Numerical investigation for pressure mitigation effects of dike on blast wave

Hiroaki Miura, Akiko Matsuo, Go Tabuchi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The three-dimensional and two-dimensional axisymmetric fluid dynamics simulations were carried out to clarify the blast pressure mitigating effects of dike's configuration in hemispherical explosion. The simulated peak overpressure on the ground under the hemispherical explosion was compared with the empirical formula by Kingery, and the simulated data were validated. In the analysis, the simplification techniques for the numerical simulation were employed under the following two assumptions. The pressure distribution behind the wide dike was estimated using the axisymmetric flowfield, and the back step model was applied under the small condition for θ, the angle formed by the ground and the line between the explosion core and the dike front corner. From the simulated results, it is clarified that the large θ provided the great reduction of the blast wave pressure at faraway position. In the small θ condition, the conditions of the dike end position and the dike height were significant parameters determining the magnitude of pressure reduction and mitigated area. The pressure reduction at the dike end and mitigated area were predicted numerically, and related to the dike conditions.

Original languageEnglish
Pages (from-to)329-337
Number of pages9
JournalJournal of Loss Prevention in the Process Industries
Volume26
Issue number2
DOIs
Publication statusPublished - 2013 Mar 1

    Fingerprint

Keywords

  • Blast mitigation
  • Blast wave
  • Dike
  • Protective wall

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Food Science
  • Chemical Engineering(all)
  • Safety, Risk, Reliability and Quality
  • Energy Engineering and Power Technology
  • Management Science and Operations Research
  • Industrial and Manufacturing Engineering

Cite this