Dynamics of swirling flames
In many continuous combustion processes, such as those found in aeroengines or gas
turbines, the flame is stabilized by a swirling flow formed by aerodynamic swirlers. The …
turbines, the flame is stabilized by a swirling flow formed by aerodynamic swirlers. The …
Aeroacoustic resonance and self-excitation in screeching and im**ing supersonic jets–a review
D Edgington-Mitchell - International Journal of Aeroacoustics, 2019 - journals.sagepub.com
Supersonic jets, particularly shock-containing jets, often exhibit high-intensity, discrete-
frequency acoustic tones. These tones are the signature of an aeroacoustic resonance loop …
frequency acoustic tones. These tones are the signature of an aeroacoustic resonance loop …
Spectral proper orthogonal decomposition
The identification of coherent structures from experimental or numerical data is an essential
task when conducting research in fluid dynamics. This typically involves the construction of …
task when conducting research in fluid dynamics. This typically involves the construction of …
The suitability of different swirl number definitions for describing swirl flows: Accurate, common and (over-) simplified formulations
Swirling flows are of considerable practical importance. They are used for example to
increase heat transfer in pipes or to stabilize flames at a distance from the injector unit by …
increase heat transfer in pipes or to stabilize flames at a distance from the injector unit by …
Review for order reduction based on proper orthogonal decomposition and outlooks of applications in mechanical systems
K Lu, Y **, Y Chen, Y Yang, L Hou, Z Zhang… - … Systems and Signal …, 2019 - Elsevier
This paper presents a review of proper orthogonal decomposition (POD) methods for order
reduction in a variety of research areas. The historical development and basic mathematical …
reduction in a variety of research areas. The historical development and basic mathematical …
Formation and flame-induced suppression of the precessing vortex core in a swirl combustor: experiments and linear stability analysis
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 …
swirling flows in gas turbine (GT) combustors. In some swirl combustors, it has been …
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 …
several high-performance, low-emissions combustion technologies, including gas turbines …
Upstream-travelling acoustic jet modes as a closure mechanism for screech
Experimental evidence is provided to demonstrate that the upstream-travelling waves in two
jets screeching in the A1 and A2 modes are not free-stream acoustic waves, but rather …
jets screeching in the A1 and A2 modes are not free-stream acoustic waves, but rather …
Recursive dynamic mode decomposition of transient and post-transient wake flows
A novel data-driven modal decomposition of fluid flow is proposed, comprising key features
of proper orthogonal decomposition (POD) and dynamic mode decomposition (DMD). The …
of proper orthogonal decomposition (POD) and dynamic mode decomposition (DMD). The …
Waves in screeching jets
The interaction between various wave-like structures in screeching jets is considered via
both experimental measurements and linear stability theory. Velocity snapshots of …
both experimental measurements and linear stability theory. Velocity snapshots of …