Assessment of LES, IDDES and RANS approaches for prediction of wakes behind notchback road vehicles

K He, G Minelli, J Wang, G Gao, S Krajnović - Journal of Wind Engineering …, 2021 - Elsevier
Abstract The capability of Large Eddy Simulations (LES), Improved Delayed Detached Eddy
Simulations (IDDES) and Reynolds-Averaged Navier–Stokes Equations (RANS) to predict …

Experimental investigation of flow-induced vibration of a rotating circular cylinder

KWL Wong, J Zhao, DL Jacono… - Journal of Fluid …, 2017 - cambridge.org
While flow-induced vibration of bluff bodies has been extensively studied over the last half-
century, only limited attention has been given to flow-induced vibration of elastically …

An investigation on the switching of asymmetric wake flow and the bi-stable flow states of a simplified heavy vehicle

J Zhang, F Wang, S Han, T Huang, G Gao… - … of Computational Fluid …, 2022 - Taylor & Francis
This study investigates the effect of aspect ratios (Ra*) on the wake bi-stability behind the
GTS model using improved delayed-detached eddy simulation (IDDES) at a Reynolds …

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 …

Characteristics of flow past elongated bluff bodies with underbody gaps due to varying inflow turbulence

SS Aleyasin, MF Tachie, R Balachandar - Physics of Fluids, 2021 - pubs.aip.org
An experimental study was performed on two elongated bluff bodies with underbody gaps, a
square-back Ahmed body and a cuboid, to investigate the effects of geometry and the …

Investigation of the wake flow of a simplified heavy vehicle with different aspect ratios

J Zhang, F Wang, Z Guo, S Han, G Gao, J Wang - Physics of Fluids, 2022 - pubs.aip.org
This study numerically investigates the effects of aspect ratios on the wake flow of a
simplified ground transportation system (GTS) model using improved delayed detached …

Experimental investigation of the flow features around an elliptical Ahmed body

NA Siddiqui, M Agelin-Chaab - Physics of Fluids, 2022 - pubs.aip.org
The standard Ahmed body (SAB) with a rectangular rear end is a simplified, canonical bluff
body geometry that shares similarities with generic road vehicles. It is known to produce flow …

Numerical investigation on aerodynamic performance and stability of a sedan under wind–bridge–tunnel road condition

Q Zhang, C Su, Y Wang - Alexandria Engineering Journal, 2020 - Elsevier
Given the complexity of the wind environment around bridge–tunnel sections in canyons,
flow fields are complex and changeable, resulting in transient aerodynamic loads on …

Effect of aspect ratio on the near-wake flow structure of an Ahmed body

M Corallo, J Sheridan, MC Thompson - Journal of Wind Engineering and …, 2015 - Elsevier
Through numerical simulations, the interaction between the longitudinal c-pillar vortices and
the flow over the rear slant surface is established for an Ahmed-body geometry as its aspect …

Influence of afterbody rounding on the pressure distribution over a fastback vehicle

G Rossitto, C Sicot, V Ferrand, J Borée… - Experiments in Fluids, 2016 - Springer
Experimental analyzes were performed to understand the drag evolution and the flow field
modifications resulting from afterbody rounding on the Ahmed body, a simplified vehicle …