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

Deux projets Marie Curie acceptés sur la combustion en 2017 au CERFACS

18 mai 2017

Le CERFACS a obtenu des bourses de thèses dans le domaine des instabilités de combustion dans deux projets Marie Curie (ec.europa.eu/research/mariecurieactions) appelés MAGISTER et ANNULIGHT. Ces deux projets vont permettre l’embauche de trois doctorants qui travailleront en liaison directe...Lire la suite


Finale régionale du concours « Ma thèse en 180 secondes »

16 mai 2017

  Antoine Colmet-Daage, actuellement en thèse dans l'équipe "Modélisation du climat et de son changement global", a participé à la finale régionale du concours "Ma thèse en 180 secondes" qui se déroulait au jardin Botanique de Montpellier le jeudi 20 avril 2017. Vous pouvez...Lire la suite

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NOS PUBLICATIONS

Bessières, L., Leroux, S., Brankart, J. -M., Molines, J. M., Moine, M. -P., Bouttier, P. -A., Penduff, T., Terray, L., Barnier, B. and Serazin, G. (2017) Development of a probabilistic ocean modelling system based on NEMO 3.5: application at eddying resolution, Geoscientific Model Development, pp. 1091-1106, doi:10.5194/gmd-10-1091-2017

[pdf] [doi]

@ARTICLE{AR-CMGC-17-76, author = {Bessières, L. and Leroux, S. and Brankart, J.-M. and Molines, J.M. and Moine, M.-P. and Bouttier, P.-A. and Penduff, T. and Terray, L. and Barnier, B. and Serazin, G. }, title = {Development of a probabilistic ocean modelling system based on NEMO 3.5: application at eddying resolution}, year = {2017}, pages = {1091-1106}, doi = {10.5194/gmd-10-1091-2017}, journal = {Geoscientific Model Development}, pdf = {http://cerfacs.fr/wp-content/uploads/2017/05/GLOBC-Article-Mai-Bessieres_et_al_GMD_2017.pdf}}

Monerie, P. A., Sanchez-Gomez, E. and Boé, J. (2017) On the range of future Sahel precipitation projections and the selection of a sub-sample of CMIP5 models for impact studies, Climate Dynamics, 48 (7), pp. 2751–2770, doi:10.1007/s00382-016-3236-y

[url] [doi]

@ARTICLE{AR-CMGC-17-28, author = {Monerie, P.A. and Sanchez-Gomez, E. and Boé, J. }, title = {On the range of future Sahel precipitation projections and the selection of a sub-sample of CMIP5 models for impact studies}, year = {2017}, number = {7}, volume = {48}, pages = {2751–2770}, doi = {10.1007/s00382-016-3236-y}, journal = {Climate Dynamics}, url = {https://link.springer.com/article/10.1007/s00382-016-3236-y}}

Daviller, G., Brebion, M., Xavier, P., Staffelbach, G., Mueller, J. -D. and Poinsot, T. (2017) A mesh adaptation strategy to predict pressure losses in LES of swirled flows, Flow Turbulence and Combustion, doi:10.1007/s10494-017-9808-z

[pdf] [url] [doi]

@ARTICLE{AR-CFD-17-66, author = {Daviller, G. and Brebion, M. and Xavier, P. and Staffelbach, G. and Mueller, J.-D. and Poinsot, T. }, title = {A mesh adaptation strategy to predict pressure losses in LES of swirled flows}, year = {2017}, doi = {10.1007/s10494-017-9808-z}, journal = {Flow Turbulence and Combustion}, abstract = {Large-Eddy Simulation (LES) has become a potent tool to investigate instabilities in swirl flows even for complex, industrial geometries. However, the accurate prediction of pressure losses on these complex flows remains difficult. The paper identifies localised near-wall resolution issues as an important factor to improve accuracy and proposes a solution with an adaptive mesh h-refinement strategy relying on the tetrahedral fully automatic MMG3D library of Dapogny et al. (J. Comput. Phys. 262, 358-378, 2014) using a novel sensor based on the dissipation of kinetic energy. Using a joint experimental and numerical LES study, the methodology is first validated on a simple diaphragm flow before to be applied on a swirler with two counter-rotating passages. The results demonstrate that the new sensor and adaptation approach can effectively produce the desired local mesh refinement to match the target losses, measured experimentally. Results shows that the accuracy of pressure losses prediction is mainly controlled by the mesh quality and density in the swirler passages. The refinement also improves the computed velocity and turbulence profiles at the swirler outlet, compared to PIV results. The significant improvement of results confirms that the sensor is able to identify the relevant physics of turbulent flows that is essential for the overall accuracy of LES. Finally, in the appendix, an additional comparison of the sensor fields on tetrahedral and hexahedral meshes demonstrates that the methodology is broadly applicable to all mesh types.}, keywords = {LES, swirl injector, pressure losses, adaptive mesh refinement}, pdf = {http://cerfacs.fr/wp-content/uploads/2017/04/davilleretal_FTaC_2017.pdf}, url = {http://link.springer.com/article/10.1007%2Fs10494-017-9808-z}}

Costantino, L., Cuesta, J., Emili, E. and et al. (2017) Potential of multispectral synergism for observing ozone pollution by combining IASI-NG and UVNS measurements from the EPS-SG satellite, Atmospheric Measurement Techniques, 10 (4), pp. 1281-1298, ISSN 1867-8548, doi:10.5194/amt-10-1281-2017

[url] [doi]

@ARTICLE{AR-AE-17-56, author = {Costantino, L. and Cuesta, J. and Emili, E. and et al.}, title = {Potential of multispectral synergism for observing ozone pollution by combining IASI-NG and UVNS measurements from the EPS-SG satellite}, year = {2017}, number = {4}, volume = {10}, pages = {1281-1298}, issn = {1867-8548}, doi = {10.5194/amt-10-1281-2017}, journal = {Atmospheric Measurement Techniques}, url = {http://dx.doi.org/10.5194/amt-10-1281-2017}}

Will, A., Akhtar, N., Brauch, J., Breil, M., Davin, E., Ho-Hagemann, H. T. M., Maisonnave, E., Thürkow, M. and Weiher, S. (2017) The COSMO-CLM 4.8 regional climate model coupled to regional ocean, land surface and global earth system models using OASIS3-MCT: description and performance, 10 (4), pp. 1549-1586, doi:10.5194/gmd-10-1549-2017

[doi]

@ARTICLE{AR-CMGC-17-67, author = {Will, A. and Akhtar, N. and Brauch, J. and Breil, M. and Davin, E. and Ho-Hagemann, H.T.M. and Maisonnave, E. and Thürkow, M. and Weiher, S. }, title = {The COSMO-CLM 4.8 regional climate model coupled to regional ocean, land surface and global earth system models using OASIS3-MCT: description and performance}, year = {2017}, number = {4}, volume = {10}, pages = {1549-1586}, doi = {10.5194/gmd-10-1549-2017}}

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LE CERFACS RECRUTE

THESE PROPULSION (avec SAFRAN Tech et SAFRAN Helicoptères): Simulation de la combustion diphasique dans des systèmes mobiles. Application aux chambres à volume constant et aux déshuileurs

 

Required Education / Niveau requis Master ou école d'ingenieur From / Date de début 2016 Duration / Durée 3 ans Context / Contexte Les...Lire plus


Projet TILDA – Adaptation hp de la méthode des différences spectrales et application à l'aéroacoustique

 

Contexte : L'équipe AAM du CERFACS travaille au développement et au déploiement des codes de mécaniques des fluides les plus avancés pour la...Lire plus

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