Adjoint methods as design tools in thermoacoustics

L Magri - Applied Mechanics Reviews, 2019 - asmedigitalcollection.asme.org
In a thermoacoustic system, such as a flame in a combustor, heat release oscillations couple
with acoustic pressure oscillations. If the heat release is sufficiently in phase with the …

Lift forces on solid spherical particles in unbounded flows

P Shi, R Rzehak - Chemical Engineering Science, 2019 - Elsevier
The present work is concerned with the lift forces acting on particles immersed in an
unbounded fluid. Both mechanisms due to rotation of the particle and vorticity of the fluid …

Efficient stabilization and acceleration of numerical simulation of fluid flows by residual recombination

V Citro, P Luchini, F Giannetti, F Auteri - Journal of Computational Physics, 2017 - Elsevier
The study of the stability of a dynamical system described by a set of partial differential
equations (PDEs) requires the computation of unstable states as the control parameter …

Bifurcation scenario in the two-dimensional laminar flow past a rotating cylinder

J Sierra, D Fabre, V Citro, F Giannetti - Journal of Fluid Mechanics, 2020 - cambridge.org
The aim of this paper is to provide a complete description of the bifurcation scenario of a
uniform flow past a rotating circular cylinder up to. Linear stability theory is used to depict the …

Numerical analyses of the flow past a short rotating cylinder

Y Yang, C Wang, R Guo, M Zhang - Journal of Fluid Mechanics, 2023 - cambridge.org
This work studies the three-dimensional flow dynamics around a rotating circular cylinder of
finite length, whose axis is positioned perpendicular to the streamwise direction. Direct …

Unveiling the competitive role of global modes in the pattern formation of rotating sphere flows

J Sierra-Ausín, M Lorite-Díez… - Journal of Fluid …, 2022 - cambridge.org
The wake flow past a streamwise rotating sphere is a canonical model of numerous
applications, such as particle-driven flows, sport aerodynamics and freely rising or falling …

Lift force on a spherical droplet in a viscous linear shear flow

P Shi, É Climent, D Legendre - Journal of Fluid Mechanics, 2024 - cambridge.org
Lift force on a spherical droplet in a viscous linear shear flow Page 1 J. Fluid Mech. (2024), vol.
1000, A88, doi:10.1017/jfm.2024.1072 Lift force on a spherical droplet in a viscous linear shear …

Drag and lift forces on a rigid sphere immersed in a wall-bounded linear shear flow

P Shi, R Rzehak, D Lucas, J Magnaudet - Physical Review Fluids, 2021 - APS
We report on a series of fully resolved simulations of the flow around a rigid sphere
translating steadily near a wall, either in a fluid at rest or in the presence of a uniform shear …

[HTML][HTML] Convergence enhancement of SIMPLE-like steady-state RANS solvers applied to airfoil and cylinder flows

A Dicholkar, F Zahle, NN Sørensen - Journal of Wind Engineering and …, 2022 - Elsevier
Abstract Iterative steady Reynolds-averaged Navier–Stokes (RANS) solvers are widely used
to obtain polars representing the aerodynamic characteristics of airfoils. Unsteadiness is …

Permeability sets the linear path instability of buoyancy-driven disks

G Vagnoli, GA Zampogna, S Camarri… - Journal of Fluid …, 2023 - cambridge.org
The prediction of trajectories of buoyancy-driven objects immersed in a viscous fluid is a key
problem in fluid dynamics. Simple-shaped objects, such as disks, present a great variety of …