TY - JOUR
TI - Volumetric 3-component velocimetry measurements of the flow field on the rear window of a generic car model
AU - Tounsi Nabil
AU - Fourrié Grégoire
AU - Oualli Hamid
AU - Keirsbulck Laurent
AU - Hanchi Samir
AU - Labraga Larbi
JN - Thermal Science
PY - 2012
VL - 16
IS - 1
SP - 313
EP - 320
PT - Article
AB - Volumetric 3-component Velocimetry measurements are carried out in the flow  field around the rear window of a generic car model, the so-called Ahmed  body. This particular flow field is known to be highly unsteady, three  dimensional and characterized by strong vortices. The volumetric velocity  measurements from the present experiments provide the most comprehensive data  for this flow field to date. The present study focuses on the wake flow  modifications which result from using a simple flow control device, such as  the one recently employed by Fourrié et al. [1]. The mean data clearly show  the structure of this complex flow and confirm the drag reduction mechanism  suggested by Fourrié et al. The results show that strengthening the separated  flow leads to weakening the longitudinal vortices and vice versa. The present  paper shows that the Volumetric 3-component Velocimetry technique is a  powerful tool used for a better understanding of a threedimensional unsteady  complex flow such that developing around a bluffbody.