An investigation of pressure transients in pipelines with two‐phase bubbly flow

Kim Choon NG*, C. Yap

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


This paper presents a two‐dimensional model for the analysis of the pressure transient of a two‐phase homogeneous bubbly mixture flowing in a pipeline and the numerical integration using the centre implicit method (CIM). Experiments were conducted to confirm the proposed sonic speed equation of an air–water mixture for an air concentration of less than 1%. The 2D CIM model is compared with the method of characteristics (MoC) for a two‐phase bubbly flow in a pipeline. The comparisons show that the proposed 2D CIM model generally gives good agreement with the method of characteristics.

Original languageEnglish (US)
Pages (from-to)1207-1219
Number of pages13
JournalInternational Journal for Numerical Methods in Fluids
Issue number10
StatePublished - Jan 1 1989


  • Bubbly pipe flow
  • Centre implicit method
  • Pressure transients
  • Two‐phase pipe flow

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Mechanical Engineering
  • Computer Science Applications
  • Applied Mathematics


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