Modelling the vaporization of cryogenic liquid spilled on the ground considering different boiling phenomena

Yi Liu, Xiaodan Gao, Tomasz Olewski, Luc Vechot, M. Sam Mannan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The formation of a vapor cloud following the spill of cryogenic hazardous liquid on ground presents significant fire or toxic hazards. Predicting the evaporation rate is central for risk assessment purpose to estimate the consequences of the cryogenic liquid spill. Numerical simulation is performed to study the heat transfer from the ground to the liquid pool during the vaporization process. Sensitivity analysis is carried out and a set of optimized simulation parameters with a domain size of 0.2 m, a space resolution of 0.2 mm, and a time resolution of 20 ms is chosen. The effect of different boiling modes on the heat transfer is further studied using a boiling curve to specify the boundary condition. Three different boiling stages - film boiling, transition boiling and nucleate boiling - are identified. The heat flux across the ground surface to the liquid pool is discussed during the whole cooling process following the cryogenic liquid spill on the ground. The ability of this numerical model to consider complex boiling phenomena is encouraging as its further development would potentially provide an accurate description of the source term model of vapor formation during cryogenic liquid spill.

Original languageEnglish
Title of host publication23rd Institution of Chemical Engineers Symposium on Hazards 2012, HAZARDS 2012
Pages289-296
Number of pages8
Edition158
Publication statusPublished - 1 Dec 2012
Event23rd Institution of Chemical Engineers Symposium on Hazards 2012, HAZARDS 2012 - Southport, United Kingdom
Duration: 12 Nov 201215 Nov 2012

Publication series

NameInstitution of Chemical Engineers Symposium Series
Number158
ISSN (Print)0307-0492

Other

Other23rd Institution of Chemical Engineers Symposium on Hazards 2012, HAZARDS 2012
CountryUnited Kingdom
CitySouthport
Period12/11/1215/11/12

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Keywords

  • Boiling
  • Cryogenic liquid
  • Heat conduction
  • LNG
  • Source term model
  • Vaporization

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Liu, Y., Gao, X., Olewski, T., Vechot, L., & Mannan, M. S. (2012). Modelling the vaporization of cryogenic liquid spilled on the ground considering different boiling phenomena. In 23rd Institution of Chemical Engineers Symposium on Hazards 2012, HAZARDS 2012 (158 ed., pp. 289-296). (Institution of Chemical Engineers Symposium Series; No. 158).