Numerical analysis of hydrogen deflagration mitigation by venting through a duct

D. Makarov, F. Verbecke, V. Molkov

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

This paper presents a model and simulation results for the mitigation of a hydrogen-air deflagration by venting through a duct. A large eddy simulation (LES) model, applied previously to study both closed-vessel, and open atmosphere hydrogen-air deflagrations, was developed further to model a hydrogen-air explosion vented through a duct. Sub-grid scale (SGS) flame wrinkling factors were introduced to model major phenomena which contribute to the increase of flame surface area in vented deflagrations. Simulations were conducted to validate the model against 20% hydrogen-air mixture deflagrations (vent diameters 25 and 45 cm) and 10% hydrogen-air mixture deflagration (vent diameter 25 cm). There was reasonable correlation between the simulations and the experimental data. The comparative importance of different physical phenomena contributing to the flame wrinkling is discussed.

LanguageEnglish
Pages433-438
Number of pages6
JournalJournal of Loss Prevention in the Process Industries
Volume20
Issue number4-6
DOIs
Publication statusPublished - 1 Jul 2007

Fingerprint

Ducts
hydrogen
Numerical analysis
Hydrogen
Air
air
Vents
Physical Phenomena
Explosions
explosions
Large eddy simulation
Atmosphere
surface area
simulation models
Mitigation
Simulation

Keywords

  • Deflagration
  • Explosion
  • LES
  • Mitigation
  • Modelling
  • Venting

Cite this

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Numerical analysis of hydrogen deflagration mitigation by venting through a duct. / Makarov, D.; Verbecke, F.; Molkov, V.

In: Journal of Loss Prevention in the Process Industries, Vol. 20, No. 4-6, 01.07.2007, p. 433-438.

Research output: Contribution to journalArticle

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