixed combustion process associating conventional fuels with hydrogen (bi-fuels) as one of the most promising technical solutions to achieve "net zero emissions" of CO2 in the industrial sector. It was presented by Walter Agostinelli, Davide Laera, Laurent Gicquel, and Thierry Poinsot. Press release :Read more