This article is cited in 7 papers

Distribution of aluminum clusters and their ignition in air during dispersion of aluminum nanoparticles in a shock wave

P. S. Kuleshov^ab, V. D. Kobtsev<sup>ca

a</sup> Baranov Central Institute of Aviation Engineering, 111116, Moscow, Russia
^b Moscow Institute of Physics and Technology (MIPT), 141701, Dolgoprudny, Russia
^c Prokhorov General Physics Institute, Russian Academy of Sciences, 119991, Moscow, Russia

Abstract: The dispersion of oxidized $\mathrm{Al}$ nanoparticles into clusters by rapid heating in a shock wave has been studied. Clusters distribution characteristics were calculated as a function of the parameters of the initial nanoparticle distributions and the nature of the interaction of deformation waves with the nanoparticle shell and core. The studies were carried out using the author's proposed resonant mechanism for dispersion of the liquid core of a nanoparticle by a shock pulse upon destruction of the solid oxide shell. The ignition of $\mathrm{Al}$ nanoparticles after dispersion in air was analyzed using the previously described kinetic oxidation mechanism with the evaporation of clusters taken into account. Initial distributions of nanoparticles and their ignition times are validated against published experimental data.

Keywords: nanoparticle, cluster, shock wave, dispersion, dispersion, ignition.

UDC: 546.36

Received: 06.09.2019
Revised: 18.02.2020
Accepted: 15.05.2020

DOI: 10.15372/FGV20200508

 English version: Combustion, Explosion and Shock Waves, 2020, 56:5, 566–575

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