Diagnostic in a reverse-flow aeroengine model combustor under elevated inlet pressure and temperature using spontaneous Raman

Chen, Shuzhen; Lin, Binhui; Shen, Lihua; Cai, Jianghuai; Xu, Wenjiang; You, Yancheng

doi:10.1007/s00340-022-07775-1

Cited by 3 publications

(3 citation statements)

References 28 publications

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“…Zhang et al [65,66] and He et al [67,68] at Zhejiang University performed studies on RP-3 aviation kerosene, investigating the secondary breakup, ignition delay time, and flame characteristics of single droplets in a static environment (0.02-0.1 MPa), as seen in Figure 9. The research results revealed that the flame propagation time from the burning droplet to the unburned droplet is proportional to the normalized spacing distance be- The research of Chen et al [63] showed that under low-pressure conditions, the flame front contracts toward the nozzle, and the luminous intensity of CH* is decreased. When the simulated flight altitude increases from 2 km to 10 km, the flame color changes from yellow to blue, indicating an enhancement in combustion instability.…”

Section: Subatmospheric Combustionmentioning

confidence: 99%

“…They studied the relationship between ignition time, droplet diameter, and far-field temperature, emphasizing the necessity of spark-induced mixture formation around the droplet in low-pressure environments. The research of Chen et al [63] showed that under low-pressure conditions, the flame front contracts toward the nozzle, and the luminous intensity of CH* is decreased. When the simulated flight altitude increases from 2 km to 10 km, the flame color changes from yellow to blue, indicating an enhancement in combustion instability.…”

Section: Subatmospheric Combustionmentioning

confidence: 99%

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A Survey of Flow Field and Combustion Characteristics under Subatmospheric Pressure

Ding,

Yao,

Zhu

et al. 2024

Aerospace

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This paper presents a summary of and introduction to research on high-altitude and subatmospheric combustion concerning turbine and scramjet engines. The investigation includes theoretical analysis, experimental studies, and numerical simulations. The analysis encompasses the flow field structure, fuel atomization, and combustion performance. Subsequently, recent research on the combustion performance of liquid fuels, solid fuels, and gaseous fuels under high-altitude and low-pressure plateau environments is reviewed. This includes an evaluation of flame height, flame temperature, combustion rate, fire spread rate, and heat radiation flux. Additionally, combustion performance prediction models for high-altitude environments based on experimental and theoretical analysis have been introduced. Lastly, issues in subatmospheric combustion in the aerospace and plateau fire fields are presented based on the current research.

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Section: Subatmospheric Combustionmentioning

confidence: 99%

Section: Subatmospheric Combustionmentioning

confidence: 99%

A Survey of Flow Field and Combustion Characteristics under Subatmospheric Pressure

Ding,

Yao,

Zhu

et al. 2024

Aerospace

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“…And lower air flow velocity is conducive to the stability of flame. Chen 15 introduced the design of the simulated altitude test facility (TSATF) and carried out the high-altitude relight tests. The results show that the flame in the combustor is blue at the simulation altitude of 4 km, and turns to light blue completely at the simulation altitude of 10 km.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the ignition performances on a linear combustor under high-altitude conditions

Wang

Liu

Wang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part G:

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The ignition reliability of combustor is related to the safety of the whole machine, especially the high-altitude ignition and combustion stability, which are the common requirements of the combustor. In this paper, the simulated altitude test facility was introduced. And the ignition performances of a linear combustor with five burners were carried out under the simulated altitude of 0–8 km, including the ignition boundary and flame propagation between burners. The process of flame propagation was recorded by a high-speed camera. The results indicate that the fuel-air ratio increases with the increase of altitude at the same pressure drop, and it decreases with the increase of pressure drop. For the period of ignition delay, the evaporation of droplets and the chemical delay process are mainly affected with the increase of altitude. At the altitude of 6 km to 8 km, flame propagates from burner to burner in an axial pattern, and the influence of altitude on flame propagation is mainly manifested in ignition delay and initial flame propagation. The key to improve the reliability of high-altitude ignition is to improve the fuel atomization and evaporation characteristics. The contribution of this article is to explore the mechanism of altitude on ignition characteristics and propose two methods to improve the high-altitude ignition characteristics.

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Performance seeking control method for minimum pollutant emission mode for turbofan engine

Zheng,

Zhang,

et al. 2024

Energy

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Diagnostic in a reverse-flow aeroengine model combustor under elevated inlet pressure and temperature using spontaneous Raman

Cited by 3 publications

References 28 publications

A Survey of Flow Field and Combustion Characteristics under Subatmospheric Pressure

A Survey of Flow Field and Combustion Characteristics under Subatmospheric Pressure

Experimental study of the ignition performances on a linear combustor under high-altitude conditions

Performance seeking control method for minimum pollutant emission mode for turbofan engine

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