Computational Characterization of Turbulent Flow in a Microfluidic Actuator
In this contribution, an unsteady numerical simulation of the flow in a microfluidic oscillator has been performed. The transient turbulent flow inside the device is described by the Unsteady Reynolds Averaged Navier–Stokes equations (URANS) coupled with proper turbulence models. The main characteri...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/7/3589 |
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| author | Santiago Laín Jaime H. Lozano-Parada Javier Guzmán |
| author_facet | Santiago Laín Jaime H. Lozano-Parada Javier Guzmán |
| author_sort | Santiago Laín |
| collection | DOAJ |
| description | In this contribution, an unsteady numerical simulation of the flow in a microfluidic oscillator has been performed. The transient turbulent flow inside the device is described by the Unsteady Reynolds Averaged Navier–Stokes equations (URANS) coupled with proper turbulence models. The main characteristics of the complex fluid flow inside the device along one oscillation cycle was analyzed in detail, including not only velocity contours but also the pressure and turbulent kinetic energy fields. As a result, two-dimensional simulations provided good estimations of the operating frequency of the fluidic actuator when compared with experimental measurements in a range of Reynolds numbers. Moreover, with the objective of altering the operating frequency of the apparatus and, in order to adapt it to different applications, geometrical modifications of the feedback channels were proposed and evaluated. Finally, a fully three-dimensional simulation was carried out, which allowed for the identification of intricate coherent structures revealing the complexity of the turbulent flow dynamics inside the fluidic oscillator. |
| first_indexed | 2024-03-09T12:05:27Z |
| format | Article |
| id | doaj.art-3340a2aa636d444daadf55738fcf95bb |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T12:05:27Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-3340a2aa636d444daadf55738fcf95bb2023-11-30T22:57:50ZengMDPI AGApplied Sciences2076-34172022-04-01127358910.3390/app12073589Computational Characterization of Turbulent Flow in a Microfluidic ActuatorSantiago Laín0Jaime H. Lozano-Parada1Javier Guzmán2PAI + Research Group, Universidad Autónoma de Occidente, Calle 25 No 115-85, Cali 760030, ColombiaPAI + Research Group, Universidad Autónoma de Occidente, Calle 25 No 115-85, Cali 760030, ColombiaPAI + Research Group, Universidad Autónoma de Occidente, Calle 25 No 115-85, Cali 760030, ColombiaIn this contribution, an unsteady numerical simulation of the flow in a microfluidic oscillator has been performed. The transient turbulent flow inside the device is described by the Unsteady Reynolds Averaged Navier–Stokes equations (URANS) coupled with proper turbulence models. The main characteristics of the complex fluid flow inside the device along one oscillation cycle was analyzed in detail, including not only velocity contours but also the pressure and turbulent kinetic energy fields. As a result, two-dimensional simulations provided good estimations of the operating frequency of the fluidic actuator when compared with experimental measurements in a range of Reynolds numbers. Moreover, with the objective of altering the operating frequency of the apparatus and, in order to adapt it to different applications, geometrical modifications of the feedback channels were proposed and evaluated. Finally, a fully three-dimensional simulation was carried out, which allowed for the identification of intricate coherent structures revealing the complexity of the turbulent flow dynamics inside the fluidic oscillator.https://www.mdpi.com/2076-3417/12/7/3589computational fluid dynamics (CFD) numerical simulation2D and 3D unsteady analysisfluidic actuatorturbulent flow |
| spellingShingle | Santiago Laín Jaime H. Lozano-Parada Javier Guzmán Computational Characterization of Turbulent Flow in a Microfluidic Actuator Applied Sciences computational fluid dynamics (CFD) numerical simulation 2D and 3D unsteady analysis fluidic actuator turbulent flow |
| title | Computational Characterization of Turbulent Flow in a Microfluidic Actuator |
| title_full | Computational Characterization of Turbulent Flow in a Microfluidic Actuator |
| title_fullStr | Computational Characterization of Turbulent Flow in a Microfluidic Actuator |
| title_full_unstemmed | Computational Characterization of Turbulent Flow in a Microfluidic Actuator |
| title_short | Computational Characterization of Turbulent Flow in a Microfluidic Actuator |
| title_sort | computational characterization of turbulent flow in a microfluidic actuator |
| topic | computational fluid dynamics (CFD) numerical simulation 2D and 3D unsteady analysis fluidic actuator turbulent flow |
| url | https://www.mdpi.com/2076-3417/12/7/3589 |
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