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17 positions
3 thesis 24 training periods Last 30 articles accepted for publicationEffects of radiative heat transfer on the structure of turbulent supersonic channel flow,
S. Ghosh, R. Friedrich, M. Pfitzner, CHR. Stemmer, B. Cuenot and M. El Hafi Journal Fluid Mechanics, Vol. 677, pp. 417-444, 2011 On the Relative Impact of Subgrid-Scale Modelling and Conjugate Heat Transfer in LES of Hot Jets in Cross-Flow over Cold Plates, Y. Hallez, J-C Jouhaud, T. Poinsot International Journal for Numerical Methods in Fluids, Vol. 67, Issue 10, pp. 1321-1340, December 2011 Validation of Numerical Prediction of Dynamic Derivatives: Two Test Cases, B. Mialon, A. Khrabrov, A. Da Ronch, K. Badcock, L. Cavagna, P. Eliasson, M. Zhang, S. Ricci, A. Huebner, S. Ben Khelil, J-C Jouhaud, G. Rogé, S. Hitzel, M. Lahuta, Progress in Aerospace Sciences, Vol 47, N. 8, pp. 674-694, 2011. Large-Eddy Simulation of combustion instabilities in a lean partially premixed swirled flame, B. Franzelli, E. Riber, L. Giquel and T. Poinsot, Combustion and flames, 159, 2, 621-637, 2012. Sensitivity analysis of transfer functions of laminar flames, F. Duchaine, F. Boudy, D. Durox and T. Poinsot Combustion and flames, 158, 2384-2394, 2011. A contribution to the conditionning of the total least-squares problem, M. Baboulin, S. Gratton SIAM Journal on Matrix Analysis and Applications, 32, pp. 685-699 (2011) On the use of Finite-Time Lyapunov Exponents and Vectors for direct assimilation of tracer images into ocean models, O. Titaud, J.M. Brankart, J. Vernon Tellus A., 63(5), 1038-1051 (2011) Fast regularized linear sampling for inverse scattering problems,
M'B. Fares, S. Gratton, Ph. L. Toint
Numercial Linear Algebra and Applications, 18-1, pp. 95-112 (2011)
Evolution potentielle du régime des crues de la Seine sous changement climatique, A. Duchame, E. Sauquet, F. Habets, M. Déqué, S. Gacoin, A. Hachour, E. Martin, L. Ourdin, C. Pagé, L. Terray, D. Thiéry, P. ViennotLa houille blanche, N°1-2011, 51-57 Stopping rules and backward error analysis for bound-constrained optimization,
S. Gratton, M. Mouffe, Ph. L. Toint
Numerische Mathematik, 119-1, pp. 163-187 (2011)
Coupled atmosphere: mixed layer ocean response to ocean heat flux convergence along the Kuroshio Current Extension,
Y.O. Kwon, C. CassouClimate Dynamics, 36, 11-12, 2295-2312 A class of limited memory preconditionners for large scale linear systems with multiple right-hand sides, S. Gratton, A. Sartenaer, J. TshimangaSIAM Journal on Optimization, 21-3, pp. 912-935 (2011) A statistical-dynamical scheme for ocean downscaling in the Atlantic. Part II: Methodology, validation and application to high resolution ocean models,
M. Minvielle, C. Cassou, L. Terray, R. Bourdalle-BadieClimate Dynamics, 36, 3-4, 401-417 Inexact range-space Krylov solvers for linear systems arising from inverse problems, S. Gratton, Ph. L. Toint, J. Tshimanga llungaSIAM Journal on Matrix Analysis and Applications, 32-3, pp. 969-986 (2011) A statistical-dynamical scheme for ocean downscaling in the Atlantic. Part I : Weather regimes as predictors for surface ocean variables , Climate Dynamics, 36, 1-2, 19-39 GRACE-derived surface mass anomalies by energy integral approach. An application to continental hydrology, G. Ramillien, R. Biancale, S. Gratton, X. Vasseur and S. Bourgogne
Journal of Geodesy, 85-6, pp. 313-328 (2011)
Natural forcing of climate during the last millennium: fingerprint of solar variability Low frequency solar forcing and NAO, D. Swingedouw, L. Terray, C. Cassou, A. Voldoire, D. Salas-Mélia, J. Servonnat Climate Dynamics, 36, 7-8, 1349-1364 The Electromagnetic Interior Transmission Problem for Regions with Cavities,
