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.

En savoir plus

LES ACTUALITÉS

Séminaire du professeur Andrea Saltelli au CERFACS, le 03 Décembre 2018 Résumé

4 décembre 2018

Le CERFACS a eu le plaisir d'accueillir le Professeur Andrea Saltelli pour un séminaire d'intérêt général sur la quantification de l'incertitude. Les travaux de recherche au Pr. Andrea Saltelli se concentrent sur l'analyse de sensibilité. L'analyse de sensibilité consiste à déterminer...Lire la suite


Le Cerfacs est financé dans le cadre de deux projets pour explorer et diffuser les nouvelles technologies de programmation adaptées à l'exascale.

3 décembre 2018

Le Cerfacs est impliqué dans le Centre d’Excellence Excellerat () et dans le projet EPEEC (). Excellerat est un centre d’excellence européen pour le support des applications d’ingénierie vers l'exascale. Ce centre a été créé à l’initiative de plusieurs centres de calcul haute...Lire la suite

Toute l'actualité

NOS PUBLICATIONS

Bizzari, R., Lahbib, D., Dauptain, A., Duchaine, F., Richard, S. and Nicoud, F. (2018) Low order modeling method for assessing the temperature of multi-perforated plates, International Journal of Heat and Mass Transfer, 127 (Part B), pp. 727–742, doi:10.1016/j.ijheatmasstransfer.2018.07.059

[url] [doi]

@ARTICLE{AR-CFD-18-116, author = {Bizzari, R. and Lahbib, D. and Dauptain, A. and Duchaine, F. and Richard, S. and Nicoud, F. }, title = {Low order modeling method for assessing the temperature of multi-perforated plates}, year = {2018}, number = {Part B}, volume = {127}, pages = {727–742}, doi = {10.1016/j.ijheatmasstransfer.2018.07.059}, journal = {International Journal of Heat and Mass Transfer}, abstract = {A low-order model is proposed to predict the temperature of a multi-perforated plate from an unresolved adiabatic computation. Its development relies on the analysis of both an adiabatic and a conjugate heat transfer wall resolved large eddy simulation of an academic multi-perforated liner representative of the cooling systems used in combustion chambers of actual aero-engines. These two simulations show that the time averaged velocity field is marginally modified by the coupling with the heat diffusion in the perforated plate when compared to the adiabatic case. This gives rise to a methodology to assess the wall temperature from an unresolved adiabatic computation. It relies on heat transfer coefficients from referenced correlations as well as a mixing temperature relevant to the flow in the injection region where the cold micro-jets mix with the hot outer flow. In this approach, a coarse mesh simulation using an homogeneous adiabatic model for the aerodynamics of the flow with effusion is post-processed to provide a low cost alternative to conjugate heat transfer computations based on hole resolved meshes. The model is validated on an academic test case and successfully applied to a real industrial combustion chamber.}, keywords = {Effusion cooling, Conjugate heat transfer, Large-Eddy simulations, Adiabatic computations, Coupled computation, Modeling}, url = {https://doi.org/10.1016/j.ijheatmasstransfer.2018.07.059}}

Thomas, Y., Cassou, C., Gernez, P. and Pouvreau, S. (2018) Oysters as sentinels of climate variability and climate change in coastal ecosystems, Environmental Research Letters, 13, pp. 104009, doi:10.1088/1748-9326/aae254

[pdf] [Supplementary Material] [doi]

@ARTICLE{AR-CMGC-18-179, author = {Thomas, Y. and Cassou, C. and Gernez, P. and Pouvreau, S. }, title = {Oysters as sentinels of climate variability and climate change in coastal ecosystems}, year = {2018}, volume = {13}, pages = {104009}, doi = {10.1088/1748-9326/aae254}, journal = {Environmental Research Letters}, pdf = {https://cerfacs.fr/wp-content/uploads/2018/11/Thomas_2018_Environ._Res._Lett._13_104009.pdf}, supplementaryMaterial = {https://www.liberation.fr/france/2018/10/15/l-huitre-victime-symbolique-du-climat_1685029}}

