Resolution as a Computational Factor in ALEGRA Simulations of a Shaped Charge Jet: Supplemental Study

Abstract

This report follows up on three open questions from a previous study of resolution effects in ALEGRA simulations of a 65-mm shaped charge jet. The underlying cause of fragmented morphology observed in the leading portion of jets at high resolution is investigated. The dependence of the thermodynamic state in the pressure head on temporal discretization is determined. Finally, the accuracy of estimates for resolution-dependent numerical uncertainty is tested against ensembles of randomized simulations at varying resolution.

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Document Details

Document Type
Technical Report
Publication Date
Aug 24, 2020
Accession Number
AD1107171

Entities

People

  • Daniel J. Hornbaker

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Cell Size
  • Department Of Defense
  • Equations
  • Grids
  • High Resolution
  • Kinetic Energy
  • Materials
  • Military Research
  • Normal Distribution
  • Shaped Charge Jets
  • Shaped Charges
  • Simulations
  • Statistical Analysis
  • Three Dimensional
  • Two Dimensional
  • Uncertainty

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.
  • Molecular Photonics/Laser Physics