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Modélisation mathématique de fuites cryogéniques dans des eaux de mer calmes suivies de feux en nappe de gaz naturel liquéfié (LNG).

Mathematical modeling of cryogenic spills onto quiescent sea waters followed by pool fires of liquefied natural gas (LNG).

Auteurs : ESTEVES A. S., REIS-PARISE J. A.

Type d'article : Article

Résumé

Spill and combustion of a pool as a result of a spreading of liquefied natural gas (LNG) at sea from punctures on carrier hulls is presented. Models from literature combined mechanisms of flow through an orifice, formation of a semicircular pool, vaporization of a cryogenic fluid by boiling and pool fire heating, ignition, non-premixed turbulent fire with variation with height of the emissive power of the ‘visible’ plume, burning of fuel along the ‘luminous ’ zone ( fire base) and radiation emitted by gray gases and soot particles from the combustion zone. A review of the experimental data on vaporization velocity and burning rate is presented. Predictions agreed well with existing experimental data and other models. The model simulated fires from 1 to 5 m diameter holes in vessel geometries of 125,000 and 265,000 m3. Predictions are plausible, and robust enough to be applied in industrial practice. The construction of an LNG terminal involves, among other parameters, the prediction of thermal radiation fields emitted by pool fires. This is to evaluate safe distances from vulnerable resources around the facility.

Détails

  • Titre original : Mathematical modeling of cryogenic spills onto quiescent sea waters followed by pool fires of liquefied natural gas (LNG).
  • Identifiant de la fiche : 30009157
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 59 - n. 1-2
  • Date d'édition : 09/2013
  • DOI : http://dx.doi.org/10.1016/j.applthermaleng.2013.06.016

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