Industrial Aerodynamics

Abstract

This chapter describes the use of computational fluid mechanics at Dassault Aviation. A historical perspective gives a measure of the successive giant steps that have been made over the past 30 years. A rather detailed description of industrial codes leads to a good understanding of the key numerical concepts assembled to create a powerful tool for computational aerodynamics. The fundamental issue of turbulence modeling is addressed in detail. A large range of complex applications is described to illustrate the variety of problems solved. The status of the development and application of shape optimization techniques and multidisciplinary design are finally illustrated.

An analysis of the performance of a high-order stabilised finite element method for simulating compressible flows

“…Stabilised finite element methods, such as the streamline upwind/Petrov-Galerkin (SUPG) method [4] or the Galerkin/least-squares (GLS) method [5], are well established and already employed in certain industrial and commercial codes [6,7]. However, stabilised finite element methods have, traditionally, been employed with linear elements [8].…”

High-Order Variational Multiscale Model in Finite Elements Applied to the LEISA-2 Configuration

“…Equation 2is solved with a finite element method [14] implemented in the in-house solver AETHER developed by Dassault Aviation. A description of the flow solver can be found in Chalot and Perrier [15]. In what follows, only the main steps of the numerical algorithm are introduced.…”

An anisotropic adaptive finite element algorithm for transonic viscous flows around a wing

“…The ONERA M6 wing at Reynolds number 11:72e6, Mach number 0.84 and incident angle 3.06°is considered [30]. The computations have been performed using the AETHER Dassault Aviation code [31,15] on various parallel clusters using the MPI library, with at most 5000 iterations. It should be stressed that the AETHER code is based on stabilized finite element formulations that allow the use of strongly anisotropic meshes and is therefore particularly well suited for anisotropic mesh adaptation.…”

“…Strongly anisotropic structured meshes are already widely used in the aeronautic industry for the numerical simulation of transonic viscous bodies [13][14][15]. However, the computation of transonic flows on anisotropic structured meshes around the body and anisotropic unstructured adaptive meshes elsewhere, see Fig.…”