Numerical Study of the Valveless Micropump and Pulsatile Flow Mixer
Date Issued
2006
Date
2006
Author(s)
Tsai, Jeng-Tsun
DOI
zh-TW
Abstract
We use the CFDRC software to do the research about the
valveless micro-pump which is by means of asymmetric
obstacles to control the direction and the volume flow
rate of the flow. The design can be taken as a mechanical
valveless micro-pump driven by a piezo film. We also
study about the mixer using time pulsing flows. We
illustrate the technique by studying mixing in a simple
channel which contains obstacles as well as physically
mixing two aqueous reagents.
After analyzing the results, We can obtain some
conclusions. If we change the size of the narrowest part
of the channel, it will has a greater effect for the
volume flow rate of the flow than if we change the
curvature of the angle of the obstacle. It can improve the
volume flow rate of the flow by means of changing the
ratio of time for puming mode and suction mode of the
pump. We also disscuss mixing effeciency about several
different 2D flow. We get the fact that time pulsing flows
with a obstacle have a great improvement about the mixing
effeciency. Furthermore, we changed Reynolds number and
Strohul number to observe the mixing efficiency. We get
the best mixing contion for the mixer is Re=0.5 and
St=19.2.
Subjects
無閥門
微幫浦
擋體
脈衝流
混合器
valve-less
valveless
micropump
valveless pump,pulsatile flow
mixer
Type
thesis
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