Investigating the effect of micro-riblets on the flow and micro-mixing behavior in micro-channel
Chaotic advection method is usually implemented to design any micro-mixing device, specifically micro-mixers, where the base or the top wide surface is structured for maximum mixing performance. This method comes with several drawbacks, such as the high-pressure drop caused by the structured inner s...
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| Format: | Article |
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Taylor & Francis
2020
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| _version_ | 1825813482948263936 |
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| author | Fiona Ling, Wang Ming Khleif, Ali A. Abdulbari, Hayder A. |
| author_facet | Fiona Ling, Wang Ming Khleif, Ali A. Abdulbari, Hayder A. |
| author_sort | Fiona Ling, Wang Ming |
| collection | UMP |
| description | Chaotic advection method is usually implemented to design any micro-mixing device, specifically micro-mixers, where the base or the top wide surface is structured for maximum mixing performance. This method comes with several drawbacks, such as the high-pressure drop caused by the structured inner surface. In the present work, V-shaped micro-riblets with the riblets size ranged between 20 and 100 µm are designed and structured on the side-walls of a rectangular T-shaped micro-mixers to test its mixing and flow enhancement performances at different flow rates for single and multiple phases flow. The micro-mixers were fabricated using a direct writing method with polydimethylsiloxane as a substrate. The flow and mixing behaviors of single and multiphase flow systems were investigated through monitoring the flow of the fluids flowing through the system using micro-Particle Image Velocimetry (µ-PIV). The results showed a flow enhancement up to ∼29% for a 60 µm of base-to-height riblet at an operating pressure of ∼200 mbar for a single-phase flow system. Larger micro-riblets were found to produce a thicker laminar sub-layer within the devices that narrowed the active core of the solution. When a two-phase flow system is introduced, the flow enhancement was observed in the water phase at operating pressure > 600 mbar and riblets dimension > 60 µm. On the other hand, the maximum mixing intensity of 52% was observed in 60 µm micro-riblets size indicating that the presence of micro-structure in the micro-mixer can enhance both the flow and mixing efficiency. |
| first_indexed | 2024-03-06T12:44:40Z |
| format | Article |
| id | UMPir29205 |
| institution | Universiti Malaysia Pahang |
| last_indexed | 2024-03-06T12:44:40Z |
| publishDate | 2020 |
| publisher | Taylor & Francis |
| record_format | dspace |
| spelling | UMPir292052020-09-04T06:52:25Z http://umpir.ump.edu.my/id/eprint/29205/ Investigating the effect of micro-riblets on the flow and micro-mixing behavior in micro-channel Fiona Ling, Wang Ming Khleif, Ali A. Abdulbari, Hayder A. TP Chemical technology Chaotic advection method is usually implemented to design any micro-mixing device, specifically micro-mixers, where the base or the top wide surface is structured for maximum mixing performance. This method comes with several drawbacks, such as the high-pressure drop caused by the structured inner surface. In the present work, V-shaped micro-riblets with the riblets size ranged between 20 and 100 µm are designed and structured on the side-walls of a rectangular T-shaped micro-mixers to test its mixing and flow enhancement performances at different flow rates for single and multiple phases flow. The micro-mixers were fabricated using a direct writing method with polydimethylsiloxane as a substrate. The flow and mixing behaviors of single and multiphase flow systems were investigated through monitoring the flow of the fluids flowing through the system using micro-Particle Image Velocimetry (µ-PIV). The results showed a flow enhancement up to ∼29% for a 60 µm of base-to-height riblet at an operating pressure of ∼200 mbar for a single-phase flow system. Larger micro-riblets were found to produce a thicker laminar sub-layer within the devices that narrowed the active core of the solution. When a two-phase flow system is introduced, the flow enhancement was observed in the water phase at operating pressure > 600 mbar and riblets dimension > 60 µm. On the other hand, the maximum mixing intensity of 52% was observed in 60 µm micro-riblets size indicating that the presence of micro-structure in the micro-mixer can enhance both the flow and mixing efficiency. Taylor & Francis 2020 Article PeerReviewed Fiona Ling, Wang Ming and Khleif, Ali A. and Abdulbari, Hayder A. (2020) Investigating the effect of micro-riblets on the flow and micro-mixing behavior in micro-channel. Chemical Engineering Communications. pp. 1-15. ISSN 1563-5201. (Published) https://doi.org/10.1080/00986445.2020.1715959 https://doi.org/10.1080/00986445.2020.1715959 |
| spellingShingle | TP Chemical technology Fiona Ling, Wang Ming Khleif, Ali A. Abdulbari, Hayder A. Investigating the effect of micro-riblets on the flow and micro-mixing behavior in micro-channel |
| title | Investigating the effect of micro-riblets on the flow and micro-mixing behavior in micro-channel |
| title_full | Investigating the effect of micro-riblets on the flow and micro-mixing behavior in micro-channel |
| title_fullStr | Investigating the effect of micro-riblets on the flow and micro-mixing behavior in micro-channel |
| title_full_unstemmed | Investigating the effect of micro-riblets on the flow and micro-mixing behavior in micro-channel |
| title_short | Investigating the effect of micro-riblets on the flow and micro-mixing behavior in micro-channel |
| title_sort | investigating the effect of micro riblets on the flow and micro mixing behavior in micro channel |
| topic | TP Chemical technology |
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