Mixing performance enhancement and parametric investigation of swirl-inlets split-and-recombine micromixer with pulsatile flow

Afzal Husain*, Nabeel Al-Rawahi, Nasser Al-Azri, Mohammad Zunaid, Mohd Zahid Ansari

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The current study develops a pulsatile flow micromixing model, and investigates the performance of swirl-inlets split-and-recombine micromixer. A three-dimensional transient flow numerical model solving Navier-Stokes and diffusion equation is prepared to model the species mixing in a microchannel. The effect of pulsatile flow parameters, i.e., Strouhal number, amplitude ratio, and phase difference, on mixing performance is investigated along with the nature and extent of performance enhancement. A significant improvement in the mixing index is observed with the application of pulsatile flow. The pulse phase difference was found to be the more effective parameter to enhance the mixing index compared to Strouhal number and amplitude ratios investigated in the present study.

Original languageEnglish
Pages (from-to)609-616
Number of pages8
JournalMaterials Today: Proceedings
Publication statusAccepted/In press - 2022


  • Micromixer
  • Mixing index
  • Pulsatile flow
  • Split-and-recombine
  • Strouhal number
  • Swirl-inlets

ASJC Scopus subject areas

  • Materials Science(all)

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