Airblast Propagation through Tunnels and the Effects of Wall Roughness

Abstract

This report reviews the possiblity of large airblast attenuation in the case of rough-walled tunnel systems in underground ammunition storage sites. A comparison is made between the peak pressure attenuation observed in three tests with tunnel diameters ranging from 2,7 - 6 m. These results are shown to be consistent with a semi-empirical theory for steady turbulent flow in rough tunnels. The use of tunnels with large wall roughness is shown to reduce considerably the hazardous area around an underground ammunition storage site compared to sites with smooth-walled tunnels.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1975
Accession Number
ADA020817

Entities

People

  • A. T. Skjeltorp

Tags

DTIC Thesaurus Topics

  • Ammunition
  • Attenuation
  • Diameters
  • Flow
  • Physical Properties
  • Roughness
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Explosive Engineering.
  • Fluid Dynamics.