Prediction of Deflagrative Explosions in Variety of Closed Vessels

Wojciech Rudy, Andrzej Pekalski, Dmitriy Makarov, Andrzej Teodorczyk, Vladimir Molkov

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Abstract

In this paper the multi-phenomena deflagration model is used to simulate deflagrative combustion of several fuel–air mixtures in various scale closed vessels. The experimental transient pressure of methane–air, ethane–air, and propane–air deflagrations in vessels of volume 0.02 m3, 1 m3, and 6 m3 were simulated. The model includes key mechanisms affecting propagation of premixed flame front: the dependence of laminar burning velocity of concentration, pressure, and temperature; the effect of preferential diffusion in the corrugated flame front or leading point concept; turbulence generated by flame front itself or Karlovitz turbulence; increase of the flame front area with flame radius by fractals; and turbulence in the unburned mixture. Laminar velocity dependence on concentration, pressure, and temperature were calculated using CANTERA software. Various scale and geometry of used vessels induces various combustion mechanism. Simulations allow insight into the dominating mechanism. The model demonstrated an acceptable predictive capability for a variety of fuels and vessel sizes.
Original languageEnglish
Article number2138
JournalEnergies
Volume14
Issue number8
Early online date11 Apr 2021
DOIs
Publication statusPublished - 11 Apr 2021

Bibliographical note

Funding Information:
Funding: This work has been financially supported by European Union within FP7 Marie Curie Industry-Academia Pathways and Partnerships (IAPP) action, GENFUEL project–610897 WP6.

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

  • CFD modeling
  • Closed vessel
  • Computational fluid dynamics
  • Deflagration
  • Explosion
  • Multi-phenomena deflagration model
  • Simulations

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