Spectral analysis and modelling of the spray liquid injection in a Lean Direct Injection (LDI) gas turbine combustor through Eulerian-Lagrangian Large Eddy Simulations

Broatch, A.; Carreres, Marcos; García-Tíscar, J.; Belmar-Gil, M.

doi:10.1016/j.ast.2021.106992

Cited by 16 publications

(3 citation statements)

References 55 publications

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“…A small pressure exponent indicates that the burning rate of the propellant is less sensitive to changes in pressure. This provides a more stable combustion process, ensuring consistent performance of the propellant across different operating conditions [24–26]. This stability is particularly important for applications that require precise control of burning rate, such as missile or rocket engines.…”

Section: Resultsmentioning

confidence: 99%

A model for the combustion behavior of AP/HTPB propellant containing ultrafine aluminum

Chen,

Xue,

2024

Propellants Explo Pyrotec

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Nano‐aluminum, renowned for its remarkable efficacy in augmenting propulsion efficiency and regressive velocity, stands out as a compelling choice for incorporation into heterogeneous propellant compositions. Nevertheless, the considerable expense of this ultrafine aluminum variant, coupled with the inherent hazards associated with conducting propellant trials, may deter extensive allocation of resources and efforts towards the intricate processes of amalgamation, molding, and comprehensive analysis of the combustion characteristics of freshly devised propellant blends. To provide theoretical support for predicting the chemical properties of nano‐Al composite propellant, we establish a numerical framework to study the combustion characteristics under the working environment of a solid rocket motor. A new five‐step kinetic mechanism is developed in this model to describe the reaction process in the gas phase while accounting for heat conduction, radiative effects, and non‐planar moving surfaces. The comparison between our theoretical work and experimental results confirms that making no distinction among Al particle sizes below 3 μm is reasonable. Finally, the effects of nano‐Al on combustion, burning rate variation, and temperature sensitivity are analyzed in detail.

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Section: Resultsmentioning

confidence: 99%

A model for the combustion behavior of AP/HTPB propellant containing ultrafine aluminum

Chen,

Xue,

2024

Propellants Explo Pyrotec

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“…Fuel droplet atomization, evaporation, and combustion are crucial for enhancing fuel efficiency and mitigating emissions for a direct-injection, internal combustion engine that utilizes liquid fuel [1][2][3][4]. The evaporation of fuel droplets within the cylinder during the operational cycle is a significant factor in creating the combustible gas mixture.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Evaporation Characteristics of Acoustically Levitated Fuel Droplets at High Temperatures

Pang,

Yang,

Liu

et al. 2024

Energies

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Examining fuel droplet evaporation is crucial for enhancing fuel engine efficiency, conserving energy, and reducing emissions. This study utilizes experimental methods involving ultrasonic standing wave levitation and high-speed cameras to investigate the impact of temperatures and droplet properties, including initial diameter and composition, on the evaporation process. The evaporation behaviors of fuel droplets, like hexadecane and diesel, are documented across a temperature spectrum spanning 150 °C to 550 °C, with an initial droplet equivalent diameter ranging from 0.10 to 0.30 mm. The evaporation rate positively correlates with temperature and may vary by 15% to 71% between hexadecane and diesel droplets.

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“…In automobile, aircraft, and rocket engines, where there is forced convection, oscillating pressure and high temperatures, droplet evaporation becomes more complex, which is critical to form flammable mixtures for subsequent combustion. Therefore, it is essential to understand the droplet evaporation characteristics to enhance power performance and decrease pollutant emissions [6] , [7] , [8] , [9] , [10] , [11] .…”

Section: Introductionmentioning

confidence: 99%

Evaporation issues of acoustically levitated fuel droplets

Yang

et al. 2023

Ultrasonics Sonochemistry

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Spectral analysis and modelling of the spray liquid injection in a Lean Direct Injection (LDI) gas turbine combustor through Eulerian-Lagrangian Large Eddy Simulations

Cited by 16 publications

References 55 publications

A model for the combustion behavior of AP/HTPB propellant containing ultrafine aluminum

A model for the combustion behavior of AP/HTPB propellant containing ultrafine aluminum

Experimental Study of Evaporation Characteristics of Acoustically Levitated Fuel Droplets at High Temperatures

Evaporation issues of acoustically levitated fuel droplets

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