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
Transient numerical simulations of a cold-flow bidirectional vortex chamber
TL;DR: In this article , the authors report on detailed numerical studies based on detached eddy simulations (DESs) and unsteady Reynolds-averaged Navier-Stokes methods applied for two vortex chambers with different aspect ratios.
Journal ArticleDOI
Investigation of the Global Mode in Swirling Combustor Flows: Experimental Observations and Local and Global Stability Analysis☆
Steffen Terhaar,Pedro Paredes,Kilian Oberleithner,Vassilios Theofilis,Christian Oliver Paschereit +4 more
TL;DR: In this article, a new approach is presented to tackle self-excited helical flow oscillations in gas turbine combustors with stability concepts, based on the mean flow fields, local and global linear hydrodynamic stability analyses are carried out.
Journal ArticleDOI
Isothermal swirling flow characteristics and pressure drop analysis of a novel double swirl burner
TL;DR: In this article, the effect of mixing both the swirling flow of the inner jet (primary air or inner swirler) and the swirling flows of the annular jet (secondary air or outer swirlers) on the flow structure has been analyzed using Detached Eddy Simulation (DES) calculations and experimental measurements.
Proceedings ArticleDOI
Experimental Study of the Dynamics of a LPP injection System
TL;DR: In this paper, a laboratory-scale LPP gas turbine burner is investigated in terms of flame structure and mixing patterns, and a 320 kW swirl stabilized burner running at atmospheric pressure allows to study the transition to flashback of premixed flames.
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.