A review of oscillation mechanisms and the role of the precessing vortex core (PVC) in swirl combustion systems

N Syred - Progress in Energy and Combustion Science, 2006 - Elsevier
This paper reviews the occurrence of the precessing vortex core (PVC) and other
instabilities, which occur in, swirl combustion systems whilst identifying mechanisms, which …

[图书][B] Unsteady combustor physics

TC Lieuwen - 2021 - books.google.com
Explore a unified treatment of the dynamics of combustor systems, including acoustics, fluid
mechanics, and combustion in a single rigorous text. This updated new edition features an …

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 …

Visualisation of isothermal large coherent structures in a swirl burner

A Valera-Medina, N Syred, A Griffiths - Combustion and Flame, 2009 - Elsevier
Lean premixed combustion using swirl flame stabilisation is widespread amongst gas
turbine manufacturers. The use of swirl mixing and flame stabilisation is also prevalent in …

Experimental study on flame/flow dynamics in a multi-nozzle gas turbine model combustor under thermo-acoustically unstable condition with different swirler …

C Ruan, F Chen, T Yu, W Cai, X Li, X Lu - Aerospace Science and …, 2020 - Elsevier
This paper presents an experimental study on the combustion stability characteristics and
flame/flow dynamics in a multi-nozzle, lean premixed prevaporized (LPP), swirl-stabilized …

Investigation of unsteady flow phenomena in first vane caused by combustor flow with swirl

S Jacobi, C Mazzoni, B Rosic… - Journal of …, 2017 - asmedigitalcollection.asme.org
The flow at the combustor turbine interface of power generation gas turbines with can
combustors is characterized by high and nonuniform turbulence levels, lengthscales, and …

Prognosis of combustion instability in a gas turbine combustor using spectral centroid & spread

S Joo, J Choi, MC Lee, N Kim - Energy, 2021 - Elsevier
Premixed gas turbine decreases exhaust emission but is vulnerable to combustion
instability. This paper proposes a new method for early detection of combustion instability …

An early detection indicator of combustion instability for an industrial gas turbine combustor

Y Fu, Y Zhang, P Zang, Y Sui, Y Zheng, Y Xia - Physics of Fluids, 2024 - pubs.aip.org
Detection of combustion instability is crucial for the safety and reliability of gas turbines. In
this paper, the recurrence quantification analysis (RQA) and multi-fractal analysis (MFA) …

Zero-crossing rate method as an efficient tool for combustion instability diagnosis

S Joo, J Choi, N Kim, MC Lee - Experimental Thermal and Fluid Science, 2021 - Elsevier
A novel methodology based on the zero-crossing rate (ZCR) is introduced to diagnose
combustion instability (CI) in a combustion system. This method can assess the combustion …

Experimental investigation of flame fluctuation reduction in distributed combustion

R Roy, AK Gupta - Experiments in Fluids, 2021 - Springer
Abstract Analysis of dynamic combustor stability is essential for the development of practical
devices that employ distributed reaction zones. The fluctuation of reaction zone (RZ) was …