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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Book ChapterDOI
Coherent Structures in the Near Field of Swirling Turbulent Jets and Flames Investigated by PIV and PLIF
TL;DR: In this article, the results of the experimental study of coherent flow structures in turbulent jets with different swirl rates are reported, where the focus is placed on analysis of their impact on mixing of a passive scalar in the jets and on regular flame front deformations during combustion of fuel-lean and fuel-rich methane/air mixtures in case of a strongly swirling jet with vortex breakdown.
Journal ArticleDOI
A Multi Fuelled Cyclone Combustor
TL;DR: In this paper, a prototype 1.5 MW vertical cyclone combustor with integral ash removal is presented, which removes in excess of 80% of the ash in the combustion process.
Experimetelle Charakterisierung der Instabilitäten vorgemischter Flammen in Gasturbinen-Brennkammern
Book ChapterDOI
LDV Measurements of Confined Vortex Breakdown Generated by a Rotating Cone
TL;DR: In this article, the three-dimensional velocity flowfield in the confined swirling flow generated by a rotating cone was measured and the corresponding Reynolds numbers were Re = 2200 and 2570, with values of the gap ratio H/R = 2 and 3.
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.
Journal ArticleDOI
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
Journal ArticleDOI
Experimental Investigation of Swirling Vortex Motion in Jets
N. A. Chigier,A. Chervinsky +1 more
Journal ArticleDOI
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.