Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.

Issue 26, 2020
Previous Article Next Article

Shock-induced ejecta transport and breakup in reactive gas

Author affiliations


The transport process of micro-ejecta in reactive gases has recently attracted research attention and interest. Here, we investigate the interaction between shock-induced ejecta of Al and oxygen using a reactive molecular dynamics simulation. The results reveal that metal fragments ejected into reactive gases will quickly increase the temperature of the mixing zone, followed by the deceleration of spikes and a greater shock intensity in the compressed gases, compared with the ejection in inert gases. Moreover, we find that, in vacuum, only a small number of atoms fall out when spherical ejecta particles are finally formed. In the presence of inert gases, several small particles break away from the initial fragments during the transformation of the initially formed strip-shaped fragments into spherical particles, accompanying the detachment of a large number of atoms. When ejecta are transported in reactive gases, the chemical interactions cause more atoms to separate from particles, thus forming smaller fragments and more atomic particles. The research findings show that chemical reactions play an important role in ejecta transport and breakup, which should be considered in future ejecta-transport models for better predictions.

Graphical abstract: Shock-induced ejecta transport and breakup in reactive gas

Back to tab navigation

Supplementary files

Article information

04 Apr 2020
09 Jun 2020
First published
10 Jun 2020

Phys. Chem. Chem. Phys., 2020,22, 14857-14867
Article type

Shock-induced ejecta transport and breakup in reactive gas

B. Wu, F. Wu, P. Wang, A. He and H. Wu, Phys. Chem. Chem. Phys., 2020, 22, 14857
DOI: 10.1039/D0CP01831G

Social activity

Search articles by author