Fast numerical simulation for full bore rupture of pressurized pipelines

Haroun Mahgerefteh, Pratik Saha, Ioannis Economou

Research output: Contribution to journalArticle

42 Citations (Scopus)


An efficient numerical simulation (CNGS-MOC), based on the method of characteristics for simulating full bore rupture of long pipelines containing two-phase hydrocarbons, was developed. The use of curved characteristics, in conjunction with a compound nested grid system, as well as a fast mathematical algorithm, lead to a significant reduction of CPU time, while improving accuracy. The model is validated extensively against field data including those obtained during the Piper Alpha tragedy, as well as the Isle of Grain depressurization tests. Its predictions are compared with those based on other mathematical models including PLAC, META-HEM, MSM-CS, as well as BLOWDOWN. Both CNGS-MOC and META-HEM produce reasonably accurate predictions with the remaining models assessed performing relatively poorly.

Original languageEnglish
Pages (from-to)1191-1201
Number of pages11
JournalAICHE Journal
Issue number6
Publication statusPublished - Jun 1999
Externally publishedYes


ASJC Scopus subject areas

  • Biotechnology
  • Environmental Engineering
  • Chemical Engineering(all)

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