LES of the Flow Around a 2-dimensional Vehicle Model with Active Flow Control
Paper in proceedings, 2010

The technique of large-eddy simulation (LES) was used to study the influence and the resulting flow mechanisms of the active flow control applied on a two-dimensional vehicle geometry. Duplication of a previous experimental study performed with LES was used to verify numerical approach. This was followed with exploration of the influence of flow actuation on the near-wake flow and resulting aerodynamic forces. Not only that a good agreement with the previous experimental study was obtained but also new knowledge was gained in form of complex interaction of the actuation with the coherent flow structures. The resulting time-averaged flow shows strong influence of the extension of the actuation slits and the lateral solid walls on the near-wake flow structures and thereby onto the resulting drag.

LES

vehicle aerodynamics

large eddy simulation

drag reduction

Ahmed body

active flow control

Author

Sinisa Krajnovic

Chalmers, Applied Mechanics, Fluid Dynamics

Joao Fernandes

Chalmers, Applied Mechanics, Fluid Dynamics

ERCOFTAC Series

1382-4309 (ISSN) 2215-1826 (eISSN)

Vol. 13 505-511

Subject Categories

Fluid Mechanics and Acoustics

DOI

10.1007/978-90-481-3652-0_73

ISBN

978-904813651-3

More information

Created

10/7/2017