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Computational Fluid Dynamics

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Airflow simulation around aircrafts, engines, buildings …

The CFD team (Computational Fluid Dynamics) is the biggest one at CERFACS. It focuses on flow simulation while developing advanced numerical methods applied to planes, rockets, helicopters, car engines, turbines, etc. The CFD team is strongly tied to other teams like GLOBC or PAE that also use CFD to forecast climate changes or the environmental impact of aviation: indeed, behind these themes, the equations that govern fluid flows are to be found first.

Calculate this engine before building it !

The CFD team develops essential tools in numerous applicative fields with a today well-known leitmotiv in the industrial world: let's calculate systems (planes, engines) before building them. This allows to reduce the cost of testing by one order of magnitude.  The CFD team is at the centre of this research along with its shareholders.

CFD is also a field where High Performance Computing is to be found : CFD simulations rely on fine computational grids with billions of points running on million-core supercomputers. Performing reliable and efficient calculations is another main focus for which Cerfacs is recognized as a key partner.

 

Team members

In memory of Hieu HA MINH and Vincent Van KEMENADE

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Project Leaders

Jean-François BOUSSUGE

Bénédicte CUENOT

Scientific Advisors

Thierry POINSOT

Pierre SAGAUT

Team Assistant

Marie LABADENS

Jade SCHWEIGER

Senior Researchers

Guillaume DAVILLER

Jérôme DOMBARD

Laurent GICQUEL

Thomas JARAVEL

Jean-Christophe JOUHAUD

Davide LAERA

Nicolas ODIER

Eléonore RIBER

Olivier VERMOREL

Research Engineer

Marc MONTAGNAC

Study Engineer

Guillaume BOGOPOLSKY

Thomas GIANOLI

Thibaut KIFFER

Rémi MACADRE

Thomas NAESS

Paul WERNER

Consultants

Pierre BOIVIN

Stéphane MOREAU

Jens-Dominik MULLER

Franck NICOUD

Michael RUDGYARD

7 postdoctoral researchers, 43 PhD students, trainees

 

 

NEWS

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

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