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
Control of the Development of Swirling Airflow Dynamics and Its Impact on Biomass Combustion Characteristics
TL;DR: In this paper, the development of the swirling flame flow field and gasification/ combustion dynamics at thermo-chemical conversion of biomass pellets has been studied using a pilot device, which combines a biomass gasifier and combustor by varying the inlet conditions of the fuel-air mixture into the combustor.
Book ChapterDOI
Turbulent Two-Dimensional Shear Flows
TL;DR: Free turbulent shear flows as discussed by the authors are regions in which there is one single predominant direction, the streamwise direction, while the shear stresses and diffusion fluxes are significant in the direction perpendicular to it.
Journal ArticleDOI
Numerical and Experimental Assessment of a Novel Multinozzle Burner with CO2 Diluent to Improve the Emissions from a Swirling Flame in a Combustion Chamber
TL;DR: In this paper, a new burner is designed in order to be applied in a test furnace, and the effects on a CH/air swirling turbulent flame while mixing CO₂ with CH₄ as the fuel.
Journal ArticleDOI
An experimental study of the under-expanded swirling jet with secondary coaxial stream
TL;DR: In this article, experimental results for investigating the details of the near field flow characteristics produced in an underexpanded, dual, coaxial, swirling jet are investigated. And the effect of the outer secondary stream on the major structures of the inner primary swirling jet is strongly dependent on the pressure ratio of the Inner swirling jet, regardless of the swirl direction of an outer stream.
Proceedings ArticleDOI
Effects of Chemical Kinetics and Heat Loss on Near-LBO Combustion Dynamics - Stability Analysis
Tongxun Yi,Ephraim Gutmark +1 more
TL;DR: In this article, the effects of chemical kinetics and heat loss on near-LBO (lean blowout) combustion dynamics were examined using both linearized and nonlinear WSR (well-stirred-reactor) models.
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.