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
Combustion Instability and Flame Structure of Turbulent Swirl-Stabilized Liquid-Fueled Combustion
Tongxun Yi,Domenic A. Santavicca +1 more
TL;DR: In this article, phase-locked intensified charge coupled device imaging of CH chemiluminescence shows that during combustion instability there aremainly variations in the chemilumininescence intensity rather than in the spatial distribution of heat release.
Journal ArticleDOI
Experimental analysis of thermo-acoustic instabilities in a generic gas turbine combustor by phase-correlated PIV, chemiluminescence, and laser Raman scattering measurements
Christoph M. Arndt,Michael Severin,Claudiu Dem,Michael Stöhr,Adam M. Steinberg,Wolfgang Meier +5 more
TL;DR: In this article, phase-dependent variations in the flame shape and relative heat release rate were determined by OH* chemiluminescence imaging; the flow velocities by stereoscopic particle image velocimetry (PIV); and the major species concentrations, mixture fraction, and temperature by laser Raman scattering.
Journal ArticleDOI
Swirling flow in a research combustor
Juan I. Ramos,H. T. Somer +1 more
TL;DR: In this article, a two-color laser Doppler velocimeter was used to measure turbulent, confined, swirling flows in a combustor and compared with other experimental data and numerical results obtained by means of two two-equation models of turbulence.
Journal ArticleDOI
The calculation of turbulent flow in wide-angle\diffusers
M.A. Habib,J. H. Whitelaw +1 more
TL;DR: In this article, a method of calculating the properties of axisymmetric swirling and nonswirling turbulent recirculating flows in wide-angle diffusers is described and appraised.
Journal ArticleDOI
Large-Eddy Simulation of the lean-premixed PRECCINSTA burner with wall heat loss
TL;DR: In this paper, a numerical strategy based on Large-Eddy Simulation (LES) and non-adiabatic boundary conditions with a skeletal chemistry approach coupled to the Dynamic Thickened Flame model (TFLES) is proposed.
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
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.