Cerfacs Entrez dans le monde de la haute performance...

Le Cerfacs en bref

Centre de recherche fondamentale et appliquée spécialisé dans la modélisation et la simulation numériques, également centre de formation avancée, le Cerfacs, par ses moyens et son savoir-faire en calcul haute performance, traite des grands problèmes scientifiques et techniques de recherche publique et industrielle sur les secteurs suivants: AERONAUTIQUE&AUTOMOBILEESPACEENERGIEENVIRONNEMENT&CLIMAT
Ses effectifs sont de l'ordre de 100-150 chercheurs, ingénieurs et administratifs.

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LES ACTUALITÉS

Contribution du CECI au « Petit Illustré » sur les Systèmes complexes (édition CNRS)

12 octobre 2017

Le CECI (Cerfacs, CNRS) et L'IMFT travaillent à la modélisation numérique des processus à l'origine des crues de rivières et de leurs incertitudes. Une contribution commune sur ce sujet, signée de Sophie Ricci et Hélène Roux, est publiée dans le numéro 34 de la collection "Petit...Lire la suite


Le Cerfacs était présent à la Nuit Européenne des Chercheur.e.s 2017 à Toulouse

1 octobre 2017

"Peut-on faire entrer un moteur, un avion ou la Terre entière dans un ordinateur ?". Tel était le titre accrocheur du stand du Cerfacs vendredi 29 septembre pour la Nuit Européennes des Chercheur.e.s dont le thème était "Impossible". Une centaine de personnes, au Quai des Savoirs à Toulouse,...Lire la suite

Toute l'actualité

NOS PUBLICATIONS

Monerie, P. A., Sanchez-Gomez, E., Pohl, B., Robson, J. and Dong, B. (2017) Impact of internal variability on projections of Sahel precipitation change, Environmental Research Letters, 12 (11), pp. 1-12, doi:0.1088/1748-9326/aa8cda

[pdf] [doi]

@ARTICLE{AR-CMGC-17-224, author = {Monerie, P.A. and Sanchez-Gomez, E. and Pohl, B. and Robson, J. and Dong, B. }, title = {Impact of internal variability on projections of Sahel precipitation change}, year = {2017}, number = {11}, volume = {12}, pages = {1-12}, doi = {0.1088/1748-9326/aa8cda}, journal = {Environmental Research Letters}, pdf = {http://cerfacs.fr/wp-content/uploads/2017/11/GLOBC-Article-Monerie_2017_Environ_Res_Lett.pdf}}

Bonnet, R., Boé, J., Dayon, G. and Martin, M. (2017) Twentieth-century hydrometeorological reconstructions to study the multidecadal variations of the water cycle over France, Water Resources Research, 53 (10), pp. 8366–8382, doi:10.1002/2017WR020596

[doi]

@ARTICLE{AR-CMGC-17-234, author = {Bonnet, R. and Boé, J. and Dayon, G. and Martin, M. }, title = {Twentieth-century hydrometeorological reconstructions to study the multidecadal variations of the water cycle over France}, year = {2017}, number = {10}, volume = {53}, pages = {8366–8382}, doi = {10.1002/2017WR020596}, journal = {Water Resources Research}}

Nidheesh, A. G., Lengaigne, M., Vialard, J., Izumo, T., Unnikrishnan, A. S. and Cassou, C. (2017) Influence of ENSO on the Pacific decadal oscillation in CMIP models, Climate Dynamics, 49 (9-10), pp. 3309–3326, doi:10.1007/s00382-016-3514-8

[pdf] [doi]

@ARTICLE{AR-CMGC-17-39, author = {Nidheesh, A.G. and Lengaigne, M. and Vialard, J. and Izumo, T. and Unnikrishnan, A.S. and Cassou, C. }, title = {Influence of ENSO on the Pacific decadal oscillation in CMIP models}, year = {2017}, number = {9-10}, volume = {49}, pages = {3309–3326}, doi = {10.1007/s00382-016-3514-8}, journal = {Climate Dynamics}, pdf = {http://cerfacs.fr/wp-content/uploads/2017/03/GlobC-Article-Cassou-influenceenso-féévrier2017.pdf}}

