Cedre® is Onera software for the multi-physics simulation of energetics and propulsion. Cedre has already been used in for many different configurations, from combustion in engines to calculations of jets for aeroacoustics.
Aerodynamic calculation of thrust reversers (in red at the rear of the engine) using the Cedre software, for Snecma and Teuchos, by Andheo and Onera.
At the request of the companies Snecma and Teuchos of the Safran group, Andheo, a partner of Onera, has just carried out a Cedre evaluation of configurations of nacelles with thrust reversers deployed.
The calculation was carried out on a configuration proposed by Teuchos: one nacelle in the rear position on a generic wings-fuselage-rudder configuration.
These calculations used unstructured hybrid meshes (supplied by Teuchos) of the 8 million meshes class. They were performed in parallel on 64 processors of the Onera supercomputer.
The feasibility, at industrial level, of this type of calculation has been established. Note that the post-processing of the Cedre software enables observers to follow the changes in the counter thrust generated by the reverser and the stresses to which the aircraft is subject during the calculation.
Aerodynamic calculation of thrust reversers (in white at the rear of the engine) using the Cedre software, for Snecma and Teuchos, by Andheo and Onera.
The deployment of a so-called "two door" thrust reverser.