Fluidic device

摘要

A fluidic device (12) is provided which forms a precisely concentric flow and is manufactured at a low cost. The fluidic device (12) has a two tube structure including an outer larger diameter circular tube (30) and an inner smaller diameter circular tube (32), with a circular annular space (34) provided therebetween in which a plurality of centering circular tubes (36) are closely displaced. A fluid L1 is supplied in the smaller diameter circular tube (32), and a fluid L2 is supplied in the annular space (34) or the plurality of centering circular tubes (36). This allows a precisely concentric double-layer flow to be formed.