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Numerical Investigation of the Flow Field Around Delta Wings

Delta wings, or wings with a triangular planform, are an important reference configuration for applied high-performance aerodynamics as well as for basic fluid mechanics studies. They represent tailless aircrafts, so called flying wings, or high-speed high-agility aircrafts with low aspect-ratio wings. Delta wings with smaller dimensions are frequently used for passive flow control (so called vortex generators). The flow around delta wings involves much more complex fluid-flow phenomena than the flow around conventional wings with high aspect ratio. This additional complexity mostly results from strong interactions between lift dependent leading-edge vortices. Detailed turbulence resolving numerical simulations, such as those conducted in this project, are therefore indispensable.

Isosurface of streamwise vorticity colored by streamwise velocity for the VFE-2 delta wingIsosurface of streamwise vorticity colored by streamwise velocity for the VFE-2 delta wing at an angle of attack of 13º and Re = 0.5x10^6.
Copyright: Stefan Hickel, TU München

Full article in inSide, Vol. 10 No. 2

Dr. Stefan Hickel
Large Eddy Simulation Group, Institute of Aerodynamics and Fluid Mechanics, Technische Universität München
D-85747 Garching bei München
e-mail: sh@tum.de

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