title: High-fidelity simulations of unsteady civil aircraft aerodynamics: stakes and perspectives. Application of zonal detached eddy simulation.
abstract: This paper provides an up-to-date survey of the use of zonal detached eddy simulations (ZDES) for unsteady civil aircraft applications as a reflection on the stakes and perspectives of the use of hybrid methods in the framework of industrial aerodynamics. The issue of zonal or non-zonal treatment of turbulent flows for engineering applications is discussed. The ZDES method used in this article and based on a fluid problem-dependent zonalization is briefly presented. Some recent landmark achievements for conditions all over the flight envelope are presented, including low-speed (aeroacoustics of high-lift devices and landing gear), cruising (engine-airframe interactions), propulsive jets and off-design (transonic buffet and dive manoeuvres) applications. The implications of such results and remaining challenges in a more global framework are further discussed.
authors.affiliation: ONERA-The French Aerospace Laboratory, 92190 Meudon, France sebastien.deck@onera.fr.
authors.forename: Sébastien
authors.initials: S
authors.lastname: Deck
authors.affiliation: ONERA-The French Aerospace Laboratory, 92190 Meudon, France.
authors.forename: Fabien
authors.initials: F
authors.lastname: Gand
authors.affiliation: ONERA-The French Aerospace Laboratory, 92190 Meudon, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Brunet
authors.affiliation: ONERA-The French Aerospace Laboratory, 92190 Meudon, France.
authors.forename: Saloua
authors.initials: S
authors.lastname: Ben Khelil
keywords: aerodynamics; computational fluid dynamics; large eddy simulation; turbulence modelling