Journal ArticleDOI
Combustion in swirling flows: A review
Nicholas Syred,János M. Beér +1 more
TLDR
The main effects of swirl are to improve flame stability as a result of the formation of toroidal recirculation zones and to reduce combustion lengths by producing high rates of entrainment of the ambient fluid and fast mixing as discussed by the authors.About:
This article is published in Combustion and Flame.The article was published on 1974-10-01. It has received 837 citations till now. The article focuses on the topics: Combustion chamber & Combustor.read more
Citations
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Journal ArticleDOI
Computations of recirculation zones of a confined annular swirling flow
TL;DR: In this article, a numerical investigation is presented to study the flow structures behind an axially mounted center-body of a confined annular swirling flow, based on the transient axisymmetric Navier-Stokes equations, the projection method is used to solve the pressure Poisson equation to retain the equation of continuity.
Journal ArticleDOI
Stability and Control of Lean Blowout in Chemical Kinetics-Controlled Combustion Systems
TL;DR: In this article, a third-order linear well-stirred reactor (WSR) model is derived to examine a combustor's responses to small deviations from equilibrium points or small external disturbances.
Journal ArticleDOI
Acoustically Induced Flashback in a Staged Swirl-Stabilized Combustor
Corentin Lapeyre,Marek Mazur,Philippe Scouflaire,Franck Richecoeur,Sébastien Ducruix,Thierry Poinsot +5 more
TL;DR: In this paper, the authors describe a joint experimental and numerical investigation of the interaction between thermoacoustics and flashback mechanisms in a swirled turbulent burner, where an academic air/propane combustor terminated by a choked nozzle is operated up to 2.5 bars.
Journal ArticleDOI
Large eddy simulation of unconfined turbulent swirling flow
TL;DR: In this article, large eddy simulations were performed to study the non-reacting flow fields of a Cambridge swirl burner, where the dynamic Smagorinsky eddy viscosity model was used as the sub-grid scale turbulence model.
Journal ArticleDOI
Flame investigations of a laboratory-scale CECOST swirl burner at atmospheric pressure conditions
Arman Ahamed Subash,Senbin Yu,Xin Liu,Michael Bertsch,Robert-Zoltán Szász,Zhongshan Li,Xue-Song Bai,Marcus Aldén,Daniel Lörstad +8 more
TL;DR: In this paper, a large eddy simulation (LES) was carried out for analysis of the vortex breakdown structures under non-reacting conditions, and the operability range, flame stabilization and flashback were investigated employing simultaneous OH and CH2O-PLIF, and high-speed chemiluminescence imaging.
References
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Journal ArticleDOI
Theory of the vortex breakdown phenomenon
TL;DR: In this paper, it is shown that vortex breakdown is not a manifestation of instability or of any other effect indicated by study of infinitesimal disturbances alone, but instead a finite transition between two dynamically conjugate states of axisymmetric flow, analogous to the hydraulic jump in open-channel flow.
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On stationary and travelling vortex breakdowns
TL;DR: In this article, the authors describe some experiments in swirling flows in a diverging cylindrical tube in which various types of vortex breakdowns were observed, viz. mild (double helix) breakdown, spiral breakdown, and axisymmetric breakdown.
The bursting of leading-edge vortices - some observations and discussion of the phenomenon.
N. C. Lambourne,D. W. Bryer +1 more
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Experimental Investigation of Swirling Vortex Motion in Jets
N. A. Chigier,A. Chervinsky +1 more
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Some observations of the vortex breakdown phenomenon
TL;DR: In this article, a cylindrical vortex, formed in a long tube, was used to study the "vortex breakdown" that has been previously reported in investigations of the flow over slender delta wings.