Séminaire du Professeur Siniša Krajnović (Université Technologique Chalmers de Göteborg, Suède)
Date : mardi 4 Juin à 14h00, salle 115 du Bâtiment Malvache (LAMIH)
Title : Unsteady numerical simulations of flows around ground vehicles
Abstract : The talk discusses how flow-resolving LES simulations are used to predict and explain flows around vehicle-like bluff bodies. Several different applications of the LES are presented including bodies in unsteady winds, flow control and asymmetry phenomena of the wake behind notchback geometries. The focus of the talk is in explaining the flows around vehicle-like bluff bodies using numerical simulations. Differences between results of dynamic and quasi-steady tests are studied and the flow mechanisms responsible for phenomena such as hysteresis, phase shift and overshoots of forces and moments are explained. Several different applications of flow control will be explored and it will been shown that LES is useful as a tool for designing the means of flow control for drag reduction purposes. The last example of simulation of notchback geometry demonstrates the usage of LES to explain the phenomena of wake asymmetry in a symmetric geometric set-up. Although, the observation of such asymmetry is documented in the literature, the underplaying flow phenomena is unknown and the present LES gives first indications for the explanation of the underlying flow mechanism.
Séminaire multidisciplinaire commande - thermique LAMIH-TEMPO (15/02/2013, de 9h à 12h, salle 115, bat. Malvache)
- "Etat d'avancement sur la modélisation et la commande des moteurs essence au sein de l'équipe ASHM" par Jimmy Lauber
- "Optimisation énergétique des paramètres de fonctionnement d'un moteur Stirling" par Fethi Aloui
- "Véhicules hybrides" par Sébastien Delprat
- "Unité de microcogénération biomasse" par Eric Delacourt
Suite à ces exposés et discussions scientifiques qui émergeront, une visite des cellules moteurs TEMPO-LAMIH sera organisée.
Contact : Prof. Céline Morin
Séminaire DF2T (14/06/2011)
Conférences co-organisées par des équipes de TEMPO
Eurotherm Seminar n° 96 : Eurotherm Seminar on Convective Heat Transfer Enhancement (17-19/09/2013)
IESM 2011 : International Conference on Industrial Engineering and Systems Management (25-27/05/2011)
JEF 2010 : 6th European Conference on Braking (24-25/11/2010)