A new index for precise design and advanced operation of mass transfer in slug flow

Nobuaki Aoki, Shin Tanigawa, Kazuhiro Mae

    Research output: Contribution to journalArticlepeer-review

    43 Citations (Scopus)


    Slug flow, one of the ordered multi-phase flow patterns in a small channel, has the advantage of the enhancement of mixing in each phase and mass transfer between two phases due to the internal circulation flow. To form stable slug flow, the throughput of order of μLmin-1 has been employed. To use slug flow in industrial scale, however, controlled and high throughput mass transfer and an index for design of a channel with slug flow are required. To address this requirement, we examined the influences of operating conditions such as the channel size and the flow rate on flow patterns and the mass transfer rate. Based on the experimental results, we derived an index to represent the mass transfer rate in slug flow. For further improvement of mass transfer in slug flow, we also verified that the channel including a sudden expansion improves the mass transfer efficiency.

    Original languageEnglish
    Pages (from-to)651-656
    Number of pages6
    JournalChemical Engineering Journal
    Issue number2-3
    Publication statusPublished - 2011 Mar 1


    • Internal circulation flow
    • Mass transfer
    • Microchannel
    • Slug flow
    • Sudden expansion

    ASJC Scopus subject areas

    • Chemistry(all)
    • Environmental Chemistry
    • Chemical Engineering(all)
    • Industrial and Manufacturing Engineering


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