Application of pressure-sensitive paint for the characterization of mixing with various gases in T-type micromixers

Chih Yung Huang, Yu Hsiang Hu, Shaw An Wan, Hiroki Nagai

Research output: Contribution to journalArticle

Abstract

In this study, the mixing of various gases in T-type micromixers was investigated using the pressure-sensitive paint technique. Three gases, namely nitrogen, argon, and helium, were mixed with oxygen at various flow speeds between 3 and 50 m/s. These three gases were selected because of their differences in terms of density, viscosity, and diffusion coefficients. Symmetric flow in the laminar flow regime and bifurcation flow in the engulfment flow regime were visualized through experimentation. Numerical simulation was also performed, and the numerical data were compared with the experimental data. A favorable agreement was obtained between the experimental and numerical results for the laminar flow regime. The effects of the properties of the mixed gases as well as the evolution of the mixing quality along the mixing channel in the T-type micromixer are discussed.

Original languageEnglish
Article number119710
JournalInternational Journal of Heat and Mass Transfer
Volume156
DOIs
Publication statusPublished - 2020 Aug

Keywords

  • Density
  • Diffusion
  • Gas mixing
  • Micromixer
  • Pressure-sensitive paint
  • Viscosity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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