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

Le Cerfacs financé pour le centre d’excellence européen EoCoE-II

11 octobre 2018

Le centre d'excellence européen EoCoE-II rassemble 20 partenaires de 7 pays européens autour du calcul exaflopique pour la modélisation numérique dans le domaine de l'énergie. Dans le prolongement de la phase de démonstration de principe d'EoCoE (energy-oriented center of excellence),...Lire la suite


Le Cerfacs financé par l'Europe à hauteur de plus de 1 MEuros grâce aux projets IS-ENES3 and ESiWACE2

4 octobre 2018

IS-ENES3 est la 3e phase de l’infrastructure logicielle distribuée d’ENES (European Network for Earth System modelling) permettant à la communauté Européenne de modélisation du climat de faire face aux défis du programme d’intercomparaison internationale CMIP6. IS-ENES3 vise le...Lire la suite

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NOS PUBLICATIONS

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}}

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}}

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}}

Douasbin, Q., Scalo, C., Selle, L. and Poinsot, T. (2018) Delayed-time domain impedance boundary conditions (D-TDIBC), Journal of Computational Physics, 371 (October), pp. 50-66, doi:10.1016/j.jcp.2018.05.003

[url] [doi]

@ARTICLE{AR-CFD-18-127, author = {Douasbin, Q. and Scalo, C. and Selle, L. and Poinsot, T. }, title = {Delayed-time domain impedance boundary conditions (D-TDIBC)}, year = {2018}, number = {October}, volume = {371}, pages = {50-66}, doi = {10.1016/j.jcp.2018.05.003}, journal = {Journal of Computational Physics}, abstract = {Defining acoustically well-posed boundary conditions is one of the major numerical and theoretical challenges in compressible Navier–Stokes simulations. We present the novel Delayed-Time Domain Impedance Boundary Condition (D-TDIBC) technique developed to impose a time delay to acoustic wave reflection. Unlike previous similar TDIBC derivations (Fung and Ju, 2001–2004 [1], [2], Scalo et al., 2015 [3] and Lin et al., 2016 [4]), D-TDIBC relies on the modeling of the reflection coefficient. An iterative fit is used to determine the model constants along with a low-pass filtering strategy to limit the model to the frequency range of interest. D-TDIBC can be used to truncate portions of the domain by introducing a time delay in the acoustic response of the boundary accounting for the travel time of inviscid planar acoustic waves in the truncated sections: it gives the opportunity to save computational resources and to study several geometries without the need to regenerate computational grids. The D-TDIBC method is applied here to time-delayed fully reflective conditions. D-TDIBC simulations of inviscid planar acoustic-wave propagating in truncated ducts demonstrate that the time delay is correctly reproduced, preserving wave amplitude and phase. A 2D thermoacoustically unstable combustion setup is used as a final test case: Direct Numerical Simulation (DNS) of an unstable laminar flame is performed using a reduced domain along with D-TDIBC to model the truncated portion. Results are in excellent agreement with the same calculation performed over the full domain. The unstable modes frequencies, amplitudes and shapes are accurately predicted. The results demonstrate that D-TDIBC offers a flexible and cost-effective approach for numerical investigations of problems in aeroacoustics and thermoacoustics.}, keywords = {COMB, Impedance boundary condition, Time delay, Characteristic boundary conditions ,NSCBC, Computational aeroacoustics, Thermoacoustics}, url = {https://www.sciencedirect.com/science/article/pii/S002199911830295X}}

Serazin, G., Penduff, T., Barnier, B., Molines, J. M., Arbic, B. K., Muller, M. and Terray, L. (2018) Inverse Cascades of Kinetic Energy as a Source of Intrinsic Variability : A Global OGCM Study, Journal of Physical Oceanography, 48, pp. 1385-1408, doi:10.1175/JPO-D-17-0136.1

[pdf] [Supplementary Material] [doi]

@ARTICLE{AR-CMGC-18-106, author = {Serazin, G. and Penduff, T. and Barnier, B. and Molines, J.M. and Arbic, B.K. and Muller, M. and Terray, L. }, title = {Inverse Cascades of Kinetic Energy as a Source of Intrinsic Variability : A Global OGCM Study}, year = {2018}, volume = {48}, pages = {1385-1408}, doi = {10.1175/JPO-D-17-0136.1}, journal = {Journal of Physical Oceanography}, pdf = {https://cerfacs.fr/wp-content/uploads/2018/09/Article-GlobC_Serazin_terray-et_al_JPO_2018.pdf}, supplementaryMaterial = {https://doi.org/10.1175/JPO-D-17- 0136.s1}}

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LE CERFACS RECRUTE

Chercheur post doctoral en combustion numérique

 

Required Education / Niveau requis POST DOC From / Date de début immédiatement Duration / Durée 2 ans Context / Contexte Le CERFACS...Lire plus


Sujet : Impacts du changement climatique sur les pluies, les débits et les inondations extrêmes des bassins versants méso-échelle en région méditerranéenne. Excercice de modélisation hydrologique sur un bassin méditerranéen.

  STAGE DE MASTER 2 Recherche : HydroSciences Montpellier (HSM) Université de Montpellier (UM) – WSP (bureau d’études)...Lire plus

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