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

Colloque Sparse Days 2018 au Cerfacs, Toulouse

12 juin 2018

La réunion annuelle des Sparse Days se tiendra au CERFACS à Toulouse les  27 au 28 Septembre 2018 au Cerfacs, Toulouse, France. L’inscription aux Sparse Days est gratuite, mais nous demandons aux personnes intéressées de s’inscrire le plus tôt possible, bien que la date limite...Lire la suite


Un nouveau calculateur mis en production au Cerfacs

16 mai 2018

Début mai 2018 le Cerfacs a ouvert en production son nouveau calculateur Kraken. Fourni par la société Lenovo celui-ci développe une performance crête de 315 Tflop/s. Ce nouveau calculateur comprend 4 284 coeurs répartis dans 119 noeuds de calcul disposant chacun de 2 processeurs...Lire la suite

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NOS PUBLICATIONS

Flaounas, E., Kelemen, F. D., Wernli, H., Gaertner, M. A., Reale, M., Sanchez-Gomez, E., Lionello, P., Calmanti, S., Podrascanin, Z., Somot, S., Akhtar, N., Romera, R. and Conte, D. (2018) Assessment of an ensemble of ocean–atmosphere coupled and uncoupled regional climate models to reproduce the climatology of Mediterranean cyclones, Climate Dynamics, 51 (3), pp. 1023–1040, doi:10.1007/s00382-016-3398-7

[pdf] [doi]

@ARTICLE{AR-CMGC-18-8, author = {Flaounas, E. and Kelemen, F.D. and Wernli , H. and Gaertner, M.A. and Reale, M. and Sanchez-Gomez, E. and Lionello, P. and Calmanti, S. and Podrascanin, Z. and Somot, S. and Akhtar, N. and Romera, R. and Conte, D. }, title = {Assessment of an ensemble of ocean–atmosphere coupled and uncoupled regional climate models to reproduce the climatology of Mediterranean cyclones}, year = {2018}, number = {3}, volume = {51}, pages = {1023–1040}, doi = {10.1007/s00382-016-3398-7}, journal = {Climate Dynamics}, pdf = {https://cerfacs.fr/wp-content/uploads/2018/08/GLOBC_Sanchez_etal_ClimDyn_082018.pdf}}

Sanchez-Gomez, E. and Somot, S. (2018) Impact of the internal variability on the cyclone tracks simulated by a regional climate model over the Med-CORDEX domain, Climate Dynamics, 51 (3), pp. 1005–1021, doi:10.1007/s00382-016-3394-y

[pdf] [doi]

@ARTICLE{AR-CMGC-18-1, author = {Sanchez-Gomez, E. and Somot, S. }, title = {Impact of the internal variability on the cyclone tracks simulated by a regional climate model over the Med-CORDEX domain}, year = {2018}, number = {3}, volume = {51}, pages = {1005–1021}, doi = {10.1007/s00382-016-3394-y}, journal = {Climate Dynamics}, pdf = {https://cerfacs.fr/wp-content/uploads/2018/08/GLOBC_Sanchez_etal_ClimDyn2_082018.pdf}}

Samuel, S., Houpert, Sevault, F., Testor, P., Bosse, A., Taupier-Letage, I., Bouin, M. N., Waldman, R., Cassou, C., Sanchez-Gomez, E., Durrieu de Madro, X., Adloff, F., Nabat, P. and Herrmann, M. (2018) Characterizing, modelling and understanding the climate variability of the deep water formation in the North-Western Mediterranean Sea, Climate Dynamics, 51 (3), pp. 1179–1210, doi:10.1007/s00382-016-3295-0

[pdf] [doi]

@ARTICLE{AR-CMGC-18-2, author = {Samuel, S. and Houpert and Sevault, F. and Testor, P. and Bosse, A. and Taupier-Letage, I. and Bouin, M.N. and Waldman, R. and Cassou, C. and Sanchez-Gomez, E. and Durrieu de Madro, X. and Adloff , F. and Nabat, P. and Herrmann, M. }, title = {Characterizing, modelling and understanding the climate variability of the deep water formation in the North-Western Mediterranean Sea}, year = {2018}, number = {3}, volume = {51}, pages = {1179–1210}, doi = {10.1007/s00382-016-3295-0}, journal = {Climate Dynamics}, pdf = {https://cerfacs.fr/wp-content/uploads/2018/08/GLOBC_Cassou_etal_ClimDyn_082018.pdf}}

