Centerline Discrepancies in HULL Axisymmetric Calculations

Abstract

Axisymmetric calculations using the HULL hydrocode exhibit peculiar jetlike artifacts near the axis of symmetry. A series of numerical experiments were performed to determine the cause of this behavior. Governing equations and boundary conditions in the HYDRO subroutine were modified and tested. Results show considerable improvements of the artifacts. Calculations were performed with an airblast model and compared with experimental data and previous calculations.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1993
Accession Number
ADA268831

Entities

People

  • Amitabha Ghosh

Organizations

  • Rochester Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Artifacts
  • Axisymmetric
  • Blast
  • Boundaries
  • Computational Fluid Dynamics
  • Computer Programs
  • Engineering
  • Engineers
  • Equations
  • Experimental Data
  • Explosions
  • Flow
  • Ground Zero
  • Hydrocodes
  • Procedures (Computers)
  • Symmetry
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Explosive Engineering.
  • Fluid Mechanics and Fluid Dynamics.
  • Structural Dynamics.