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The defense date of the thesis is 2012-09-08
The current date is 2019-07-20
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URN etd-0908112-011827 Statistics This thesis had been viewed 1400 times. Download 5 times. Author Pei-chun Chao Author's Email Address No Public. Department Mechanical Engineering Year 2011 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 84 Title The mixing efficiency on the active planar electrode microfluidic mixing chip Keyword nozzle effect active mixer passive mixer circular micro-channel circular micro-channel passive mixer active mixer nozzle effect Abstract In this thesis, we demonstrated the possibility of active mixer improved to passive mixer thesis with structure from traditional Circular Micro-channel improvement. Furthermore, from structure design to prove thesis, the main evaluation of method is to change the Reynolds number of fluid, increasing contacting space in channel to improve mixing efficiency of mixer. with nozzle effect happened, the fluid’s speed will increase immediately in channel and produce vortex to raise mixing efficiency of mixer. Base on COMSOL Multiphysics system did evaluation and counting for deep discussing of efficiency of mixer which influence of changing structure method.
After search and evaluation in this thesis, improved active nozzle effect circle structure mixer can have excellent mixing efficiency, with no any abundant in channel, mixing efficiency in micro-channel raise from 74.06% to 88.5%. In addition, this thesis uses evaluation system to do others channel structure comparison, and changes the same parameter to check. The result is improved nozzle effect can achieve the most effective path. From the evaluated method in this thesis, this new channel structure design will have advantage for related micro-channel mixer.
Advisor Committee Che-Hung Wei - advisor
none - co-chair
none - co-chair
Files Date of Defense 2012-07-24 Date of Submission 2012-09-08