2012 | OriginalPaper | Buchkapitel
Interaction of a Planar Shock with a Dense Field of Particles
verfasst von : J. Wagner, S. Beresh, S. Kearney, W. Trott, J. Castaneda, B. Pruett, M. Baer
Erschienen in: 28th International Symposium on Shock Waves
Verlag: Springer Berlin Heidelberg
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Understanding the particle-particle and shock-particle interactions that occur in dense gas-solid flows is limited by a lack of knowledge of the underlying phenomena. Gas-solid flows are characterized by the particle volume fraction.
ϕ
p
of the flow [1]. For particle volume fractions less than about 0.1%, flow is considered dilute and the effects of particle collisions are negligible [2]. For packed particles, where the .p is greater than about 50%, the flow regime is said to be granular. The dilute and granular regimes have been well studied, but conversely, a substantial knowledge gap exists for dense gas-solid flows, which have intermediate particle volume fractions of about 0.1 to 50%. This regime exists at microsecond time scales during blast-induced dispersal of material when the shocked particles are closely spaced.