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Cerfacs in brief

Centre of basic and applied research specialized in modelling and numerical simulation, Cerfacs, through its facilities and expertise in high-performance computing, deals with major scientific and technical research problems of public and industrial interest.

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NEWS

Cerfacs funded for the EoCoE-II European center of excellence

superadmin |  11 October 2018

The European center of excellence EoCoE-II brings together 20 partners from 7 European countries around exascale computing for energy-oriented numerical models. As a follow-up to the proof-of-principle phase of EoCoE (energy-oriented center of excellence), EoCoE-II will build on its unique,...Read more


Cerfacs funded by the EU for more than 1 MEuros thanks to the IS-ENES3 and ESiWACE2 projects

superadmin |  4 October 2018

IS-ENES3 is the third phase of the distributed e-infrastructure of ENES (European Network for Earth System modelling), enabling the European climate modelling community to address the challenges of international intercomparison project CMIP6. IS-ENES3 will develop, document and deploy new and...Read more

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CALENDAR

No event has been found

Thu

22

Nov

The 22 November 2018

Versioning systems: introduction to GIT

Versioning systems: introduction to GIT

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Fri

23

Nov

The 23 November 2018

Mesh generation using CENTAUR

Mesh generation using CENTAUR

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Mon

26

Nov

From 26 November 2018 to 30 November 2018

Numerical methods for Large Eddy Simulations

Numerical methods for Large Eddy Simulations

 

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RESEARCH 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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Direct Numerical Simulation of Turbulent Combustion

 

Context CERFACS develops numerical tools for the study and prediction of turbulent reactive flows, for various types of applications ranging from...Read more


Modeling and numerical simulation of Hall effect thrusters

 

Context Safran developed its first plasma propulsion engine, the PPS-1350, in 1995. The main advantage of electric propulsion is the gain in...Read more

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