Large Eddy Simulation Exploration of Passive Flow Control Around an Ahmed Body
Journal article, 2014

Large eddy simulations (LES) are used to study passive flow control for drag reduction in a simplified ground vehicle. Add-on devices in the form of short cylinders are used for the formation of streaks in the streamwise direction that lead to the separation delay. The results of the present numerical simulations are compared with the experimental data and show good agreement. The two-stage flow control mechanism is analyzed from the LES results. It was found to be in agreement with the previous experimental observations that the counter-rotating vortices behind the impinging devices influence the separation only indirectly through the longitudinal vortices further downstream.

Author

Sinisa Krajnovic

Chalmers, Applied Mechanics, Fluid Dynamics

Journal of Fluids Engineering, Transactions of the ASME

0098-2202 (ISSN) 1528-901X (eISSN)

Vol. 136 12 A1

Subject Categories

Fluid Mechanics and Acoustics

DOI

10.1115/1.4027221

More information

Created

10/7/2017