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
An Experimental Study of the Near-Field Mixing Characteristics of a Swirling Jet
Ramis Örlü,P. Henrik Alfredsson +1 more
TL;DR: In this article, the mixing characteristics of a passive scalar in the near field region of a moderately swirling jet issuing from a fully developed axially rotating pipe flow were investigated by means of a combined X-wire and cold-wire probe.
Journal ArticleDOI
LES of recirculation and vortex breakdown in swirling flames
TL;DR: In this paper, a large eddy simulation (LES) technique has been applied to predict a selected swirling flame from the Sydney swirl burner experiments, known as the SM1 flame operated with fuel CH 4 at a swirl number of 0.5.
Journal ArticleDOI
Large eddy simulation of isothermal turbulent swirling jets
TL;DR: In this paper, the authors investigated the application of the large eddy simulation (LES) technique to turbulent isothermal swirling flows and examined the capability of LES to predict the formation of the vortex breakdown (VB) and recirculation zones.
Journal ArticleDOI
Central Recirculation Zone Visualization in Confined Swirl Combustors for Terrestrial Energy
TL;DR: In this paper, phase-locked particle image velocimetry is used to characterize the central recirculation zone formed under combustion conditions, with natural gas as fuel with different geometries and degrees of premixing using a swirl combustor firing into a confinement representative of gas turbine combustors.
Journal ArticleDOI
Analysis on the fluid flow in vortex tube with vortex periodical oscillation characteristics
TL;DR: In this article, a novel energy transferring mechanism in the vortex tube was proposed, under the condition that stable oscillation of the boundary layer is the dominant mechanism for the heat and mass transfer process.
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.