From thin plates to Ahmed bodies: linear and weakly nonlinear stability of rectangular prisms

We study the stability of laminar wakes past three-dimensional rectangular prisms. The width-to-height ratio is set to $W/H=1.2$, while the length-to-height ratio $1/6< L/H

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Bibliographic Details
Published in:Journal of fluid mechanics 2023-06, Vol.966, Article A19
Main Authors: Zampogna, Giuseppe A., Boujo, Edouard
Format: Article
Language:English
Subjects:
Direct numerical simulation
Fluid flow
Geometry
Height
Hopf bifurcation
JFM Papers
Laminar wakes
Modes
Nonlinear analysis
Prisms
Ratios
Reynolds number
Robustness (mathematics)
Stability
Stability analysis
Symmetry
Thin plates
Vortices
Wakes
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Description
Summary:We study the stability of laminar wakes past three-dimensional rectangular prisms. The width-to-height ratio is set to $W/H=1.2$, while the length-to-height ratio $1/6< L/H
ISSN:0022-1120
1469-7645
DOI:10.1017/jfm.2023.426