2008•TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series BOpen access

A Study on Micromixing Process Utilizing Gas-Liquid Free Interface

Naoki Ono, Tsuyoshi SUZUMURA

Abstract

We propose a new micromixing process utilizing gas-liquid free interface. This new process enhances mixing by narrowing and winding flow due to the existence of bubbles. Moreover, because shear stress does not work on gas-liquid free interface, this process will reduce pressure drop. Through flow experiment and CFD analysis, we compared the mixing performance of the new micromixer with that of conventional Y flow micromixer. The experimental result proved that the new micromixer can promote more mixing than Y flow micromixer. Furthermore, the CFD analysis revealed that the new micromixer can reduce pressure drop.

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Key concepts: Micromixer, Micromixing, Mixing (physics), Pressure drop, Materials science, Computational fluid dynamics, Mechanics, Flow (mathematics)