Large Eddy Simulations of gaseous flames in gas turbine combustion chambers
TLDR
In this article, two types of LES in complex geometry combustors and of specific interest for aeronautical gas turbine burners are reviewed: (1) laboratory-scale combustors, without compressor or turbine, in which advanced measurements are possible and (2) combustion chambers of existing engines operated in realistic operating conditions.About:
This article is published in Progress in Energy and Combustion Science.The article was published on 2012-12-01 and is currently open access. It has received 396 citations till now. The article focuses on the topics: Combustion chamber & Combustor.read more
Citations
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Prediction and control of combustion instabilities in real engines
Thierry Poinsot,Thierry Poinsot +1 more
TL;DR: In this paper, the authors present recent progress in the field of thermoacoustic combustion instabilities in propulsion engines such as rockets or gas turbines, and show that LES is not sufficient and that theory, even in these complex systems, plays a major role to understand both experimental and LES results and to identify mitigation techniques.
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Dynamics of Swirling Flames
TL;DR: In this paper, a discussion of the swirl number, a parameter that plays a central role in the definition of the flow structure and its response to incoming disturbances, is presented, where the interaction between the swirler response and incoming acoustic perturbations generates a vorticity wave convected by the flow.
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Oxy-fuel combustion of pulverized fuels: Combustion fundamentals and modeling
Chungen Yin,Jinyue Yan +1 more
TL;DR: In this article, the authors present a state-of-the-art review and an in-depth discussion of pulverized fuels (PF) oxy-fuel combustion fundamentals and their modeling, which underpin the development of this promising technology.
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Large-eddy simulation: Past, present and the future
TL;DR: Large-eddy simulation (LES) was originally proposed for simulating atmospheric flows in the 1960s and has become one of the most promising and successful methodology for simulation of turbulent flows with the improvement of computing power as mentioned in this paper.
References
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Unsteady Flow Structures in Radial Swirler Fed Fuel Injectors
TL;DR: In this paper, an isothermal experimental study of a radial swirler fed fuel injector originally designed by Turbomeca is presented, and the dynamical behavior of the unsteady aerodynamic flow structures observed.
Proceedings ArticleDOI
Impact of Swirl Fluctuations on the Flame Response of a Perfectly Premixed Swirl Burner
Thomas Komarek,Wolfgang Polifke +1 more
TL;DR: In this article, a perfectly premixed, swirl stabilized burner with variable axial position of the swirl generator is investigated, and the effects of fluctuations of swirl number on heat release of the flame have been investigated in more detail.
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Dynamics of Practical Premixed Flames, Part I: Model Structure and Identification
A. Huber,Wolfgang Polifke +1 more
TL;DR: In this paper, a multiple-input, single-output (MISO) model structure for the flame is developed, where the integration with low-order or finite-element based models for stability analysis is straightforward.
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Flame Generation of Vorticity: Vortex Dipoles from Monopoles
Wm. T. Ashurst,Patrick McMurtry +1 more
TL;DR: In this article, the effects of both thermal expansion and vorticity generation via baroclinic torques are considered, and a simulation of premixed flame propagation through a two-dimensional volumetric distribution exhibits the coupling between combustion heat release and fluid dynamics.
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Strained laminar flamelet calculations of premixed turbulent combustion in a closed vessel
TL;DR: In this article, a new turbulent burning rate model for premixed combustion is described, which assumes that all chemical reaction takes place in thin laminar flamelets which are subjected to strain by the turbulent flow field.