Effects of Channel Wall Twisting on the Mixing in a T-Shaped Micro-Channel
A new design scheme is proposed for twisting the walls of a microchannel, and its performance is demonstrated numerically. The numerical study was carried out for a T-shaped microchannel with twist angles in the range of 0 to 34π. The Reynolds number range was 0.15 to 6. The T-shaped microc...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-12-01
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| Series: | Micromachines |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-666X/11/1/26 |
| _version_ | 1819052366467432448 |
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| author | Dong Jin Kang |
| author_facet | Dong Jin Kang |
| author_sort | Dong Jin Kang |
| collection | DOAJ |
| description | A new design scheme is proposed for twisting the walls of a microchannel, and its performance is demonstrated numerically. The numerical study was carried out for a T-shaped microchannel with twist angles in the range of 0 to 34π. The Reynolds number range was 0.15 to 6. The T-shaped microchannel consists of two inlet branches and an outlet branch. The mixing performance was analyzed in terms of the degree of mixing and relative mixing cost. All numerical results show that the twisting scheme is an effective way to enhance the mixing in a T-shaped microchannel. The mixing enhancement is realized by the swirling of two fluids in the cross section and is more prominent as the Reynolds number decreases. The twist angle was optimized to maximize the degree of mixing (DOM), which increases with the length of the outlet branch. The twist angle was also optimized in terms of the relative mixing cost (MC). The two optimum twisting angles are generally not coincident. The optimum twist angle shows a dependence on the length of the outlet branch but it is not affected much by the Reynolds number. |
| first_indexed | 2024-12-21T12:18:42Z |
| format | Article |
| id | doaj.art-acd95fe895a74377ae1adb7bf241aa16 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-12-21T12:18:42Z |
| publishDate | 2019-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-acd95fe895a74377ae1adb7bf241aa162022-12-21T19:04:23ZengMDPI AGMicromachines2072-666X2019-12-011112610.3390/mi11010026mi11010026Effects of Channel Wall Twisting on the Mixing in a T-Shaped Micro-ChannelDong Jin Kang0School of Mechanical Engineering, Yeungnam University, Daehak-ro 280, Gyungsan 712-749, KoreaA new design scheme is proposed for twisting the walls of a microchannel, and its performance is demonstrated numerically. The numerical study was carried out for a T-shaped microchannel with twist angles in the range of 0 to 34π. The Reynolds number range was 0.15 to 6. The T-shaped microchannel consists of two inlet branches and an outlet branch. The mixing performance was analyzed in terms of the degree of mixing and relative mixing cost. All numerical results show that the twisting scheme is an effective way to enhance the mixing in a T-shaped microchannel. The mixing enhancement is realized by the swirling of two fluids in the cross section and is more prominent as the Reynolds number decreases. The twist angle was optimized to maximize the degree of mixing (DOM), which increases with the length of the outlet branch. The twist angle was also optimized in terms of the relative mixing cost (MC). The two optimum twisting angles are generally not coincident. The optimum twist angle shows a dependence on the length of the outlet branch but it is not affected much by the Reynolds number.https://www.mdpi.com/2072-666X/11/1/26t-shaped microchanneldegree of mixingtwisting angle |
| spellingShingle | Dong Jin Kang Effects of Channel Wall Twisting on the Mixing in a T-Shaped Micro-Channel Micromachines t-shaped microchannel degree of mixing twisting angle |
| title | Effects of Channel Wall Twisting on the Mixing in a T-Shaped Micro-Channel |
| title_full | Effects of Channel Wall Twisting on the Mixing in a T-Shaped Micro-Channel |
| title_fullStr | Effects of Channel Wall Twisting on the Mixing in a T-Shaped Micro-Channel |
| title_full_unstemmed | Effects of Channel Wall Twisting on the Mixing in a T-Shaped Micro-Channel |
| title_short | Effects of Channel Wall Twisting on the Mixing in a T-Shaped Micro-Channel |
| title_sort | effects of channel wall twisting on the mixing in a t shaped micro channel |
| topic | t-shaped microchannel degree of mixing twisting angle |
| url | https://www.mdpi.com/2072-666X/11/1/26 |
| work_keys_str_mv | AT dongjinkang effectsofchannelwalltwistingonthemixinginatshapedmicrochannel |