LES of the flow around several cuboids in a row
Artikel i vetenskaplig tidskrift, 2013

This paper presents Large Eddy Simulations (LES) of flow around a four-vehicle platoon when one of the platoon members was forced to undergo in-line oscillations. The LES were made at the Reynolds number of 10(5) based on the height of the vehicles. Combinations of two different frequencies corresponding to non-dimensional frequencies at the Strouhal numbers St(1) = 0.025 and St(2) = 0.013 and two oscillation amplitudes were used in this study. The methodology was validated by comparisons with data from previous experimental investigations. In order to highlight the dynamic effects, comparisons were made with steady results on a single vehicle and on a four-vehicle platoon. Large differences were found in the flow structures between quasi-steady and dynamic results. Furthermore, the behavior of the drag coefficient of the upstream neighbor of the oscillating model was investigated. (C) 2013 Elsevier Inc. All rights reserved.

Unsteady vehicle aerodynamics

Platooning

LARGE-EDDY SIMULATION

Grid deformation

Hysteresis

AERODYNAMICS

BLUFF-BODIES

Vehicle

LES

Författare

David Uystepruyst

Chalmers, Tillämpad mekanik, Strömningslära

Sinisa Krajnovic

Chalmers, Tillämpad mekanik, Strömningslära

International Journal of Heat and Fluid Flow

0142-727X (ISSN)

Vol. 44 414-424

Ämneskategorier

Maskinteknik

DOI

10.1016/j.ijheatfluidflow.2013.07.011