AFWL HULL Calculations of Square-Wave Shocks on a Ramp.

Abstract

Hydrodynamic calculations using the HULL code are performed to predict peak airblast overpressure loading on structures. The code uses an Eulerian rectangular mesh. Geometric shapes within the grid are approximated by rectangular islands, where an island is a zone within the mesh for which all four boundaries are reflective. Thus, a ramp would be modeled as a stairway of islands. To demonstrate the validity of this approximation, a calculation was made which compares favorably with experiments. Two other calculations were run to examine the use of nonsquare zoning as a valid approach to structure modeling.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1977
Accession Number
ADA044289

Entities

People

  • Charles E. Needham
  • Henry J. Happ Iii
  • Peter W. Lunn

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Boundaries
  • Bow Shock
  • Flow
  • Government Procurement
  • Governments
  • Mass Flow
  • Measurement
  • Overpressure
  • Reflection
  • Shock
  • Shock Waves
  • Square Waves
  • Steady State
  • Two Dimensional
  • Waves

Fields of Study

  • Physics

Readers

  • Explosive Engineering.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Naval Architecture and Marine Engineering.