Numerical study of microfluidic emulsion in T-junction
碩士 === 國立中興大學 === 機械工程學系所 === 97 === This paper reports numerical results of droplet generation through a microchannel having a T-shape junction with uniform cross sections of 50 um×50 um and 100 um×100 um. Oil (Continuous phase) and water (Dispersed phase) are injected into the T-junction inlets to...
| Main Authors: | , |
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| Format: | Others |
| Language: | zh-TW |
| Online Access: | http://ndltd.ncl.edu.tw/handle/21975707912404951828 |
| Summary: | 碩士 === 國立中興大學 === 機械工程學系所 === 97 === This paper reports numerical results of droplet generation through a microchannel having a T-shape junction with uniform cross sections of 50 um×50 um and 100 um×100 um. Oil (Continuous phase) and water (Dispersed phase) are injected into the T-junction inlets to form water-in-oil emulsions for velocities ranging from Uc = 0.033 – 0.161 m/s and Ud = 0.002 – 0.041 m/s, respectively. The volume of fluid scheme was employed in the simulations to identify the oil-water interface. In the preset velocity ranges, the ratio of droplet diameter to channel hydraulic diameter appears to be nearly 0.8±0.3. Further comparisons show that the droplet diameter and production rate may correlated with the velocity ratio Uc(Uc/Ud)0.5 as a power law. It is found that the droplet generation frequency can reach as much as 3790 s-1 for the narrower channel while the frequency for the wider channel is at 2225 s-1.
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