Aerodynamics of heavy vehicles

H Choi, J Lee, H Park - Annual Review of Fluid Mechanics, 2014 - annualreviews.org
We present an overview of the aerodynamics of heavy vehicles, such as tractor-trailers, high-
speed trains, and buses. We introduce three-dimensional flow structures around simplified …

Turbulent wake past a three-dimensional blunt body. Part 1. Global modes and bi-stability

M Grandemange, M Gohlke, O Cadot - Journal of Fluid Mechanics, 2013 - cambridge.org
The flow around the three-dimensional blunt geometry presented in the work of Ahmed,
Ramm & Faitin (Tech. Rep., 1984) is investigated experimentally at, the wake presents weak …

[HTML][HTML] A coupled wind-vehicle-bridge system and its applications: a review

CS Cai, J Hu, S Chen, Y Han, W Zhang… - Wind and Structures, 2015 - koreascience.kr
The performance of bridges under strong wind and traffic is of great importance to set the
traveling speed limit or to make operational decisions for severe weather, such as …

On the need for a nonlinear subscale turbulence term in POD models as exemplified for a high-Reynolds-number flow over an Ahmed body

J Östh, BR Noack, S Krajnović, D Barros… - Journal of Fluid …, 2014 - cambridge.org
We investigate a hierarchy of eddy-viscosity terms in proper orthogonal decomposition
(POD) Galerkin models to account for a large fraction of unresolved fluctuation energy …

LES study of the influence of the nose shape and yaw angles on flow structures around trains

H Hemida, S Krajnović - Journal of Wind Engineering and Industrial …, 2010 - Elsevier
Large-eddy simulation (LES) is made of the flow around a generic train model at two
different yaw angles of 90∘ and 35∘. The Reynolds numbers, based on the freestream …

Flow around a simplified car, part 1: large eddy simulation

S Krajnović, L Davidson - 2005 - asmedigitalcollection.asme.org
Large eddy simulations (LES) were made of flows around a generic ground vehicle with
sharp edges at the rear end (an Ahmed body with a 25° angle of the rear slanted surface) …

High-order large-eddy simulation of flow over the “Ahmed body” car model

M Minguez, R Pasquetti, E Serre - Physics of fluids, 2008 - pubs.aip.org
The structure of the turbulent flow over a simplified automotive model, the Ahmed body (SR
Ahmed and G. Ramm, SAE Paper No. 8403001, 1984) with a 25 slanted back face, is …

[PDF][PDF] Fluid mechanics, turbulent flow and turbulence modeling

L Davidson - … University of Technology, Goteborg, Sweden (Nov …, 2018 - tfd.chalmers.se
This course material is used in two courses in the International Master's programme Applied
Mechanics at Chalmers. The two courses are TME226 Mechanics of fluids (Chapters 1-10 …

A low-dissipation finite element scheme for scale resolving simulations of turbulent flows

O Lehmkuhl, G Houzeaux, H Owen… - Journal of …, 2019 - Elsevier
The present work extends the conservative convective scheme proposed by Charnyi et
al.(2017)[13], originally formulated for mixed finite elements and tested in laminar flows, to …

Experimental characterization of the unsteady natural wake of the full-scale square back Ahmed body: flow bi-stability and spectral analysis

R Volpe, P Devinant, A Kourta - Experiments in Fluids, 2015 - Springer
In recent years, the increasing interest in reducing the aerodynamic drag of vehicles, such
as station wagons, minivans or buses, has led research to focus on the characterization of …