Rotating detonation combustors and their similarities to rocket instabilities
Rotating detonation combustors (RDC) are at the forefront of pressure gain combustion
(PGC) research, utilizing one or more azimuthally spinning detonation waves, an intrinsically …
(PGC) research, utilizing one or more azimuthally spinning detonation waves, an intrinsically …
[HTML][HTML] Predicting thermoacoustic stability characteristics of longitudinal combustors using different endpoint conditions with a low Mach number flow
Combustion instability frequently occurs in propulsion and power generation systems. It is
characterized by large-amplitude acoustic oscillations leading to undesirable …
characterized by large-amplitude acoustic oscillations leading to undesirable …
Coupled interaction between acoustics and unsteady flame dynamics during the transition to thermoacoustic instability in a multi-element rocket combustor
Rocket engine combustors are prone to transverse instabilities that are characterized by
large amplitude high frequency oscillations in the acoustic pressure and the heat release …
large amplitude high frequency oscillations in the acoustic pressure and the heat release …
Numerical analysis on combustion instabilities in end-burning-grain solid rocket motors utilizing pressure-coupled response functions
S Ji, B Wang, D Zhao - Aerospace Science and Technology, 2020 - Elsevier
The combustion instability has been one of severe problems suffered by solid rocket motors
(SRMs) for a long term. This paper proposes a burning rate model utilizing the pressure …
(SRMs) for a long term. This paper proposes a burning rate model utilizing the pressure …
[HTML][HTML] Dynamical systems approach to study thermoacoustic transitions in a liquid rocket combustor
Liquid rockets are prone to large amplitude oscillations, commonly referred to as
thermoacoustic instability. This phenomenon causes unavoidable developmental setbacks …
thermoacoustic instability. This phenomenon causes unavoidable developmental setbacks …
A Continuous Detonation Phenomenon: Shuttling Transverse Combustion
X Huang, PH Chang, JM Li, HK Ngiam, R Shan… - AIAA SciTech 2022 …, 2022 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2022-1457. vid A novel continuous
detonation phenomenon, named shuttling transverse combustion (STC), has been …
detonation phenomenon, named shuttling transverse combustion (STC), has been …
Nonlinear time-series analysis of thermoacoustic oscillations in a solid rocket motor
Recent applications of nonlinear time-series analysis have shown that thermoacoustic
systems can exhibit self-excited behavior more complex than simple period-1 oscillations …
systems can exhibit self-excited behavior more complex than simple period-1 oscillations …
[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 …
ballistics with arbitrary grain geometry. Specifically, a surface-vorticity approach, originally …
Non-normality and nonlinearity in thermoacoustic instabilities
RI Sujith, MP Juniper… - International Journal of …, 2016 - journals.sagepub.com
Analysis of thermoacoustic instabilities were dominated by modal (eigenvalue) analysis for
many decades. Recent progress in nonmodal stability analysis allows us to study the …
many decades. Recent progress in nonmodal stability analysis allows us to study the …
Hopf bifurcation analysis of the combustion instability in a liquid rocket engine
X Liang, L Yang, G Wang, J Li - Aerospace, 2022 - mdpi.com
The bifurcation process of self-sustained combustion instability pressure perturbations in a
liquid rocket combustor is investigated based on the Helmholtz equations and a pressure …
liquid rocket combustor is investigated based on the Helmholtz equations and a pressure …