Effects of Different Particle Size Distributions on Aluminum Particle–Air Detonation

Zhang, Z. J.; Wen, Chih-Yung; Liu, Y. F.; Zhang, D. L.; Jiang, Zonglin

doi:10.2514/1.j058237

Cited by 6 publications

(2 citation statements)

References 42 publications

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“…The double peaks in the detonation front is demonstrated theoretically to be attributed to the space-dispersed phase transition processes of particles of different sizes result in an overall moderate heat transfer intensity, which hinders the formation of the heattransfer-dominant stage. These differences between monodisperse and polydisperse J. Zhang [25] two-phase detonations are relative to the multiple timescales and length scales in polydisperse suspension with a continuous particle size distribution.…”

Section: 26)mentioning

confidence: 99%

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Application: Detonations

Wen

Jiang

Shi

2023

Engineering Applications of Computational Methods

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Detonation is a shock-induced combustion in which chemical reactions are closely coupled with shock waves. The shock wave compresses the reactant with an abrupt increase in temperature and pressure, initiating the reactants to be burnt into products. The intense heat release permits the high propagating speed of the shock wave to be sustained. It is fundamental research related to both the safety industry and propulsion systems. For most explosive mixtures, detonation wave speeds are formulated by Chapman–Jouguet (CJ) theory. Typical detonation velocities for gaseous mixtures generally range from 1400 to 3000 m/s. Behind the shock, the time scale for reactions is commonly on the order of microseconds or even less. Furthermore, the detonation front is intrinsically unstable, forming transient multi-dimensional structures. Many studies revealed that high resolution is necessary to resolve the essential detonation structures. Due to its complex nature and multiple time scales, detonation is thus a challenging problem for solvers on shock-capturing capability, robustness, and computational efficiency. This chapter will present several essential aspects of detonation research by applying the CESE schemes.

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Section: 26)mentioning

confidence: 99%

“…8.16 Comparison of cellular detonations (peak pressure contours) of Al-air mixtures: a monodisperse with d p = 2 µm, b polydisperse with d = 2 µm and σ 0 = 0.5, and c polydisperse with d = 2 µm and σ 0 = 0.8. Courtesy of Z. J. Zhang[25]…”

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confidence: 99%