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
Velocity and temperature fields in the combustion of rotating gas in a closed vessel
TL;DR: In this article, the authors investigated the thermodynamic and gas dynamic features of a rotational flow in a closed vessel and showed that additional forces such as inertial and Coriolis appear, leading to significant rearrangement of the flow and the appearance of an angular velocity distribution over the vessel radius.
Journal ArticleDOI
Towards utilization of iron powders for heating and power
Mohammad T. Baigmohammadi,Willie Prasidha,Nicole C. Stevens,Yuri L. Shoshyn,Tim Spee,Philip de Goey +5 more
TL;DR: In this paper , a self-sustained iron flame can be established inside the MC2 under normal air conditions, and even at very low oxygen concentrations (∼ 10% O2) and for low overall equivalence ratios ( ∼ 0.2), without any assisting extra heat sources.
Proceedings ArticleDOI
Realizable Unied RANS-LES and Dynamic LES Methods for Turbulent Flow Simulations
TL;DR: The theoretical background of the novel dynamic and uni ed LES methods based on stochastic analysis are explained and applications to several ows reveal the signi cant advantages of these methods in comparison to usually applied L ES methods.
Proceedings ArticleDOI
Effect of swirl on axisymmetric sudden expansion flow
K.M. Isaac,C.K. Wu +1 more
TL;DR: In this paper, a numerical simulation of strongly swirling axisymmetric flowfield in a sudden expansion geometry has been conducted and the standard k-e model for turbulence with the use of wall functions near solid boundaries has been used for turbulence closure.
Cold gas analysis of a waste-gas incinerator to enhance mixing capabilities using CFD
TL;DR: In this paper, Wang et al. studied the mixing characteristics of one available incinerator with some unsuitable pollution using the CFD simulation and analyzed the mixing quality to monitor the influence of waste-gas inlet crosssections and its position into the incinerator chamber.
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.