Numerical analysis of homogeneous condensation in rarefaction wave in a shock tube by the space-time CESE method

Wan Cheng, Xisheng Luo*, Jiming Yang, Ge Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

A detailed numerical investigation has been carried out for the homogeneous condensation of water vapor in a non-stationary rarefaction wave generated in a shock tube. The space-time CESE method has been adopted to simulate the mutual interaction of condensation with the rarefaction wave for an extremely long time. It is found that the homogeneous condensation in the rarefaction wave has a significant influence on the flow due to the latent heat release and the continuous change of cooling rate. Three stages can be defined in this process: the initial stage which contains the onset of the condensation and the formation of the condensation shock waves in both downstream and upstream directions, the oscillating stage which is characterized as the repeat of quench and onset of condensation in the expansion fan approximately in a logarithm time manner, and the asymptotic stage which the oscillating waves are damping out with time and no apparent condensation shock wave is formed.

Original languageEnglish (US)
Pages (from-to)294-300
Number of pages7
JournalComputers and Fluids
Volume39
Issue number2
DOIs
StatePublished - Feb 1 2010

ASJC Scopus subject areas

  • Computer Science(all)
  • Engineering(all)

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