Fluid force and symmetry breaking modes of a 3D bluff body with a base cavity

A Evrard, O Cadot, V Herbert, D Ricot… - Journal of Fluids and …, 2016 - Elsevier
A cavity at the base of the squareback Ahmed model at Re≃ 4× 10 5 is able to reduce the
base suction by 18% and the drag coefficient by 9%, while the flow at the separation …

A numerical investigation of the asymmetric wake mode of a squareback Ahmed body–effect of a base cavity

JM Lucas, O Cadot, V Herbert, S Parpais… - Journal of Fluid …, 2017 - cambridge.org
Numerical simulations of the turbulent flow over the flat backed Ahmed model at Reynolds
number is obtained. It is accompanied by a large elongation of the recirculation inside the …

Drag reduction on a three-dimensional blunt body with different rear cavities under cross-wind conditions

M Lorite-Díez, JI Jiménez-González, L Pastur… - Journal of Wind …, 2020 - Elsevier
The use of rear cavities at the base of a square-back Ahmed body has been experimentally
evaluated as a passive control device under cross-wind conditions with yaw angles β≤ 10° …

[HTML][HTML] Drag reduction on a blunt body by self-adaption of rear flexibly hinged flaps

C García-Baena, JM Camacho-Sánchez… - Journal of Fluids and …, 2023 - Elsevier
We study the aerodynamics of a blunt-based body with rear flexibly-hinged rigid flaps,
subject to a turbulent flow of Reynolds number R e= 12000, under aligned and cross flow …

Dynamics of an oscillating turbulent jet in a confined cavity

BW Righolt, S Kenjereš, R Kalter, MJ Tummers… - Physics of …, 2015 - pubs.aip.org
We demonstrate how the self-sustained oscillation of a confined jet in a thin cavity can be
quantitatively described by a zero-dimensional model of the delay differential equation type …

Numerical analysis of the flow-induced vibrations in the laminar wake behind a blunt body with rear flexible cavities

C García-Baena, JI Jiménez-González… - Journal of Fluids and …, 2021 - Elsevier
We present a numerical study on the fluid–structure interaction of an incompressible laminar
flow around a slender blunt-based body implementing a rear cavity of flexible plates. The …

Investigation on the effect of horizontal and vertical deflectors on the near-wake of a square-back car model

A Capone, GP Romano - Journal of Wind Engineering and Industrial …, 2019 - Elsevier
The near-wake flow field downstream of a square-back car model is analyzed to investigate
on the combined effect of horizontal and vertical deflectors. Aerodynamic coefficients and …

Modified near-wakes of axisymmetric cylinders with slanted base

DS Bulathsinghala, Z Wang, I Gursul - Aerospace Science and Technology, 2019 - Elsevier
Near-wakes of axisymmetric cylinders with slanted base were investigated in wind tunnel
experiments for an upsweep angle of 28°. Effects of splitter-plate, cavity, and flaps on the …

Numerical investigation of flow around a 3D bluff body using deflector plate

A Raina, GA Harmain, MIU Haq - International Journal of Mechanical …, 2017 - Elsevier
This paper presents a numerical study of drag reduction technique using passive flow
device around a realistic car model. The model used in this investigation is Ahmed body, at …

Grooved cavity as a passive controller behind backward facing step

SA Khan, AA AlRobaian, M Asadullah… - Journal of Advanced …, 2019 - semarakilmu.com.my
A semicircular grooved cavity is designed for controlling the base pressure and hence the
base drag in case of a backward facing step. This paper presents the effect of the continuous …