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
More filters
Journal ArticleDOI
Investigation of turbulent premixed methane/air and hydrogen-enriched methane/air flames in a laboratory-scale gas turbine model combustor
Xin Liu,Michael Bertsch,Arman Ahamed Subash,Senbin Yu,Robert-Zoltán Szász,Zhongshan Li,Per Petersson,Xue-Song Bai,Marcus Aldén,Daniel Lörstad +9 more
TL;DR: In this paper, the effects of equivalence ratio (Φ), Re, and H2 enrichment on flame structure were examined employing OH-PLIF measurement for CH4/air cases, the flame was stabilized with an M shape.
Journal ArticleDOI
Experimental analysis of biomass co-firing flames in a pulverized fuel swirl burner using a CCD based visualization system
TL;DR: In this article, the effects of biomass co-firing in the physical characteristics and oscillation patterns of the flame were analyzed by means of a digital imaging system installed in a 500kWth semi-industrial scale swirl burner.
Journal ArticleDOI
The Interaction of the Precessing Vortex Core and Reverse Flow Zone in the Exhaust of a Swirl Burner
TL;DR: In this article, the fundamental processes occurring in swirl burners are described and the phenomenon of the precessing vortex core has been characterized, which is known as precessed vortex core (PVC) phenomenon.
Journal ArticleDOI
Soot concentration and primary particle size in swirl-stabilized non-premixed turbulent flames of ethylene and air
TL;DR: In this paper, a gas turbine model combustor with optical access was investigated, and velocity and soot concentration fields were measured for three levels of air flow for a fixed flow rate of ethylene as the fuel.
Journal ArticleDOI
Aerodynamic characteristics and thermal structure of nonpremixed reacting swirling wakes at low Reynolds numbers
Rong Fung Huang,Shun C. Yen +1 more
TL;DR: In this paper, the aerodynamic characteristics and thermal structure of uncontrolled and controlled double-concentric jet flames at low Reynolds numbers were experimentally studied, where the swirl and Reynolds numbers are lower than 0.6 and 2000, respectively.
References
More filters
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.