On cylindrically converging shock waves shaped by obstacles

PHYSICA D-NONLINEAR PHENOMENA

卷:237

Article

Eliasson, Veronica^1,2  Henshaw, William D.³  Appeloe, Daniel³ 

[1] Royal Inst Technol, KTH Mech, SE-10044 Stockholm, Sweden

[2] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA

[3] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

关键词: converging shock;    Mach reflection;    regular reflection;    adaptive mesh refinement;    overlapping structured grids;   

DOI  :  10.1016/j.physd.2007.11.021

来源: Elsevier

【 摘 要 】

Motivated by recent experiments, numerical simulations of cylindrically converging shock waves were performed. The converging shocks impinged upon a set of 0-16 regularly space obstacles. For more than two obstacles the resulting diffracted shock fronts formed polygonal shaped patterns near the point of focus. The maximum pressure and temperature as a function of the number of obstacles were studied. The self-similar behavior of cylindrical, triangular and square-shaped shocks was also investigated. (c) 2007 Elsevier B.V. All rights reserved.

【 授权许可】

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