Volpiani, P., Schmitt, T., Vermorel, O., Quillatre, P. and Veynante, D. (2017) Large eddy simulation of explosion deflagrating flames using a dynamic wrinkling formulation, Combustion and Flame, 186 (december - Supplement C), pp. 17-31, doi:10.1016/j.combustflame.2017.07.022

[url] [doi]

@ARTICLE{AR-CFD-17-254, author = {Volpiani, PedroS. and Schmitt, T. and Vermorel, O. and Quillatre, P. and Veynante, D. }, title = {Large eddy simulation of explosion deflagrating flames using a dynamic wrinkling formulation}, year = {2017}, number = {december - Supplement C}, volume = {186}, pages = {17-31}, doi = {10.1016/j.combustflame.2017.07.022}, journal = {Combustion and Flame}, abstract = {Reliable predictions of flames propagating in a semi-confined environment are vital for safety reasons, once they are representative of accidental explosion configurations. Large eddy simulations of deflagrating flames are carried out using a dynamic flame wrinkling factor model. This model, validated from a posteriori analysis, is able to capture both laminar and turbulent flame regimes. At early stages of the flame development, a laminar flame propagates in a flow essentially at rest and the model parameter is close to zero, corresponding to a unity-wrinkling factor. Transition to turbulence occurs when the flame interacts with the flow motions generated by thermal expansion and obstacles. The model parameter and wrinkling factor take higher values at these stages. Three configurations investigated experimentally by Masri et al. 2012, corresponding to different scenarios of flame acceleration are simulated. The first case (OOBS) is characterized by a long laminar phase. In the second one (BBBS) the flame is the most turbulent and the highest overpressure is observed in the vessel. For the last case (BOOS), the flame front is relaminarized after crossing the first row of obstacles. In all configurations, large eddy simulations (LES) predict the flow dynamics and maximum overpressure with good accuracy.}, keywords = {Explosion ; Dynamic modeling ; Turbulent combustion ; Large eddy simulation ; Thickened flame model}, url = {http://www.sciencedirect.com/science/article/pii/S0010218017302675}}

Voldoire, A., Decharme, B., Pianezze, J., Lebeaupin Brossier, C., Sevault, F., Seyfried, L., Garnier, V., Bielli, S., Valcke, S., Alias, A., Accensi, M., Ardhuin, F., Bouin, M. N., Ducrocq, V., Faroux, S., Giordani, H., Léger, F., Marsaleix, P., Rainaud, R., Redelsperger, J. -L., Richard, E. and Riette, S. (2017) SURFEX v8.0 interface with OASIS3-MCT to couple atmosphere with hydrology, ocean, waves and sea-ice models, from coastal to global scales, Geoscientific Model Development, 10 (11), pp. 4207-4227, doi:10.5194/gmd-10-4207-2017

[pdf] [doi]

@ARTICLE{AR-CMGC-17-263, author = {Voldoire, A. and Decharme, B. and Pianezze, J. and Lebeaupin Brossier, C. and Sevault, F. and Seyfried, L. and Garnier, V. and Bielli, S. and Valcke, S. and Alias, A. and Accensi, M. and Ardhuin, F. and Bouin, M.N. and Ducrocq, V. and Faroux, S. and Giordani, H. and Léger, F. and Marsaleix, P. and Rainaud, R. and Redelsperger, J.-L. and Richard, E. and Riette, S. }, title = {SURFEX v8.0 interface with OASIS3-MCT to couple atmosphere with hydrology, ocean, waves and sea-ice models, from coastal to global scales}, year = {2017}, number = {11}, volume = {10}, pages = {4207-4227}, doi = {10.5194/gmd-10-4207-2017}, journal = {Geoscientific Model Development}, pdf = {http://cerfacs.fr/wp-content/uploads/2017/11/GLOBC-Article-SURFEX-Valcke-2017.pdf}}

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LE CERFACS RECRUTE

Exploitation de données d’images satellites grâce au Deep Learning

 

Contexte Le Centre National d'Etudes Spatiales (CNES) propose aux pouvoirs publics la politique spatiale de la France et la met en œuvre dans 5...Lire plus


Analyse et réduction de la cinétique chimique de la combustion

 ,

Contexte : la pénurie attendue de combustibles fossiles conduit l'industrie aéronautique à envisager l'ajout de combustibles de remplacement dans...Lire plus

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