A. Cossonière and H. Haddar
SIAM J. Math. Anal., 43, pp. 1698-1715 (2011)
The Regional Ocean Modeling System (ROMS) T4-dimensional variational data assimilation sustems, part I - System overview and formulation, A.M. Moore, H.G. Arango, G. Broquet, B.S. Powell, A. Weaver, A.T and J. Zaval-GarayProgress in Oceanography, 91, 34-49 Asymptotic and numerical analysis for Holland and Simpson's thin wire formalism,
X. Claeys and F. Collino
Journal of Computational and Applied Mathematics, 235-15, pp. 4418-4438 (2011)
Increase of intense storm activity during the little ice age on the French Mediterranean Coast, L. Dezileau, P. Sabatier, P. Blanchemanche, B. Joly, D. swingedouw, C. Cassou, U. Von Grafenstein, P. MartinezPaleo-3, 299, 1-2, 289-297 Reduced Basis Method for the parametrized Electric Field Integral Equation,
M'B. Fares, J. Hesthaven, Y. Maday, B. Stamm
J. Comput. Phys., 230-14, pp. 5532-5555 (2011)
Evaluation of probalistic quality and value of the ENSEMBLES multi-model seasonal forecasts: comparison with DEMETER, A. Alessandrini, A. Borelli, A. Navarra, A. Arribas, M. Deque, P. Rogel, A. WaisheimerMonthly Weather Review, Vol 139 N°2, pp 581-607, 2011 Modeling the climate impact of road transport, maritime shipping and aviation over the period 1860-2100 with an AOGCM,
D.J.L. Olivié, D. Cariolle, H. Teyssèdre, D. Salas, A. Voldoire, H. Clark, D. Saint-Martin, M. Michou, F. Karcher, Y. Balkanski, M. Gauss, O. Dessens, B. Koffi, and R. Sausen
Atmos. Chem. Phys. Discuss On North American Decadal Climate for 2011-20, M. Hoerling, J. Hurrel, A. Kumar, L. Terray, J. Eischeid, Ph. Pegion, T. Zhang, X. Quan, T. XuJournal of Climate, Volume 24, Issue 16, 4519-4528 Simulation numérique à haute performance pour les moteurs d'hélicoptères du futur,
T. Poinsot, G. Staffelbach, T. Lederlin, P. Escourrou et C. Berat
Centraliens, Numéro 611, juin 2011. Why does the Antartic Peninsula Warm in climate simulations ? X. Qu, A. Hall, J. BoéClimate Dynamics. A highly parallel Chimera method for overset grids based on the implicit hole cutting technique,
B. Landmann, M. Montagnac
International Journal for Numerical Methods in Fluids (2011) 778-804. What shapes mesoscale wind anomalies in coastal upwelling zones ?, J. Boé, A. Hall, F. Colas, J.C. McWilliams, X. QuClimate Dynamics, 36(11-12), 2011. Numerical and analytical modelling of entropy noise in a supersonic nozzle with a shock,
M. Leyko, S. Moreau, F. Nicoud, T. Poinsot
Journal of sound and vibration 330 (2011) 3944-3958. |
Two new members for CERFACS' Scientific ConcilOn january 26th Next CERFACS' Scientific Concil meeting will welcome two new members :
CERFACS wins 2 INCITE awards and 30 millions hoursCERFACS is proud to participate in the INCITE initiative with two awards for 2012 in the field of (1) combustion and (2) the environmental impact of aviation. The combustion project (contact G. Staffelbach gabriel.staffelbach@cerfacs.fr for details) focuses on unsteady combustion processes like combustion instabilities and ignition sequences. This study allows a better understanding of their underlying mechanisms and possible solutions to problematic situations in these frameworks. An award of 10 million CPU hours will be used to study Combustion on gas turbines with the code AVBP of CERFACS and IFPEN. In the environmental project (contact R. Paoli, roberto.paoli@cerfacs.fr for details), 20 million CPU hours have been granted to investigate the physics of contrails, an important component of aviation environmental impact, using high-resolution large-eddy simulations with MésoNH atmospheric model. This CERFACS-Laboratoire