Mixed acoustic–entropy combustion instabilities in gas turbines

E Motheau, F Nicoud, T Poinsot - Journal of Fluid Mechanics, 2014 - cambridge.org
A combustion instability in a combustor terminated by a nozzle is analysed and modelled
based on a low-order Helmholtz solver. A large eddy simulation (LES) of the corresponding …

Highly resolved numerical simulation of combustion in supersonic hydrogen–air coflowing jets

Y Moule, V Sabelnikov, A Mura - Combustion and Flame, 2014 - Elsevier
The present study is focused on the analysis of non-premixed combustion in high-velocity
(supersonic) flows. The computations make use of a large eddy simulation (LES) model …

[HTML][HTML] Solid rocket motor internal ballistics using an enhanced surface-vorticity panel technique

GA DiMaggio, RJ Hartfield, J Majdalani, V Ahuja - Physics of Fluids, 2021 - pubs.aip.org
This work explores the use of surface-mesh flow solvers to model solid rocket internal
ballistics with arbitrary grain geometry. Specifically, a surface-vorticity approach, originally …

Wall roughness effects on combustion development in confined supersonic flow

G Pelletier, M Ferrier, A Vincent-Randonnier… - Journal of Propulsion …, 2021 - arc.aiaa.org
Reactive and nonreactive Reynolds-averaged Navier–Stokes simulations of hydrogen
injection into a confined transverse supersonic flow of vitiated air are conducted. The …

Computational fluid dynamics investigation of a Mach 12 scramjet engine

Y Moule, V Sabel'nikov, A Mura, M Smart - Journal of Propulsion and …, 2014 - arc.aiaa.org
The description of combustion in high-speed turbulent flows, where turbulent mixing,
compressibility effects, and chemical kinetics processes are competing, still remains a …

Nonlinear characteristics of the triggering combustion instabilities in solid rocket motors

Z Wang, P Liu, B Jin, W Ao - Acta Astronautica, 2020 - Elsevier
The triggering combustion instability in the solid rocket motor is investigated from a
nonlinear dynamical system perspective. A coupling model taking both the nonlinear …

[HTML][HTML] On the compressible biglobal stability of the mean flow motion in porous tubes

J Majdalani, T Ramesh Kumar, M Akiki - Physics of Fluids, 2021 - pubs.aip.org
In this work, a compressible biglobal stability approach is used to investigate the growth
characteristics of hydrodynamic and vorticoacoustic waves in porous tubes with uniform wall …

Stability and sensitivity analysis in a simplified solid rocket motor flow

G Boyer, G Casalis, JL Estivalèzes - Journal of Fluid Mechanics, 2013 - cambridge.org
The present article aims at enhancing the computation of the global stability modes of the
internal flow of solid rocket motors (SRMs) approximated by the Taylor–Culick solution. This …

[HTML][HTML] On the compressible biglobal stability of the mean flow motion in porous channels

M Akiki, J Majdalani - Physics of Fluids, 2022 - pubs.aip.org
This work relies on a compressible biglobal stability approach to describe the wave
dynamics in a planar rocket chamber modeled as a porous channel. At first, the …

A model for solid propellant burning fluctuations using mesoscale simulations

S Gallier, M Plaud - Acta Astronautica, 2019 - Elsevier
The combustion of composite solid propellants shows velocity fluctuations which are
expected to have marked effects on turbulence or aeroacoustic instabilities. In this work, we …