Effects of refueling position and residence time on pre-combustion cracking characteristic of aviation kerosene RP-3

Fu, Song; Wu, Yun; Xu, Shaohui; Yang, Xingkui; Chen, Xin

doi:10.1016/j.fuel.2020.117548

Cited by 29 publications

(4 citation statements)

References 36 publications

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“…Aiming at aviation kerosene alternative fuel n-decane, Song [34] and Xu [35] carried out a systematic research study on pre-combustion cracked characteristics of hydrocarbon fuel. Song [36][37][38] conducted pre-combustion cracking of kerosene and detected active components in cracked gas such as hydrogen, acetylene, and ethylene. Zhong [39,40] used pre-combustion cracked gas and oxygenenriched air to investigate the effects of the flow rate and equivalence ratio, annular gap width, and combustion chamber width on the characteristics of detonation waves.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Rotating Detonation Fueled by Liquid Kerosene

Zhou

Song

et al. 2022

Energies

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The performance of rotating detonation engines (RDEs) is theoretically better than that of traditional aero engines because of self-pressurization. A type of swirl injection scheme is introduced in this paper for two-phase detonation. On the one hand, experiments are performed on continuous rotating detonation of ternary “kerosene, hydrogen and oxygen-enriched air” mixture in an annular combustor. It is found that increasing the mass fraction of hydrogen can boost the wave speed and the stability of detonation waves’ propagation. One the other hand, characteristics of kerosene–hot air RDE is investigated for engineering application. Some unstable phenomena are recorded, such as changes of the number of detonation waves, low-frequency oscillations, and sporadic detonation.

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Section: Introductionmentioning

confidence: 99%

Investigation of Rotating Detonation Fueled by Liquid Kerosene

Zhou

Song

et al. 2022

Energies

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“…Our research group has been working on a shock wave focusing mechanism [ 23 , 24 , 25 ] and kerosene pre-combustion cracking components control [ 26 , 27 , 28 ] research for some time. In this paper, the experimental diagnosis of multi-cycle shock wave focusing combustion characteristics of RP-3 aviation kerosene pre-combustion pyrolysis products was carried out.…”

Section: Introductionmentioning

confidence: 99%

Experimental Diagnosis on Combustion Characteristic of Shock Wave Focusing Initiation Engine

Song

Chen

et al. 2022

Entropy

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A shock wave focusing initiation engine was assembled and tested in an experimental program. The effective pyrolysis rate of the pre-combustor was evaluated over a range of supplementary fuel ratio in this paper. Results highlight two operational modes of the resonant cavity: (1) pulsating combustion mode, (2) stable combustion mode. The appearance of the two combustion modes is jointly affected by the flow and the structural characteristic value of the combustion chamber. This paper uses images, time-frequency analysis, and nonlinear time series analysis methods to identify and distinguish these two combustion modes. It is believed that the interaction between the combustion chamber and the supply plenum is the probable reason for different combustion modes. The experiment has found that structural parameters and import flow parameters have an impact on the initiation of the combustion chamber. Increasing the injection pressure can appropriately broaden the fuel-rich boundary of initiation. Low equivalence ratio and high injection pressure can also appropriately increase the combustion working frequency in a small range. From the perspective of pressure utilization, under the premise of ensuring successful initiation, injection pressure should not be too high.

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“…The realization of kerosene-air continuous rotating detonation is an important step to the engineering application of RDE. However, due to the large molecular weight and low chemical activity of aviation kerosene, it is very difficult to realize the detonation of kerosene [8]. At present, the commonly used method is to mix hydrogen in kerosene or add oxygen in air to realize the initiation of liquid kerosene [9,10].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on DBD plasma reforming hydrocarbon blends

Xu¹,

Wu²,

Song³

et al. 2021

Plasma Sci. Technol.

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To improve the ‘detonation-supporting’ performance of fuel-rich catalytic combustion products, DBD plasma, stimulated by adjustable nanosecond pulse power supply, was used to further regulate the components and concentrations of the hydrocarbon blends. In this paper, the parameters including load voltage, frequency, rising (falling) edge, pulse width and feeding flow rate were changed respectively, and the corresponding concentration and proportion change of the components in blend gas were investigated. According to the experiment result, it was found that when the discharge frequency is low, the plasma mainly promotes the transformation of light gaseous substances, while it mainly promotes the conversion to heavy hydrocarbons when the frequency is larger. Increasing load voltage will strengthen this trend. The controlling and reforming effect of plasma on the blend gas will decrease with the increase of voltage rising (falling) edge and the feeding flow rate. The regulation effect will be strengthened with the increase of pulse width under 200 ns. With the increase of discharge intensity, the ‘carbon’ settles on the walls of the reactor, which will change the dielectric constant, leading to the loss of control of the discharge.

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Effects of refueling position and residence time on pre-combustion cracking characteristic of aviation kerosene RP-3

Cited by 29 publications

References 36 publications

Investigation of Rotating Detonation Fueled by Liquid Kerosene

Investigation of Rotating Detonation Fueled by Liquid Kerosene

Experimental Diagnosis on Combustion Characteristic of Shock Wave Focusing Initiation Engine

Experimental investigation on DBD plasma reforming hydrocarbon blends

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