Generation and Manipulation of Droplet Emulsions at the T-junction in Microfluidic Channels
碩士 === 國立中興大學 === 機械工程學系所 === 96 === Abstract This study examines the emulsification of oil-in-water microdroplet in the microfluidics with a T-junction. The flow visualization technique was adopted to observe the dependence of droplet size and generation frequency upon the dispersed and continuous...
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| Format: | Others |
| Language: | zh-TW |
| Online Access: | http://ndltd.ncl.edu.tw/handle/74780860723735570032 |
| Summary: | 碩士 === 國立中興大學 === 機械工程學系所 === 96 === Abstract
This study examines the emulsification of oil-in-water microdroplet in the microfluidics with a T-junction. The flow visualization technique was adopted to observe the dependence of droplet size and generation frequency upon the dispersed and continuous phase flow rates as well as the channel dimension. The microflidics allows one to control the size of droplet emulsion from 100 to 600 μm in diameter with a mean percentage error less than 3%. It is found that the droplet size increases with increasing dispersed phase flow rate but decreases with increasing continuous phase flow rate. It is also found that a wider continuous channel can generate larger droplet. As a result, the droplet size decreases with increasing capillary number and increases with increasing ratio of the dispersed and continuous phase flow rates. On the other hand, the droplet generation frequency decreases with increasing ratio of the dispersed and continuous phase flow rates.
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