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

Författare

Sinisa Krajnovic

Chalmers, Tillämpad mekanik, Strömningslära

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

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

Ämneskategorier

Strömningsmekanik och akustik