d'Aérologie joint project will help understand the physical mechanisms driving the transition between contrails and cirrus clouds that occurs when atmospheric processes become predominant compared to the dynamics of the aircraft wake. The outcome of this study will be also used to develop parameterizations of aircraft-induced perturbations in next-generation global and climate models. For more information see INCITE awards press release http://www.doeleadershipcomputing.org CERFACS initiates a training programme for computer scienceIn 2011, CERFACS initiates a training programme for computer science targeting students, PHDs, engineers and researchers, in academy and applied research. The training sessions are taught by CERFACS researchers and engineers. Pratical training sessions dedicated to codes developed or co-developed by CERFACS(AVBP, OpenPALM,DSCLIM, CESC, OASIS) are part of the programme. The detailed programme and all information are available on the CERFACS website: www.cerfacs.fr/training/ CERFACS, CNRM-GAME and the Laboratoire d'Aérologie win a PRACE awardCERFACS, CNRM-GAME and the Laboratoire D'Aérologie have been awarded by PRACE (www.prace-project.eu) an allocation of 21 million CPU hours to study the role of turbulent stratified flows in the meteorological hazard and the environmental impact of aviation.These computational resources will be used to understand how atmospheric turbulence controls the dispersion of aircraft emissions and the occurrence of hazardous events like clear-air turbulence and fog formation in the vicinity of airports. For more information contact roberto.paoli@cerfacs.fr. CERFACS' top downloaded article of its class in June 2011The paper "A Time-Domain Harmonic Balance Method for Rotor/Stator Interactions" by F. Sicot, G. Dufour and N. Gourdain, Journal of Turbomachinery, 2012, 134, 011001, doi:10.1115/1.4003210 was the top downloaded article in June 2011 (http://asmedl.aip.org/journals/doc/ASMEDL-home/most_downloaded.jsp?KEY=JOTUEI&Year=2011&Month=6&agg=md) and remain third in July. This paper describes a fast and efficient spectral method to compute turbomachinery flows. CERFACS has performed a very large ensemble of climate simulations to study decadal climate predicabilityThe CERFACS/CNRS Climate Modelling and Global Change Team has recently achieved a very large ensemble of decadal hindcasts and forecasts simulations in the framework of the Coupled Model Intercomparison Project version 5 (CMIP5) exercise which will provide the modelling results for the next Intergovernmental Panel on Climate Change (IPCC) assessment report planned in 2013. The climate model is the CNRM-CM5 model developed jointly with the Centre National de Recherches Météorologiques (CNRM). More than 5000 years of simulated climate have been performed requiring 200 000 CPU hours on the Météo-France NEC supercomputer. Post-processing and analysis of the 120 Terabytes generated is on going. The main scientific objective is to investigate the possibility of climate predictability at decadal time scales and the relevant physical mechanisms. CERFACS and EM2C lab (Ecole Centrale Paris) win a PRACE award to develop Large Eddy Simulation of rocket flows on new BULL systemThe PRACE initiative (www.prace-project.eu) has announced that the proposal of EM2C and CERFACS to compute a new experiment dedicated to rocket flows and installed at ONERA was accepted. From July 2011 and for a duration of 1 year 8.5 million CPU hours will be used jointly by researchers in Toulouse and Paris to investigate how supercritical flows react to transverse acoustic forcing.
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