2020
DOI: 10.1017/jfm.2020.71
|View full text |Cite
|
Sign up to set email alerts
|

Salient three-dimensional features of the turbulent wake of a simplified square-back vehicle

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
4
1

Citation Types

8
46
0

Year Published

2020
2020
2024
2024

Publication Types

Select...
7

Relationship

0
7

Authors

Journals

citations
Cited by 42 publications
(54 citation statements)
references
References 41 publications
8
46
0
Order By: Relevance
“…The scenario partly builds on the mechanism proposed by Gerrard (1966) for the formation of the recirculation region behind two-dimensional (2-D) bluff bodies through flow entrainment by the surrounding shear layers. Although the present flow configuration is highly three-dimensional (3-D) (Pavia et al 2020), which cannot be completely neglected, the interaction of opposite shear layers is an important feature of this flow configuration. Grandemange et al (2013b) have shown the existence of global instabilities related to the interaction of opposite shear layers in the wake of the Ahmed body, similarly to the global instability in 2-D wakes but with the notable difference that these interactions are less strong.…”
Section: Discussion and Concluding Remarksmentioning
confidence: 99%
“…The scenario partly builds on the mechanism proposed by Gerrard (1966) for the formation of the recirculation region behind two-dimensional (2-D) bluff bodies through flow entrainment by the surrounding shear layers. Although the present flow configuration is highly three-dimensional (3-D) (Pavia et al 2020), which cannot be completely neglected, the interaction of opposite shear layers is an important feature of this flow configuration. Grandemange et al (2013b) have shown the existence of global instabilities related to the interaction of opposite shear layers in the wake of the Ahmed body, similarly to the global instability in 2-D wakes but with the notable difference that these interactions are less strong.…”
Section: Discussion and Concluding Remarksmentioning
confidence: 99%
“…The purpose of the present work is to elucidate the mechanism of the wake asymmetry behind notchback configurations with a specific focus on the random switch observed in the bi-stable wake. The bi-stable nature observed for the notchback body is fundamentally different from that for the squareback type (Grandemange et al 2012(Grandemange et al , 2013a(Grandemange et al , 2013bPavia et al 2020), due to the distinguishable shedding vortices from the slant and the flow reattachment to the deck. The results of this work help to explore the fluid mechanisms of the wake bi-stability behind a notchback bluff body with the interaction of the wake structures.…”
Section: Introductionmentioning
confidence: 74%
“…Moreover, although switches between two asymmetric mirrored states of wake bi-stability have been experimentally observed for squareback bluff bodies (Grandemange et al 2013a(Grandemange et al , 2013bVolpe et al 2015;Haffner et al 2020;Pavia et al 2020), the random switch in the notchback case has remained unexplained. It is worth noting that random switches between bi-stable wakes behind squareback Ahmed bodies were predicted by 926 A36-3 Östh et al (2014) andDalla Longa et al (2019) with the LES approach.…”
Section: Introductionmentioning
confidence: 99%
See 2 more Smart Citations