Passive Mixing: Hydrodynamic focusing

Introduction

Hydrodynamic focusing is utilizing a focusing stream to confine or reduce a flowing stream. This can be used to help focus a stream or for mixing purposes. Hydrodynamic focusing is passive mixing because it requires no external forces. The focusing stream usually has a higher flowrate which confines the focused stream and pushes it to an area of lower pressure[1].

[math]\displaystyle{ Re=ρυD\lt sub\gt h\lt sub\gt /μ }[/math]

[math]\displaystyle{ L=2(Dt)^.5 }[/math]

Flow Cytommetry

References [1]