Dounia, O., Vermorel, O. and Poinsot, T. (2018) Theoretical analysis and simulation of methane/air flame inhibition by sodium bicarbonate particles, Combustion and Flame, 193, pp. 313-326, doi:10.1016/j.combustflame.2018.03.033

[pdf] [doi]

@ARTICLE{AR-CFD-18-75, author = {Dounia, O. and Vermorel, O. and Poinsot, T. }, title = {Theoretical analysis and simulation of methane/air flame inhibition by sodium bicarbonate particles}, year = {2018}, volume = {193}, pages = {313-326}, doi = {10.1016/j.combustflame.2018.03.033}, journal = {Combustion and Flame}, abstract = {The capacity of sodium bicarbonate (NaHCO3)s powder to chemically reduce flame speeds and mitigate the effects of accidental explosions is well established. The inhibition of premixed hydrocarbon/air flames by monodispersed (NaHCO3)s solid particles is investigated, here, using theory and numerical simulations. First, an analytical solution for the temperature history of a solid (NaHCO3)s particle crossing a flame shows that the size of the largest (NaHCO3)s particle which can decompose inside the flame front, and act on chemical reactions efficiently, strongly depends on the flame speed. For various fuels and a wide range of equivalence ratios, particles with a strong potential for flame inhibition are identified: hence a criterion, on the maximum particle size, for efficient inhibition is proposed. Thereafter, a one-dimensional methane/air flame traveling in a premixed gas loaded with sodium bicarbonate is simulated using a chemical mechanism based on GRI-Mech, extended to include inhibition chemistry and reduced to 20 species with a DRGEP method. Inhibitor particle size and mass loading are varied to study the flame response to inhibition by (NaHCO3)s powders. Finally, two-dimensional simulations of a planar flame traveling in a flow with a non-uniform inhibitor mass loading distribution are analyzed. In the case of strong particle stratication, an acceleration of the flame is observed, instead of a mitigation. This fundamental mechanism may limit the actual potential of inhibition powders in real configurations.}, keywords = {DT, detonation, flame acceleration}, pdf = {https://cerfacs.fr/wp-content/uploads/2018/06/CFD_DOUNIA_COMBandFJUIN2018.pdf}}

Lehner, F., Deser, C., Simpson, I. R. and Terray, L. (2018) Attributing the U.S. Southwest's Recent Shift Into Drier Conditions, Geophysical Research Letters, 45 (12), pp. 6251-6261, doi:10.1029/2018GL078312

[pdf] [Supplementary Material] [doi]

@ARTICLE{AR-CMGC-18-88, author = {Lehner, F. and Deser, C. and Simpson, I.R. and Terray, L. }, title = {Attributing the U.S. Southwest's Recent Shift Into Drier Conditions}, year = {2018}, number = {12}, volume = {45}, pages = {6251-6261}, doi = {10.1029/2018GL078312}, journal = {Geophysical Research Letters}, pdf = {https://cerfacs.fr/wp-content/uploads/2018/07/GLOBC-Article-terray-Attributing-the-U.S.-Southwests-Recent-Shift-Into-Drier-Conditions-2018.pdf}, supplementaryMaterial = {https://cerfacs.fr/wp-content/uploads/2018/07/ARTICLE-GLOBC-TERRAY-JUILLET-SI.pdf}}

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LE CERFACS RECRUTE

Développement de méthodes pour la quantification des incertitudes au sein du coupleur de codes OpenPalm

 

Required Education / Niveau requis Master 2 From / Date de début Février Approx Duration / Durée 6 mois Context / Contexte Mots-clé : math...Lire plus


Post-doctoral position in computational mechanics

 

  Contexte / Context

Domain decomposition methods are well established approaches for solving large scale...

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