Asymmetries in Nominally Symmetric Flows

OJH Williams, AJ Smits - Annual Review of Fluid Mechanics, 2024 - annualreviews.org
Many flows that are expected to be symmetric are actually observed to be asymmetric. The
appearance of asymmetry in the face of no particular cause is a widespread although …

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 …

Effect of the free-stream turbulence on the bi-modal wake dynamics of square-back bluff body

G Chen, XB Li, K He, Z Cheng, D Zhou, XF Liang - Physics of Fluids, 2023 - pubs.aip.org
The effect of a free-stream turbulence intensity level on the wake dynamics of a square-back
Ahmed body is modeled using the improved delayed detached eddy simulation at Re= 9.6× …

Comparison of flow characteristics behind squareback bluff-bodies with and without wheels

X Su, K He, K Xu, G Gao, S Krajnović - Physics of Fluids, 2023 - pubs.aip.org
The wake dynamics of two referenced variations of the squareback Windsor model with and
without wheels is numerically studied by performing improved delayed detached eddy …

Effects of approach flow conditions on the unsteady three-dimensional wake structure of a square-back Ahmed body

N Kang, EE Essel, V Roussinova, R Balachandar - Physical Review Fluids, 2021 - APS
This paper investigates the effects of approach flow conditions on the unsteady three-
dimensional wake characteristics of a square-back Ahmed body using improved delayed …

Nonlinear feedback control of bimodality in the wake of a three-dimensional bluff body

D Ahmed, AS Morgans - Physical Review Fluids, 2022 - APS
The turbulent wake behind a square-back Ahmed body in close proximity to the ground
exhibits bimodal switching. This manifests as the center of the wake switching between one …

Floor motion's influence on wake asymmetry of a notchback bluff body

K He, G Minelli, X Su, J Wang, G Gao, S Krajnović - Physics of Fluids, 2022 - pubs.aip.org
Large eddy simulations are used to explore the influence of floor motions on asymmetric
flows around a notchback bluff body. The focus of this study is on the aerodynamic forces …

Oblique and parallel modes of the bistable bluff body wake

SS Panesar, H Xia, M Passmore - Physical Review Fluids, 2023 - APS
Turbulent bluff body flows exhibit large-scale, low frequency dynamics associated with
symmetry breaking in the wake which compromise stability and increase surface pressure …

On the reliability of aerodynamic balance time-series for closed-loop flow control

M Lippert, J Basley, L Keirsbulck - Measurement, 2022 - Elsevier
The feasibility and applicability of instantaneous load cell measurements are characterised
for the monitoring of the dynamic state of the flow around a bluff body. The present study …

Effect of approach flow condition on the wake of an Ahmed body

N Kang - 2021 - search.proquest.com
This thesis investigates the effects of approach flow conditions on the unsteady three-
dimensional (3D) wake characteristics of a square back Ahmed body using improved …