Industrialists and government agencies have praised the technological effect prediction quality of ONERA's aerodynamic simulationsoftware elsA. The latest developments around the multigrid method Chimère have been due to the complexity and details in regard to turbomachinery... At that time, the industrialists, the DGA and the DGAC applauded the technological effect prediction quality of ONERA's aerodynamic simulationsoftware elsA
The ZDES method, included in Onera's aerodynamic simulationsoftware" elsA' and soon to be included in" the Cèdre" energetic software, is also useful to other applications such as civilian aircraft (buffeting prediction), helicopters, issues of stealth for jets and drones, and it could also be useful in other fields such as automobiles and hydrodynamics
The French Air and Space Academy has given an award for Cedre, ONERA's reference simulationsoftware for energy and propulsion, used both in research and in the aerospace industry... This medal was awarded in recognition of the success of the Cedre code, ONERA's reference simulationsoftware for energy and propulsion
Moreover, Onera successfully carried out a simulation by ZDES with the elsA simulationsoftware, based on a structured5 multi-block mesh of approximately 34 million points. This unsteady calculation was extended by a calculation of the noise radiation using an integral method (Kim code)
In numerical simulation, validation consists in showing that a software application, and thus the models that it uses, give results consistent with experiments... In flow simulation, it is therefore a case of testing the software's ability to correctly describe the physics of the flow... Many databases for validating simulationsoftware, in particular in aerodynamics, have been created and shared among NATO members, under the aegis of the AGARD
French Centre for Research and Advanced Training in Scientific Computing elsA: aerodynamic simulationsoftware package co- developed mainly by ONERA, Airbus, and Safran. Quelques liens utiles
It is only the 3D grids that are input into the simulationsoftware, taking the form of the surface of the helicopter and its components (colored zones in the figure above). The 3D sub-domains in black are parallelepiped grids that are automatically generated and periodically recomputed
They then performed aeroelasticity calculations (using the Rotor code) and aerodynamic calculations using the elsA simulationsoftware. "This program was created for blades working at high speed
