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European Research Night 2017 : the CERFACS stand

CERFACS was present at the European Researcher Night 2017 at the  Quai des Savoirs à Toulouse a with a stand entitled “Can one enter an engine, an airplane or the whole Earth into a computer”?

The stand of the Cerfacs at the Quai des Savoirs in Toulouse (click on the image for a slower scroll)

Interactive presentation of the stand (click on the image for a commented game of 15 mn)

To the left of the stand, a silent animation presented examples of numerical simulations carried out at CERFACS: the power of supercomputers, flames, engines, gas turbines, aircraft, floods and climate. Projected on the wall, an interactive slideshow allowed the public to immerse themselves in the world of numerical simulation by answering questions of increasing difficulty using color boxes with the letters A, B or C: notion of digital grid , space or time steps, number of dimensions, increased power of computers, flames, aircraft, floods, climate and hurricanes. A hundred people were attentive to the CERFACS booth and many participated in the quiz from the beginning to the end of the presentation. Matthias Delozzo, Sophie Ricci, Olivier Thual and Sophie Valcke, representing CERFACS on the booth, were able to interact with the public through various discussions on scientific computing.

The media and the CERFACS stand:


First 360-degrees Large-Eddy Simulation of a full engine

Jérôme DOMBARD |  17 June 2020

Within the PRACE project FULLEST (First fUlL engine computation with Large Eddy SimulaTion), a joint collaboration between CERFACS, SAFRAN and AKIRA technologies, Dr. C. Pérez Arroyo (post doctoral fellow at CERFACS) has carried out under the supervision of Dr. J. Dombard the first high-fidelity simulation of a part of the real engine DGEN380 (for now, from the fan to the combustion chamber). This 360-degrees integrated large-eddy simulation contains around two billion cells on the three instances, carried out with the AVBP code of CERFACS.  The CPU cost is obviously large but still within reach, performing around one turn of fan during 5 days over 14400 skylake cores. Post-treatments are in progress and already show, among other complex phenomena, a strong interaction between the high pressure compressor and the combustion chamber (see forthcoming paper GT2020-16288 C. Pérez Arroyo et al). Below a video showing: in the fan an isosurface at mid-height of the vein colored by the Mach number, in the high pressure compressor a gradient of density, in the bypass of the combustion chamber the static pressure and in the flame tube a temperature field. One of the goals of the project is to create a high-fidelity unsteady database to study interactions between modules and may help other teams to develop new lower order models and/or validate existing ones. Beyond the feasibility and the maturity of the AVBP code, this kind of calculation is an important milestone for the aeronautical industry and would allow to apprehend earlier in the design the effect of integration and installation and thus, to reduce the cycle and therefore the cost of the future aircraft engines. PRACE and GENCI CPU ressources and Safran Tech/DGAC fundings are gratefully acknowledged, along with the invaluable technical support at CERFACS: Dr. G. Staffelbach, Dr. F. Duchaine, Dr. L. Gicquel, Dr....Read more

B. Cuenot distinguished as Program Chair of international Symposium on Combustion

superadmin |  29 May 2020

B. Cuenot has been distinguished as Program Chair for the 39th International Symposium on Combustion, to be held in Vancouver (Canada) in 2022. The International Symposium on Combustion is a major event for the combustion community, where the current best research is presented.Read more