Guidelines for simulating cryogenic film boiling using volume of fluid (VOF) method

Monir Ahammad, Tomasz Olewski, Yi Liu, Samina Rahmani, Sam Mannan, Luc Vechot

Research output: Contribution to journalArticle

Abstract

The quality of a risk assessment performed in the context of the cryogenic liquid spills (e.g., LNG) depends on the accurate estimation of the vapor formation due to heat transfer from the ground. During an accidental spill, cryogenic liquids undergo different boiling regimes, from initial film boiling to nucleate boiling via a short living transition regime. At the early stage of the spill, the temperature difference between the liquid and the ground is relatively large; therefore the boiling is expected to fall in the film boiling regime. Thus for an accurate estimation of spill consequences and the simulation of pool spreading, film boiling simulation for cryogenic liquid is very important but unfortunately not trivial. This paper discusses the use of computational fluid dynamic (CFD) approach for the simulation of film boiling of a cryogenic liquid and provides a general guideline to simulate film boiling using a commercial CFD software package ANSYS-FLUENT.

Original languageEnglish
JournalInstitution of Chemical Engineers Symposium Series
Volume2015-January
Issue number160
Publication statusPublished - 2015

Fingerprint

Cryogenics
Boiling liquids
Cryogenic liquids
Hazardous materials spills
Fluids
Computational fluid dynamics
Nucleate boiling
Liquefied natural gas
Software packages
Risk assessment
Vapors
Heat transfer
Liquids

Keywords

  • CFD
  • Cryogenic liquid boiling
  • LNG spill
  • Source term modelling
  • Volume of fluid

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Guidelines for simulating cryogenic film boiling using volume of fluid (VOF) method. / Ahammad, Monir; Olewski, Tomasz; Liu, Yi; Rahmani, Samina; Mannan, Sam; Vechot, Luc.

In: Institution of Chemical Engineers Symposium Series, Vol. 2015-January, No. 160, 2015.

Research output: Contribution to journalArticle

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AU - Mannan, Sam

AU - Vechot, Luc

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AB - The quality of a risk assessment performed in the context of the cryogenic liquid spills (e.g., LNG) depends on the accurate estimation of the vapor formation due to heat transfer from the ground. During an accidental spill, cryogenic liquids undergo different boiling regimes, from initial film boiling to nucleate boiling via a short living transition regime. At the early stage of the spill, the temperature difference between the liquid and the ground is relatively large; therefore the boiling is expected to fall in the film boiling regime. Thus for an accurate estimation of spill consequences and the simulation of pool spreading, film boiling simulation for cryogenic liquid is very important but unfortunately not trivial. This paper discusses the use of computational fluid dynamic (CFD) approach for the simulation of film boiling of a cryogenic liquid and provides a general guideline to simulate film boiling using a commercial CFD software package ANSYS-FLUENT.

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