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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Soot formation and flame structure in swirl-stabilized turbulent non-premixed methane combustion
TL;DR: In this paper, the relationship between flow field, flame structure, and soot distribution were investigated experimentally in turbulent 4-kW non-premixed swirl flames of methane and air at three different air supply rates.
Journal ArticleDOI
Concentrated air and fire vortices: Physical modeling (a Review)
A. Y. Varaksin,A. Y. Varaksin +1 more
TL;DR: In this article, the main characteristics of stationary and nonstationary vortices, as well as free and confined air and fire Vortices are considered, and the experimental works devoted to studying the generation and dynamics of concentrated air, fire, and fire vortice are reviewed.
Journal ArticleDOI
Vortex Breakdown in a Swirl-Stabilized Combustor
TL;DR: In this paper, a swirl-stabilized combustor with a premixing fuel injector is used to measure the distribution of axial, radial, and circumferential velocity fields, from which the swirl ratio for a given swirler configuration is computed.
Journal ArticleDOI
The blue whirl: Boundary layer effects, temperature and OH* measurements
TL;DR: In this paper, it was shown that the water surface is not critical for a transition from a fire whirl to a blue whirl, but that the surface over which the whirl is formed must be flat without any obstructions to the incoming flow.
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The Three-Dimensional Structure of Swirl-Stabilized Flames in a Lean Premixed Multinozzle Can Combustor
TL;DR: In this paper, a chemiluminescence-based tomographic reconstruction technique is used to obtain three-dimensional images of the flame structure in a laboratory-scale five-nozzle can combustor.
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.