Influence of flame stabilization and fuel injection modes on the flow and combustion characteristics of gas turbine combustor with cavity

Zhang, Rongchun; Bai, Ning; Fan, Weijun; Huang, Xiaoli; Fan, Xiaolei

doi:10.1016/j.energy.2019.116216

Cited by 19 publications

(4 citation statements)

References 21 publications

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“…As reported by Mishra in [15], the technology can achieve from 10 to 40% of NOx emission reduction due to the high inlet velocity for the vortex, which reduces the combustion temperature and improves flame stabilization [16]. The trapped turbulent vortex also provides some significant pressure drop reduction, as reported by Zhang in [17]. The TVC combustor with the most flexibility in fuel operation and application using biofuel is investigated in [18].…”

Section: Trapped Vortex and Mild Combustionmentioning

confidence: 97%

Dry-Low Emission Gas Turbine Technology: Recent Trends and Challenges

et al. 2022

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Dry-low emission (DLE) is one of the cleanest combustion types used in a gas turbine. DLE gas turbines have become popular due to their ability to reduce emissions by operating in lean-burn operation. However, this technology leads to challenges that sometimes interrupt regular operations. Therefore, this paper extensively reviews the development of the DLE gas turbine and its challenges. Numerous online publications from various databases, including IEEE Xplore, Scopus, and Web of Science, are compiled to describe the evolution of gas turbine technology based on emissions, fuel flexibility, and drawbacks. Various gas turbine models, including physical and black box models, are further discussed in detail. Working principles, fuel staging mechanisms, and advantages of DLE gas turbines followed by common faults that lead to gas turbine tripping are specifically discussed. A detailed evaluation of lean blow-out (LBO) as the major fault is subsequently highlighted, followed by the current methods in LBO prediction. The literature confirms that the DLE gas turbine has the most profitable features against other clean combustion methods. Simulation using Rowen’s model significantly imitates the actual behavior of the DLE gas turbine that can be used to develop a control strategy to maintain combustion stability. Lastly, the data-driven LBO prediction method helps minimize the flame’s probability of a blow-out.

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Section: Trapped Vortex and Mild Combustionmentioning

confidence: 97%

Dry-Low Emission Gas Turbine Technology: Recent Trends and Challenges

et al. 2022

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“…When fuel is injected separately in the cavity, it affects vortex structure and strength which results in performance variations. Fuel injection mode was investigated (Zhang et al , 2019a) and Zhu et al (2019) for investigating the interaction between fuel injected and vortex flow inside the cavity. The flow structures with respect to different combinations of injection location height from bottom of cavity and injection angle were investigated and found to be varying between broken and closed vortex structures (Jin et al , 2014a).…”

Section: Computational Studies On Trapped Vortex Combustorsmentioning

confidence: 99%

“…The flow structures with respect to different combinations of injection location height from bottom of cavity and injection angle were investigated and found to be varying between broken and closed vortex structures (Jin et al , 2014a). Further studies focused on blow out characteristics of TVC (Xing et al , 2012) and also on TVC operated as a RQLcombustor (Jiang et al , 2015) and UCC (Zhang et al , 2019a). The numerical studies were compared with Lefebvre’s empirical correlation and experimental data.…”

Section: Computational Studies On Trapped Vortex Combustorsmentioning

confidence: 99%

A review of computational studies on trapped vortex combustors for gas turbine applications

Narayanan

K.M.²

2022

AEAT

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Purpose The purpose of this paper is to comprehensively evaluate the progress in the development of trapped vortex combustors (TVCs) in the past three decades. The review aims to identify the needs, predict the scope and discuss the challenges of numerical simulations in TVCs applied to gas turbines. Design/methodology/approach TVC is an emerging combustion technology for achieving low emissions in gas turbine combustors. The overall operation of such TVCs can be on very lean mixture ratio and hence it helps in achieving high combustion efficiency and low overall emission levels. This review introduces the TVC concept and the evolution of this technology in the past three decades. Various geometries that were explored in TVC research are listed and their operating principles are explained. The review then categorically arranges the progress in computational studies applied to TVCs. Findings Analyzing extensive literature on TVCs the review discusses results of numerical simulations of various TVC geometries. Numerical simulations that were used to optimize TVC geometry and to enhance mixing are discussed. Reactive flow studies to comprehend flame stability and emission characteristics are then listed for different TVC geometries. Originality/value To the best of the authors’ knowledge, this review is the first of its kind to discuss extensively the computational progress in TVC development specific to gas turbine engines. Earlier review on TVC covers a wide variety of applications including land-based gas turbines, supersonic Ramjets, incinerators and hence compromise on the depth of analysis given to gas turbine engine applications. This review also comprehensively group the numerical studies based on geometry, flow and operating conditions.

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“…W.J. Fan et al [8] proposed a new ultra-compact combustion mode to further increase the configurable compactness with improvements to the flow and combustion characteristics. The relationships of the flow and combustion characteristics with the combustor configuration were numerically investigated in detail, and the calculation model was verified experimentally.…”

Section: Introductionmentioning

confidence: 99%

Design and Modelling of Biodiesel Fueled Combustion Chamber

Azab

El-Kady

Ismail

2020

Journal of Al-Azhar University Engineering Sector

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Gas turbines combustion chambers (CC) are considered compact, high thermal power generator with low emissions when compared with conventional burners. The hot gases exiting from the gas turbine CC are of moderate temperature range (900 to 1100 K). Large quantities of homogeneous temperature distribution gases can be attained. Many industrial heating applications requires homogeneous and moderate temperature heating medium. The present study main objective is to design a combustor for heating purposes based on the main concept of the technology employed in gas turbine combustor design. The study includes the development of a 3D CFD numerical model for the design purposes. The model is of variable thermal power generation ranging from 50 to 100 kW. The aim of the experimental part of the study is to validate the developed CFD model. The combustor operated with liquid bio fuel as an alternative of depleting fossil fuel, and having better environmental impact. Good agreement was attained between the numerical and the experimental results. The total pressure loss in the combustor was less than 7%. The exhaust gas analysis for 100 kW thermal power revealed very low NOx emissions around 0 ppm and low CO 2 mole fraction of 1.8 %. A homogeneous exit temperature of average 800 o C was attained. Simulation results indicated that the suggested design produce good mixing and air penetration.

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Influence of flame stabilization and fuel injection modes on the flow and combustion characteristics of gas turbine combustor with cavity

Cited by 19 publications

References 21 publications

Dry-Low Emission Gas Turbine Technology: Recent Trends and Challenges

Dry-Low Emission Gas Turbine Technology: Recent Trends and Challenges

A review of computational studies on trapped vortex combustors for gas turbine applications

Design and Modelling of Biodiesel Fueled Combustion Chamber

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