Front propagation into unstable states

W Van Saarloos - Physics reports, 2003 - Elsevier
This paper is an introductory review of the problem of front propagation into unstable states.
Our presentation is centered around the concept of the asymptotic linear spreading velocity …

Adjoint equations in stability analysis

P Luchini, A Bottaro - Annual Review of fluid mechanics, 2014 - annualreviews.org
The objective of this article is to review some developments in the use of adjoint equations in
hydrodynamic stability theory. Adjoint-based sensitivity analysis finds both analytical and …

Three-dimensional coherent structures in a swirling jet undergoing vortex breakdown: stability analysis and empirical mode construction

K Oberleithner, M Sieber, CN Nayeri… - Journal of fluid …, 2011 - cambridge.org
The spatio-temporal evolution of a turbulent swirling jet undergoing vortex breakdown has
been investigated. Experiments suggest the existence of a self-excited global mode having …

Global instabilities in spatially developing flows: non-normality and nonlinearity

JM Chomaz - Annu. Rev. Fluid Mech., 2005 - annualreviews.org
▪ Abstract The objective of this review is to critically assess the different approaches
developed in recent years to understand the dynamics of open flows such as mixing layers …

Formation and flame-induced suppression of the precessing vortex core in a swirl combustor: experiments and linear stability analysis

K Oberleithner, M Stöhr, SH Im, CM Arndt… - Combustion and …, 2015 - Elsevier
The precessing vortex core (PVC) is a coherent flow structure that is often encountered in
swirling flows in gas turbine (GT) combustors. In some swirl combustors, it has been …

Structural sensitivity of the first instability of the cylinder wake

F Giannetti, P Luchini - Journal of Fluid Mechanics, 2007 - cambridge.org
The stability properties of the flow past an infinitely long circular cylinder are studied in the
context of linear theory. An immersed-boundary technique is used to represent the cylinder …

Acoustic resonance in the potential core of subsonic jets

A Towne, AVG Cavalieri, P Jordan… - Journal of Fluid …, 2017 - cambridge.org
The purpose of this paper is to characterize and model waves that are observed within the
potential core of subsonic jets and relate them to previously observed tones in the near …

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 …

Sensitivity analysis and passive control of cylinder flow

O Marquet, D Sipp, L Jacquin - Journal of Fluid Mechanics, 2008 - cambridge.org
A general theoretical formalism is developed to assess how base-flow modifications may
alter the stability properties of flows studied in a global approach of linear stability theory. It …

Linear analysis of the cylinder wake mean flow

D Barkley - Europhysics Letters, 2006 - iopscience.iop.org
A highly accurate 2D linear stability analysis is performed on the mean flow of laminar vortex
shedding from a circular cylinder for Reynolds numbers between 46 and 180. Consistent …