NUMERICAL STUDY OF DRAG REDUCTION OF GENERIC VEHICLE BODY USING IMPINGING DEVICES
Paper i proceeding, 2013
Large Eddy Simulations are used to study passive
flow control for drag reduction of simplified ground vehi-
cle. Add on devices in form of short cylinders are used for
formation of streaks in the streamwise direction leading
to the separation delay. The result of the present nu-
merical simulations are compared with the experimen-
tal data showing good agreement. The two-stage flow
control mechanism is analyzed from the LES results. It
was found in agreement with the previous experimental
observations that the counter-rotating vortices behind
the impinging devices influence the separation only in-
directly through the longitudinal vortices further down-
stream
LES
vehicle aerodynamics
flow control
Ahmed body
large-eddy simulation