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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Large-eddy simulation of a bluff-body stabilized nonpremixed flame
TL;DR: In this paper, large-eddy simulations have been performed for a turbulent nonpremixed bluff-body stabilized CH4:H2 (50:50 vol.) flame at a Reynolds number of 15,800.
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Large Eddy Simulations of forced ignition of a non-premixed bluff-body methane flame with Conditional Moment Closure
TL;DR: In this paper, the authors investigated the feasibility of the use of CMC/LES for ignition problems and examined which, if any, of the characteristics already observed in related experiments could be predicted.
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Comparison of LES, RANS and experiments in an aeronautical gas turbine combustion chamber
TL;DR: In this paper, three specific aspects of such chambers are discussed: multiple inlets, multi-perforated plates and film cooling, and results are compared with predictions provided by Reynolds Averaged Navier-Stokes (RANS) simulations and experimental measurements.
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Large-eddy simulations of gas-turbine swirl injector flow dynamics
TL;DR: In this article, a comprehensive study on confined swirling flows in an operational gas-turbine injector was performed by means of large-eddy simulations, which was based on the Favre-filtered conservation equations and modified Smagorinsky treatment of subgrid-scale motions.
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Turbulence effects on cellular burning structures in lean premixed hydrogen flames
TL;DR: In this article, numerical simulations of lean hydrogen flames interacting with turbulence are performed in an idealized setting using an adaptive low Mach number model with a numerical feedback control algorithm to stabilize the flame.