Vial, J., Cassou, C., Codron, F., Bony, S. and Ruprich-Robert, Y. (2018) Influence of the Atlantic Meridional Overturning Circulation on the Tropical Climate Response to CO2 Forcing, Geophysical Research Letters, 45 (16), pp. 8519-8528, doi:10.1029/2018GL078558

[pdf] [doi]

@ARTICLE{AR-CMGC-18-124, author = {Vial, J. and Cassou, C. and Codron, F. and Bony, S. and Ruprich-Robert, Y. }, title = {Influence of the Atlantic Meridional Overturning Circulation on the Tropical Climate Response to CO2 Forcing}, year = {2018}, number = {16}, volume = {45}, pages = {8519-8528}, doi = {10.1029/2018GL078558}, journal = {Geophysical Research Letters}, pdf = {https://doi.org/10.1029/2018GL078558}}

Bizzari, R., Lahbib, D., Dauptain, A., Duchaine, F., Gicquel, L. Y. M. and Nicoud, F. (2018) A Thickened-Hole Model for Large Eddy Simulations over Multiperforated Liners, Flow Turbulence and Combustion, 101 (3), pp. 705-717, ISSN 1573-1987 (Online), doi:10.1007/s10494-018-9909-3

[url] [doi]

@ARTICLE{AR-CFD-18-50, author = {Bizzari, R. and Lahbib, D. and Dauptain, A. and Duchaine, F. and Gicquel, L.Y.M. and Nicoud, F. }, title = {A Thickened-Hole Model for Large Eddy Simulations over Multiperforated Liners}, year = {2018}, number = {3}, volume = {101}, pages = {705-717}, issn = {1573-1987 (Online)}, doi = {10.1007/s10494-018-9909-3}, journal = {Flow Turbulence and Combustion}, abstract = {In aero-engines, mutiperforation cooling systems are often used to shield the combustor wall and ensure durability of the engine. Fresh air coming from the casing goes through thousands of angled perforations and forms a film which protects the liner. When performing Large Eddy Simulations (LES) of a real engine, the number of sub-millimetric holes is far too large to allow a complete and accurate description of each aperture. Homogeneous models allow to simulate multiperforated plates with a mesh size bigger than the hole but fail in representing the jet penetration and mixing. A heterogeneous approach is proposed in this study, where the apertures are thickened if necessary so that the jet-crossflow interaction is properly represented. Simulations using homogeneous and thickened-hole models are compared to a fully resolved computation for various grid resolutions in order to illustrate the potential of the method.}, keywords = {COMB, Aerodynamics, LES, Multiperforated plate, Modelling}, url = {https://doi.org/10.1007/s10494-018-9909-3}}

Mavilia, I., Bellucci, A., Athanasiadis, P. J., Gualdi, S., Msadek, R. and Ruprich-Robert, Y. (2018) On the spectral characteristics of the Atlantic multidecadal variability in an ensemble of multi-century simulations, Climate Dynamics, 51 (9-10), pp. 3507–3520, doi:10.1007/s00382-018-4093-7

[pdf] [doi]

@ARTICLE{AR-CMGC-18-24, author = {Mavilia, I. and Bellucci, A. and Athanasiadis, P.J. and Gualdi, S. and Msadek, R. and Ruprich-Robert, Y. }, title = {On the spectral characteristics of the Atlantic multidecadal variability in an ensemble of multi-century simulations}, year = {2018}, number = {9-10}, volume = {51}, pages = {3507–3520}, doi = {10.1007/s00382-018-4093-7}, journal = {Climate Dynamics}, pdf = {https://cerfacs.fr/wp-content/uploads/2018/01/GLOBC-Article-Mavilia-Msadek-janvier2018.pdf}}

Toutes les publications

LE CERFACS RECRUTE

Machine Learning & Météorologie : Hybridation des modèles physiques et des techniques d'apprentissage – Application à la prévision immédiate du temps

 

Contexte Le Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS) travaille à la résolution, par la...Lire plus


Simulation numérique directe de la combustion turbulente

 

Contexte Le CERFACS développe des outils numériques pour l'étude et la prédiction des écoulements réactifs turbulents, pour divers types...Lire plus

Toutes les offres