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FOI is currently engaged in pure and applied aerodynamics research activities for both civil and military applications. The purpose is to enhance our capability to evaluate and produce new aircraft concepts with regard to their fundamental flight performance, stability, weapon integration, weapon separation and design of air intakes etc. FOI’s aerodynamic research is conducted in close collaboration with the Swedish aircraft industry.

The research is directed mainly towards the simulation of non-steady flow phenomena using CFD (Computational Fluid Dynamics) methods as well as flow control, aerodynamic design and shape optimisation. The tools and methods developed are applied to aircraft and other aerial vehicles, or parts of vehicles, e.g. wings, high-lift systems as well as engine intakes and outlets.

CFD (Computational Fluid Dynamics) is a branch of fluid mechanics in which numerical methods are used to analyse flow problems. The principal foundations on which CFD rests are the Navier-Stokes equations. These consist of a system of partial differential equations which primarily describe the time and space dependent velocity field in a fluid. The equations are non-linear and have to be solved numerically. FOI is developing its own CFD software, the fluid code Edge, in order to solve the compressible Navier-Stokes equations on computer networks using a so-called finite volume method. The flow solver Edge is being developed in collaboration with Saab, the Royal Institute of Technology and other partners and it forms the basic aerodynamic tool for Saab’s aeronautical activities.

FOI, Swedish Defence Research Agency

Swedish Defence Research Agency
SE-164 90 Stockholm

Phone +46 8 555 030 00
Fax +46 8 555 031 00

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