Transverse combustion instabilities: Acoustic, fluid mechanic, and flame processes
Thermoacoustic oscillations associated with transverse acoustic modes are routinely
encountered in combustion chambers. While a large literature on this topic exists for rockets …
encountered in combustion chambers. While a large literature on this topic exists for rockets …
Recirculation zone dynamics of a transversely excited swirl flow and flame
J O'Connor, T Lieuwen - Physics of fluids, 2012 - pubs.aip.org
This work investigates the response of the vortex breakdown region of a swirling, annular jet
to transverse acoustic excitation for both non-reacting and reacting flows. This swirling flow …
to transverse acoustic excitation for both non-reacting and reacting flows. This swirling flow …
A comparative study on acoustic damping induced by half-wave, quarter-wave, and Helmholtz resonators
CH Sohn, JH Park - Aerospace Science and Technology, 2011 - Elsevier
The damping characteristics of three-type resonators, a half-wave, a quarter-wave, and a
Helmholtz resonator are studied experimentally by adopting linear acoustic test. A …
Helmholtz resonator are studied experimentally by adopting linear acoustic test. A …
Effects of recess length on combustion instability in a model chamber with a gas-centered swirl coaxial injector
Combustion instability is investigated in a model chamber by changing the recess length of
a gas-centered swirl coaxial injector ranging from 0 mm to 20 mm with a 4 mm interval …
a gas-centered swirl coaxial injector ranging from 0 mm to 20 mm with a 4 mm interval …
Evaluation of the damping capacity according to the geometric and the number of resonator with thermal environment using a Rijke tube
S Jo, Y Choi, HJ Kim - Aerospace Science and Technology, 2019 - Elsevier
Combustion instabilities are often-observed phenomena which take place in acoustically
closed spaces such as combustion chambers in propulsion systems. These phenomena …
closed spaces such as combustion chambers in propulsion systems. These phenomena …
Further characterization of the disturbance field in a transversely excited swirl-stabilized flame
J O'Connor, T Lieuwen - 2012 - asmedigitalcollection.asme.org
This paper describes an analysis of the unsteady flow field in swirl flames subjected to
transverse acoustic waves. This work is motivated by transverse instabilities in annular gas …
transverse acoustic waves. This work is motivated by transverse instabilities in annular gas …
Examination of mode shapes in an unstable model combustor
JC Sisco, YC Yu, V Sankaran, WE Anderson - Journal of Sound and …, 2011 - Elsevier
The coupling between the fluid dynamics, heat addition, and the acoustics of a combustor
system determine whether it is prone toward combustion instability. This paper presents …
system determine whether it is prone toward combustion instability. This paper presents …
Finite element analysis for acoustic characteristics of combustion stabilization devices
The present study has proposed a numerical methodology based on harmonic analysis of
the convective Helmholtz equation to predict acoustic characteristics of combustion …
the convective Helmholtz equation to predict acoustic characteristics of combustion …
Nonlinear acoustic damping induced by a half-wave resonator in an acoustic chamber
IS Park, CH Sohn - Aerospace science and technology, 2010 - Elsevier
Nonlinear acoustic damping induced by a half-wave resonator is investigated numerically by
adopting nonlinear analysis. Governing equations describing nonlinear acoustic fields in a …
adopting nonlinear analysis. Governing equations describing nonlinear acoustic fields in a …
Combustion dynamics and stability of a fuel-rich gas generator
S Seo, SK Kim, HS Choi - Journal of Propulsion and Power, 2010 - arc.aiaa.org
A LIQUID rocket engine (LRE) requires a propellant supply system. Propellants can be
supplied by a turbopump or a propellant tank pressurized with inert gas. A turbopump …
supplied by a turbopump or a propellant tank pressurized with inert gas. A turbopump …