Assessment of RANS and DES methods for realistic automotive models

N Ashton, A West, S Lardeau, A Revell - Computers & fluids, 2016 - Elsevier
This paper presents a comprehensive investigation of RANS and DES models for the
Ahmed car body and a realistic automotive vehicle; the DrivAer model. A variety of RANS …

Drag and lift reduction of a 3D bluff body using flaps

JF Beaudoin, JL Aider - Experiments in fluids, 2008 - Springer
We present an experimental study on flow control over a classic 3D bluff-body used in
automotive aerodynamics (Ahmed 1983). Flow control is achieved through moving flaps …

Unsteady flow simulation of the Ahmed reference body using a lattice Boltzmann approach

E Fares - Computers & fluids, 2006 - Elsevier
The Ahmed reference body represents a simplified car geometry that can be used to
investigate the main flow features in the wake of vehicles. The present work presents …

[HTML][HTML] Turbulence modeling effects on the CFD predictions of flow over a detailed full-scale sedan vehicle

C Zhang, CP Bounds, L Foster, M Uddin - Fluids, 2019 - mdpi.com
In today's road vehicle design processes, Computational Fluid Dynamics (CFD) has
emerged as one of the major investigative tools for aerodynamics analyses. The age-old …

Effects of rear slant angles on the flow characteristics of Ahmed body

T Tunay, B Sahin, V Ozbolat - Experimental Thermal and Fluid Science, 2014 - Elsevier
Ahmed body is a simplified vehicle model which retains important features of real ground
vehicles. Present study aims to investigate effects of rear slant angles (α= 25°, 30° and 35°) …

Bluff-body drag reduction using a deflector

G Fourrié, L Keirsbulck, L Labraga, P Gilliéron - Experiments in Fluids, 2011 - Springer
A passive flow control on a generic car model was experimentally studied. This control
consists of a deflector placed on the upper edge of the model rear window. The study was …

On the two flow states in the wake of a hatchback Ahmed body

A Rao, G Minelli, B Basara, S Krajnović - Journal of Wind Engineering and …, 2018 - Elsevier
Recent experimental investigations in the wake of an idealised car model–the Ahmed body
showed the existence of two stable wake states: flow state I, where the flow is fully separated …

Aerodynamic performance of several passive vortex generator configurations on an Ahmed body subjected to yaw angles

H Viswanathan - Journal of the Brazilian Society of Mechanical Sciences …, 2021 - Springer
We evaluate the aerodynamic performance of several passive vortex generators (VGs)
placed on a standard Ahmed body, with a slant angle (α= 35º), subjected to different yawing …

Numerical and experimental investigation on vehicles in platoon

P Schito - SAE International Journal of Commercial Vehicles, 2012 - sae.org
Many studies have been carried out to optimize the aerodynamic performances of a single
car or a single vehicle. In present days the traffic increases and sophisticated technologies …

Comparison of RANS and DES methods for the DrivAer automotive body

N Ashton, A Revell - 2015 - sae.org
Computational Fluid Dynamics (CFD) is now one of the most important design tools for the
automotive industry. Reliable CFD simulations of the complex separated turbulent flow …