マイクロ流路内の流体混合反応に与える振動の効果(流体工学,流体機械)

概要

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The effects of mechanical vibration on fluid mixing and chemical reaction in a micro channel were experimentally investigated. The fluids before flowing into the micro channel were mechanically oscillated through the inlet tubes by using a small vibrating motor. Instantaneous velocity and concentration in the micro channel were measured using the micro PIV (Particle Image velocimetry) and LIF (Laser Induced Fluorescence), respectively. The results show that fluid mixing and chemical reaction is remarkably promoted by the vibrating technique. The mixing rate is well correlated with the streamwise fluid velocity fluctuation. When the basic frequency of the vibrating tube is lower than about 20Hz, the fluid motion hardly changes and the mixing is little enhanced. However, the fluid intensively fluctuates for the higher frequency than 75Hz and almost complete mixing accomplished.
2005-03-25