Blast wave attenuation in liquid foams: Role of gas and evidence of an optimal bubble size

Martin Monloubou, Myrthe A. Bruning, Arnaud Saint-Jalmes, Benjamin Dollet, Isabelle Cantat*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)

Abstract

Liquid foams are excellent systems to mitigate pressure waves such as acoustic or blast waves. The understanding of the underlying dissipation mechanisms however still remains an active matter of debate. In this paper, we investigate the attenuation of a weak blast wave by a liquid foam. The wave is produced with a shock tube and impacts a foam, with a cylindrical geometry. We measure the wave attenuation and velocity in the foam as a function of bubble size, liquid fraction, and the nature of the gas. We show that the attenuation depends on the nature of the gas and we experimentally evidence a maximum of dissipation for a given bubble size. All features are qualitatively captured by a model based on thermal dissipation in the gas.

Original languageEnglish
Pages (from-to)8015-8024
Number of pages10
JournalSoft matter
Volume12
Issue number38
DOIs
Publication statusPublished - 2016
Externally publishedYes

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