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Article


Title

Identification of Aluminium Powder Properties for Modelling Free Air Explosions

Authors

[ 1 ] Instytut Analizy Konstrukcji, Wydział Inżynierii Lądowej i Transportu, Politechnika Poznańska | [ 2 ] Instytut Budownictwa, Wydział Inżynierii Lądowej i Transportu, Politechnika Poznańska | [ P ] employee

Scientific discipline (Law 2.0)

[2.6] Civil engineering and transport
[2.8] Mechanical engineering
[2.9] Environmental engineering, mining and energy

Year of publication

2022

Published in

Materials

Journal year: 2022 | Journal volume: vol. 15 | Journal number: iss. 4

Article type

scientific article

Publication language

english

Keywords
EN
  • aluminium powder
  • detonation
  • explosive
  • combustion
  • oxidation
  • equation of state
Abstract

EN Aluminium is a component in many energetic formulations. Therefore, its combustion is one of the main thermochemical processes that govern the output from the energetics. Modelling aluminium combustion is a challenging task because the process is highly complex and difficult to measure. Here, tests of aluminium powder were conducted in an effort to isolate the burning of the aluminium and to determine an adequate representation of this process. Charges of 100 g and 500 g were tested, and the size of the Al/air cloud and the ratio of components in the Al/air mixture were determined, which has not been published previously. This information was used to assess the validity of the assumption that the detonation of the mixture was representative of the event. Parameters for the Jones–Wilkins–Lee equation of state for the explosive mixture and detonation products were defined. Simulations of the tests were performed, and the results were consistent with the field test data, indicating that detonation occurred when there was a mixture of 70–75% Al and 25–30% air by mass.

Date of online publication

10.02.2022

Pages (from - to)

1294-1 - 1294-13

DOI

10.3390/ma15041294

URL

https://www.mdpi.com/1996-1944/15/4/1294

Comments

Article Number: 1294

License type

CC BY (attribution alone)

Open Access Mode

open journal

Open Access Text Version

final published version

Date of Open Access to the publication

at the time of publication

Points of MNiSW / journal

140.0

Impact Factor

3.623 [List 2020]

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