Experimental research on self-initiation process of rotating detonation wave by high-temperature ethylene-rich gas

Qiu, Han; Bai, Qiaodong; Han, Jiaxiang; Huang, Bingyao; Liu, Zhuyong; Weng, Chunsheng

doi:10.1016/j.fuel.2023.129795

Cited by 4 publications

(1 citation statement)

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“…Some studies have shown that the activity of liquid fuels is low; therefore, it is necessary to add a certain percentage of high-activity gaseous fuels to liquid fuels [14,15] or to adopt oxygen-enriched [16][17][18] and preheating [19][20][21] methods to accelerate the evaporation and atomization of the liquid fuels. Adopting atomizers [22][23][24] is another common method to improve fuel atomization and mixing.…”

Section: Introductionmentioning

confidence: 99%

Combustion Mechanism of Gasoline Detonation Tube and Coupling of Engine Turbocharging Cycle

Huang,

Wang,

Shi

et al. 2024

Energies

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Traditional exhaust-gas turbocharging exhibits hysteresis under variable working conditions. To achieve rapid-intake supercharging, this study investigates the synergistic coupling process between the detonation and diesel cycles using gasoline as fuel. A numerical simulation model is constructed to analyze the detonation characteristics of a pulse-detonation combustor (PDC), followed by experimental verification. The comprehensive process of the flame’s deflagration-to-detonation transition (DDT) and the formation of the detonation wave are discussed in detail. The airflow velocity, DDT time, and peak pressure of detonation tubes with five different blockage ratios (BR) are analyzed, with the results imported into a one-dimensional GT-POWER engine model. The results indicate that the generation of detonation waves is influenced by flame and compression wave interactions. Increasing the airflow does not shorten the DDT time, whereas increasing the BR causes the DDT time to decrease and then increase. Large BRs affect the initiation speed of detonation in the tube, while small BRs impact the DDT distance and peak pressure. Upon connection to the PDC, the transient response rate of the engine is slightly improved. These results can provide useful guidance for improving the transient response characteristics of engines.

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