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Title: Stability of imploding shocks generated by underwater electrical explosion of cylindrical wire array

The results of two-dimensional hydrodynamic simulations of the dynamics and stability of azimuthal non-uniformities in converging shock waves generated by an underwater explosion of a cylindrical wire array and their effect on the cumulation of energy in the vicinity of the converging axis are presented. It has been shown that in spite of the fact that such non-uniformities are always weakly unstable, for a broad range of experimentally relevant regimes these non-uniformities remain small and do not significantly affect the cumulation of energy. Only the non-uniformities with wavelengths comparable to the distance from the axis of convergence exhibit substantial growth that considerably attenuates the energy cumulation.
Authors:
; ;  [1]
  1. Physics Department, Technion, Haifa 32000 (Israel)
Publication Date:
OSTI Identifier:
22218430
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 11; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPARATIVE EVALUATIONS; CONVERGENCE; CYLINDRICAL CONFIGURATION; EXPLODING WIRES; PLASMA; PLASMA INSTABILITY; PLASMA SIMULATION; SHOCK WAVES; TWO-DIMENSIONAL CALCULATIONS; UNDERWATER