Head-On Collison of a Planar Shock Wave with Deformable Porous Foams

Two-dimensional physical and numerical models for predicting the characteristics of the flowfield during an unsteady interaction between a planar shock wave moving through air and a deformable saturated porous material were developed using the representative-elementary-volume approach. The numerical...

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Bibliographic Details
Published in:AIAA journal 2005-08, Vol.43 (8), p.1776
Main Authors: Malamud, G, Levi-Hevroni, D, Levy, A
Format: Article
Language:English
Subjects:
Aircraft
Eulers equations
Flow control
Fluid dynamics
Numerical analysis
Online Access:Get full text
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Summary:Two-dimensional physical and numerical models for predicting the characteristics of the flowfield during an unsteady interaction between a planar shock wave moving through air and a deformable saturated porous material were developed using the representative-elementary-volume approach. The numerical model is based on a twophase arbitrary Lagrangian Eulerian finite difference scheme to solve the flowfield governing equations. The multidimensional effects of the head-on collision were investigated. The physical model is validated by comparing the numerical predictions qualitatively and quantitatively to one- and two-dimensional shock-foam interaction experimental results. Good agreement was obtained both in one- and two-dimensional cases. It was found that wall friction results in shear bands (i.e., localized high vorticity), which affects the flowfield characteristics. Therefore, the common one-dimensional models are not valid in the vicinity of the shock tube sidewalls. [PUBLICATION ABSTRACT]
ISSN:0001-1452
1533-385X