Validation of Numerical Simulations of Explosion Fields

Technical Report · Tue Oct 16 04:00:00 EDT 2012

DOI:https://doi.org/10.2172/1059451· OSTI ID:1059451

Kuhl, Allen L. ^[1]

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1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

This report describes test problems that can be used to validate numerical simulations of nuclear explosion fields. A particular emphasis is placed on turbulent mixing and other “non-ideal” effects (thermal layer precursors, turbulent wall jets and dusty boundary layer flows) created by the interaction of the explosion wave with ground surfaces. The importance of such effects is illustrated by a comparison of the peak stagnation pressure versus ground range. In the precursor regime ( HOB < 700 ft / KT^1/3 and GR <1100 ft / KT^1/3 ) stagnation pressures from non-ideal effects are an order of magnitude larger that the corresponding ideal-surface case. Seven problems are considered: (i) blast waves from nuclear explosions, (ii) blast wave reflections from ideal surfaces, (iii) blast wave reflections from ground surfaces, (iv) spherical mixing layers, (v) Kelvin-Helmholtz mixing layers, (vi) wall-bounded mixing layers, and (vii) height of burst curves. The need for additional work is described in the Recommendations section, which includes tasks in support of the V&V, Complex Hydro and Output and Effects Programs.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48; AC52-07NA27344
• OSTI ID: 1059451
• Report Number(s): LLNL--TR-609492
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS