Mechanism of advective mixing in a non-elememt mixer

Sunho You, Yuusuke Sugikawa, Toshishisa Ueda

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Cross-sectional visualization of the mixing pattern in a non-element mixer was carried out using laser induced fluorescence (LIF) to evaluate characteristics of a mixer consisting of the main flow pipe and branch flow pipes. The branch flows were injected periodically with the period Tp normal to the main flow, and rhodamine B was mixed into the most upstream branch flow to visualize mixing pattern in the main flow pipe by LIF. The length of boundary line L of the LIF image, where molecular diffusion takes place, was measured. When the number of branch flows is increased, the mixing pattern became complicated and was supposed to become chaotic. The mean value of length of boundary line L increased exponentially with an increase in the number of branch flows, which indicates that L increases nonlinearly in the same way as in a Kenics type static mixer.

Original languageEnglish
Pages (from-to)357-363
Number of pages7
Issue number4
Publication statusPublished - 2009 Oct 22


  • Chaotic mixing
  • LIF
  • Non-element mixer
  • Temporal mixing

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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