Understanding the role of flow dynamics in thermoacoustic combustion instability

J O'Connor - Proceedings of the Combustion Institute, 2023 - Elsevier
Thermoacoustic combustion instability is one of the most challenging operational issues in
several high-performance, low-emissions combustion technologies, including gas turbines …

Well-posed and ill-posed behaviour of the-rheology for granular flow

T Barker, DG Schaeffer, P Bohórquez… - Journal of Fluid …, 2015 - cambridge.org
In light of the successes of the Navier–Stokes equations in the study of fluid flows, similar
continuum treatment of granular materials is a long-standing ambition. This is due to their …

Mechanics of bluff body drag reduction during transient near-wake reversals

Y Haffner, J Borée, A Spohn… - Journal of Fluid …, 2020 - cambridge.org
A combination of passive and active methods is used to manipulate the symmetry of the
turbulent wake of an Ahmed body. Dedicated experiments to study the wake reversals …

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 …

[HTML][HTML] Instability and sensitivity analysis of flows using OpenFOAM®

Q Liu, F Gómez, JM Perez, V Theofilis - Chinese Journal of Aeronautics, 2016 - Elsevier
The present contributions deal with the development and implementation of the direct and
adjoint incompressible Navier–Stokes equations in a matrix-free time-stepping context …

Low-dimensional dynamics of a turbulent axisymmetric wake

G Rigas, AR Oxlade, AS Morgans… - Journal of Fluid …, 2014 - cambridge.org
The coherent structures of a turbulent wake generated behind a bluff three-dimensional
axisymmetric body are investigated experimentally at a diameter-based Reynolds number …

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 …

Experimental analysis of the effect of local base blowing on three-dimensional wake modes

M Lorite-Díez, JI Jiménez-González… - Journal of Fluid …, 2020 - cambridge.org
Wake modes of a three-dimensional blunt-based body near a wall are investigated at a
Reynolds number states in the horizontal (respectively vertical) direction, while bistable …

Diffusive dynamics and stochastic models of turbulent axisymmetric wakes

G Rigas, AS Morgans, RD Brackston… - Journal of Fluid …, 2015 - cambridge.org
A modelling methodology to reproduce the experimental measurements of a turbulent flow
in the presence of symmetry is presented. The flow is a three-dimensional wake generated …

Wake instability of a fixed axisymmetric bubble of realistic shape

JC Cano-Lozano, P Bohorquez… - International journal of …, 2013 - Elsevier
We analyze numerically the transition from straight to zigzag motion during the rising of a
single bubble in a still liquid. Results are reported for the regime in which the inner fluid …