NUMERICAL STUDY OF DRAG REDUCTION OF GENERIC VEHICLE BODY USING IMPINGING DEVICES
Paper in proceedings, 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

Author

Sinisa Krajnovic

Chalmers, Applied Mechanics, Fluid Dynamics

th International Conference on Jets, Wakes and Separated Flows, ICJWSF2013 September 17-21, 2013, Nagoya, JAPAN

Driving Forces

Sustainable development

Areas of Advance

Transport

Infrastructure

C3SE (Chalmers Centre for Computational Science and Engineering)

Subject Categories

Fluid Mechanics and Acoustics

More information

Created

10/6/2017