Effect of hydrogen flow rate and particle diameter on coal-hydrogen-air rotating detonation engines

Zhu, Wenchao; Wang, Yuhui

doi:10.1016/j.ijhydene.2021.10.088

Cited by 18 publications

(3 citation statements)

References 33 publications

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“…The research results laid a certain foundation for the kinetic dynamics of coal detonation. Based on the commercial CFD software ANSYS FLUENT, Zhu et al 31 simplified the rotating detonation combustion chamber (RDE) coaxial annular cavity into a rectangular tube-like structure, and conducted twodimensional numerical simulations of nonpremixed coal-air fuel combustion reactions. By changing the methane-solid fuel equivalence ratio, they investigated the variation of ignition and continuous detonation process parameters and the distribution law of solid particles.…”

Section: Pgc Technology Provides More Efficient Combustion and Hasmentioning

confidence: 99%

Experimental Study and Application Prospects of Coal Dust/Methane/Oxygen Pulse Detonation Performance: Coal Dust Equivalence Ratio and Types

Guo,

Ge,

Guo

et al. 2024

ACS Omega

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In order to achieve reliable application of coal in pulse detonation combustion chambers, this study explored the influence mechanism of equivalence ratio and coal type (lignite, anthracite) on the detonation characteristics of coal/methane/ oxygen methane-solid two-phase fuel. A high-energy ignition device was used to ignite the preblast methane fuel, and the hightemperature and high-pressure energy generated directly initiated the detonation of coal/methane/oxygen methane-solid two-phase fuel. The experimental results are as follows: (1) The maximum detonation pressure of coal/methane/air fuel is positively correlated with the initial pressure. With the increase of the φ global , the maximum detonation pressure of the two types of coal gradually increases. To be specific, when the φ global rises from 0.5 to 1.6, the sensitivity of lignite and anthracite to the maximum detonation pressure with respect to the initial pressure increases from 4.56 to 6.11 and 5.48, respectively; (2) In terms of detonation flame and maximum pressure wave velocity, anthracite shows better dynamic performance than lignite. The maximum velocity of detonation flame and pressure wave is achieved when the φ global is 1.4.(3) In terms of detonation thrust performance, as the φ global increases from 0.5 to 1.6, the rate of increase in average thrust of the two types of coal first increases and then decreases. Compared with lignite, anthracite has a wider time domain and higher peak value in the average thrust curve and the generated detonation wave displays a greater impulse. The experimental data and conclusions obtained in this study are of practical significance for realizing the engineering application of pulverized coal detonator power generation.

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Section: Pgc Technology Provides More Efficient Combustion and Hasmentioning

confidence: 99%

Experimental Study and Application Prospects of Coal Dust/Methane/Oxygen Pulse Detonation Performance: Coal Dust Equivalence Ratio and Types

Guo,

Ge,

Guo

et al. 2024

ACS Omega

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“…On the other hand, ramjet RDEs at different flight conditions have also been widely examined. For example, Meng et al [17] conducted experiments at an approximate Mach 4 and 20 km altitude condition, and Frolov et al [18] tested the ramjet RDE at an air steam of Mach 5.7 and stagnation temperature of 1500 K. RDE fueled by liquid propellants or clean energy are also attracting increasing attention and led to numerous studies in which kerosene [19][20][21][22], JP-10 [23], n-heptane [24][25][26], ammonia [27], coal-hydrogen-air mixture [28] are all considered. New design of RDC configurations was also proposed, i.e., in the studies of Betelin et al [29] and Mikhalchenko and Nikitin [30], fuel mixture was injected from both the inlet and side walls.…”

Section: Introductionmentioning

confidence: 99%

Effects of inlet and secondary flow conditions on the flow field of rotating detonation engines with film cooling

Yao

et al. 2023

International Journal of Hydrogen Energy

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“…Many countries and organizations already have the ability to perform RDE experiment tests. [2][3][4][5][6][7] Various factors affecting its operation have been investigated, including the ignition method, 8-10 fuel injection, [11][12][13][14] fuel and oxidizer, [15][16][17][18][19] chamber configuration, [20][21][22][23] and nozzle shape. [24][25][26] RDE experiments mostly aim at establishing a rotating detonation wave (RDW) that propagates continuously and stably for a long duration, but studies of the details of flow structures are relatively scarce.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the generation and propagation mechanism of triple-point structures on rotating detonation front

Liu,

Su,

Guo

et al. 2023

AIP Advances

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Based on the Navier–Stokes equation with chemical reaction kinetics, rotating detonation waves are numerically simulated using premixed reactants H2/air at a stoichiometric ratio. The triple-point structure on the detonation front is captured. The self-sustained combustion process in rotating detonation waves is analyzed. Through innovatively utilizing the cell structure, the essential moments of the generation and propagation of new triple-point structures at the unbounded side of the rotating detonation front are discriminated successfully. The generation model of the new triple-point structure is proposed. The new model helps deeply understand the essence of self-sustained combustion in rotating detonation waves, which may serve as guidance in the engineering design of the rotating detonation engines.

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Effect of hydrogen flow rate and particle diameter on coal-hydrogen-air rotating detonation engines

Cited by 18 publications

References 33 publications

Experimental Study and Application Prospects of Coal Dust/Methane/Oxygen Pulse Detonation Performance: Coal Dust Equivalence Ratio and Types

Experimental Study and Application Prospects of Coal Dust/Methane/Oxygen Pulse Detonation Performance: Coal Dust Equivalence Ratio and Types

Effects of inlet and secondary flow conditions on the flow field of rotating detonation engines with film cooling

Investigation on the generation and propagation mechanism of triple-point structures on rotating detonation front

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