Experimental and theoretical analysis of carbon driven detonation waves in a heterogeneously premixed Rotating Detonation Engine

Dunn, Ian B.; Malik, Vidhan; Flores, Wilmer; Morales, Anthony J.; Ahmed, Kareem A.

doi:10.1016/j.fuel.2021.121128

Cited by 20 publications

(4 citation statements)

References 37 publications

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“…Anthracite dust improved the velocity and peak pressure of the RDW, and an increase in equivalence ratio initially increased and then decreased the thrust of the RDC, demonstrating the existence of an optimal fuel equivalence ratio. Extensive numerical simulations and experimental research have confirmed the feasibility of using pulverized coal in RDW applications, demonstrating high fuel efficiency [30][31][32][33] .…”

mentioning

confidence: 85%

“…Bykovskii et al 31 designed RDC of varying physical sizes and explored the detonation characteristics of coals with different qualities (composition, particle size) using H 2 as an auxiliary burst methane. Dunn et al 32 confirmed that coal dust enhances detonation in RDC and that the detonation heat generated by the coal dust detonation is linearly related to the amount of coal dust added. Xu et al 33 conducted experimental studies on anthracite/H 2 /oxygen fuel in RDC, revealing that volatile coal dust particles can increase the operating range of the rotating detonation wave (RDW) by at least 15%.…”

Section: Introductionmentioning

confidence: 96%

“…Li et al 30 studied the equivalence ratio of methane-solid two-phase fuel using CFD fluid software (ANYS-FLUENT), and found that the equivalence ratio affects the stable propagation of RDW. Pioneers like Bykovskii et al 31 , 32 and Dunn et al 32 have successfully operated rotating detonation engines (RDC) using coal/H 2 as the primary solid fuel during the experimental phase. Bykovskii et al 31 designed RDC of varying physical sizes and explored the detonation characteristics of coals with different qualities (composition, particle size) using H 2 as an auxiliary burst methane.…”

Section: Introductionmentioning

confidence: 99%

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Study on detonation characteristics of pulverized coal and evolution law of detonation residue

Guo,

Ge,

Guo

et al. 2024

Sci Rep

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This study explores the detonation characteristics and compositional changes of pulverized coal, focusing on its use in Rotary Detonation Wave (RDW) technologies. While pulverized coal has shown high fuel efficiency in RDW settings, transitioning from theory to practical detonation engineering presents substantial scientific and technical hurdles. A key issue is the reprocessing of detonation byproducts for in-situ coal mine gob filling, a topic that has received little attention. Utilizing advanced methods like X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR), this paper investigates the micro-morphology, composition, and aromatic structures of gas–solid products pre and post-detonation at the Tashan Coal Mine's 2305 working face. Results indicate that coal dust from the underground mining face has enhanced detonation characteristics, with the addition of coal powder fuel extending the gas detonation limits. This benefits economic aspects by reducing reliance on gas fuel and lowering detonation fuel costs. The highest recorded detonation wave velocity was 2450 m/s, 14.8% greater than that of coal dust from external sources, suggesting more effective energy release and pressure gain. Furthermore, the study links detonation combustion intensity to coal's aromatic properties, noting a post-detonation aromaticity index (I) of 0.4941. This indicates an improvement in the aromatic structure under high-temperature conditions, vital for coal's reactivity and energy efficiency in RDW applications. This research not only deepens the understanding of coal dust combustion mechanisms but also advances clean coal utilization and deep coal fluidization mining, addressing significant RDW technological challenges.

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confidence: 85%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Study on detonation characteristics of pulverized coal and evolution law of detonation residue

Guo,

Ge,

Guo

et al. 2024

Sci Rep

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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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Numerical Evaluation of Varying Combustion Chamber Length on the Performance of Pulse Detonation Engine Using DES Model

Pallela,

Kumar,

Thakur

et al. 2024

Int. J. Aeronaut. Space Sci.

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Experimental and theoretical analysis of carbon driven detonation waves in a heterogeneously premixed Rotating Detonation Engine

Cited by 20 publications

References 37 publications

Study on detonation characteristics of pulverized coal and evolution law of detonation residue

Study on detonation characteristics of pulverized coal and evolution law of detonation residue

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

Numerical Evaluation of Varying Combustion Chamber Length on the Performance of Pulse Detonation Engine Using DES Model

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