Experimental investigation of flow field characteristics in a mixed-flow trapped vortex combustor

Jiang, Ping; He, Xiaomin

doi:10.1016/j.ast.2019.105533

Cited by 25 publications

(2 citation statements)

References 29 publications

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“…TVC's working principle is based on cavity stabilization. The cavity inside the TVC combustor provides a recirculation zone to trap the vortex pilot flame and produces a constant source of ignition at a high rate [12,13]. The continuous ignition or pilot flame offers better mixing inside the cavity that helps to increase the efficiency of the combustion process and reduce greenhouse gas emissions [14].…”

Section: Trapped Vortex and Mild Combustionmentioning

confidence: 99%

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: 99%

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

et al. 2022

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“…Traditional aero engines or gas turbines often use a swirler as the flame stabilizer, − which has a positive effect on the atomization and evaporation of liquid fuels, but with an inefficient fuel and air mixing as well as a narrow combustion stabilization range. Therefore, it is necessary to develop various efficient combustion and flame stabilization technological devices, such as trapped vortex combustor, , advanced vortex combustor, , and cavity-stabilized combustor for ramjet or scramjet, , the principle of which involves the addition of blunt bodies or cavity structures in the combustors to form a low-speed recirculation zone for fuel and air mixing and combustion. The vortex-stabilized combustion technology has attracted more and more researchers because of its advantages in terms of combustion efficiency, wide lean burn-out limit, and pollutant emissions.…”

Section: Introductionmentioning

confidence: 99%

Effects of Hydrogen Multijet and Flow Rate Assignment on the Combustion Flow Characteristics in a Jet-Stabilized Combustor

et al. 2021

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In this study, a hydrogen fuel jet-stabilized combustor is proposed, the combustion flow characteristics are numerically investigated under the conditions of three equivalence ratios (1, 0.37, and 0.22), and the effects of hydrogen flow rate assignment on the combustion flow are also analyzed. The results show that it is easier for the multijet scheme to form a full and stable vortex structure pair in the recirculation zone under lean conditions than the single-jet scheme, and it has a uniform reaction rate to form larger combustion zones, which makes it easier to achieve flame stabilization. The combustion efficiency of two fuel jet schemes is less than 65% when the equivalence ratio is 1, and complete combustion can be achieved under lean conditions; however, the outlet temperature distribution factor (OTDF) is basically the same. For the multijet scheme with an equivalence ratio of 0.22, as the flow rate assigned to the central jet decreases, a stable and full vortex pair is formed in the recirculation zone, and a high-temperature region can be formed under each working condition, but its area decreases with the central jet flow rate. The combustion efficiency in the recirculation zone increases first and then decreases as the central jet flow decreases, and the OTDF decreases with it.

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Effect on Fuel Supply Angle on Outlet Temperature Distribution and NOx Emission in a Micro Trapped Vortex Combustor

Xiong,

Jiang,

et al. 2024

Environmental Science and Engineering

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Experimental investigation of flow field characteristics in a mixed-flow trapped vortex combustor

Cited by 25 publications

References 29 publications

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

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

Effects of Hydrogen Multijet and Flow Rate Assignment on the Combustion Flow Characteristics in a Jet-Stabilized Combustor

Effect on Fuel Supply Angle on Outlet Temperature Distribution and NOx Emission in a Micro Trapped Vortex Combustor

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