Novel Variable Radius Spiral–Shaped Micromixer: From Numerical Analysis to Experimental Validation
A novel type of spiral micromixer with expansion and contraction parts is presented in order to enhance the mixing quality in the low Reynolds number regimes for point-of-care tests (POCT). Three classes of micromixers with different numbers of loops and modified geometries were studied. Numerical s...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-10-01
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| Series: | Micromachines |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-666X/9/11/552 |
| _version_ | 1818285202997248000 |
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| author | Pouya Mehrdel Shadi Karimi Josep Farré-Lladós Jasmina Casals-Terré |
| author_facet | Pouya Mehrdel Shadi Karimi Josep Farré-Lladós Jasmina Casals-Terré |
| author_sort | Pouya Mehrdel |
| collection | DOAJ |
| description | A novel type of spiral micromixer with expansion and contraction parts is presented in order to enhance the mixing quality in the low Reynolds number regimes for point-of-care tests (POCT). Three classes of micromixers with different numbers of loops and modified geometries were studied. Numerical simulation was performed to study the flow behavior and mixing performance solving the steady-state Navier⁻Stokes and the convection-diffusion equations in the Reynolds range of 0.1⁻10.0. Comparisons between the mixers with and without expansion parts were made to illustrate the effect of disturbing the streamlines on the mixing performance. Image analysis of the mixing results from fabricated micromixers was used to verify the results of the simulations. Since the proposed mixer provides up to 92% of homogeneity at <i>Re</i> 1.0, generating 442 Pa of pressure drop, this mixer makes a suitable candidate for research in the POCT field. |
| first_indexed | 2024-12-13T01:04:57Z |
| format | Article |
| id | doaj.art-238fa277ac694094af96d37d4f5b7f13 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-12-13T01:04:57Z |
| publishDate | 2018-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-238fa277ac694094af96d37d4f5b7f132022-12-22T00:04:34ZengMDPI AGMicromachines2072-666X2018-10-0191155210.3390/mi9110552mi9110552Novel Variable Radius Spiral–Shaped Micromixer: From Numerical Analysis to Experimental ValidationPouya Mehrdel0Shadi Karimi1Josep Farré-Lladós2Jasmina Casals-Terré3Mechanical Engineering Department—MicroTech Lab., Universitat Politècnica de Catalunya, Colom 7-11 08222 Terrassa, Barcelona, SpainMechanical Engineering Department—MicroTech Lab., Universitat Politècnica de Catalunya, Colom 7-11 08222 Terrassa, Barcelona, SpainMechanical Engineering Department—MicroTech Lab., Universitat Politècnica de Catalunya, Colom 7-11 08222 Terrassa, Barcelona, SpainMechanical Engineering Department—MicroTech Lab., Universitat Politècnica de Catalunya, Colom 7-11 08222 Terrassa, Barcelona, SpainA novel type of spiral micromixer with expansion and contraction parts is presented in order to enhance the mixing quality in the low Reynolds number regimes for point-of-care tests (POCT). Three classes of micromixers with different numbers of loops and modified geometries were studied. Numerical simulation was performed to study the flow behavior and mixing performance solving the steady-state Navier⁻Stokes and the convection-diffusion equations in the Reynolds range of 0.1⁻10.0. Comparisons between the mixers with and without expansion parts were made to illustrate the effect of disturbing the streamlines on the mixing performance. Image analysis of the mixing results from fabricated micromixers was used to verify the results of the simulations. Since the proposed mixer provides up to 92% of homogeneity at <i>Re</i> 1.0, generating 442 Pa of pressure drop, this mixer makes a suitable candidate for research in the POCT field.https://www.mdpi.com/2072-666X/9/11/552point-of-carepassive mixermicromixerspiral micromixermixing |
| spellingShingle | Pouya Mehrdel Shadi Karimi Josep Farré-Lladós Jasmina Casals-Terré Novel Variable Radius Spiral–Shaped Micromixer: From Numerical Analysis to Experimental Validation Micromachines point-of-care passive mixer micromixer spiral micromixer mixing |
| title | Novel Variable Radius Spiral–Shaped Micromixer: From Numerical Analysis to Experimental Validation |
| title_full | Novel Variable Radius Spiral–Shaped Micromixer: From Numerical Analysis to Experimental Validation |
| title_fullStr | Novel Variable Radius Spiral–Shaped Micromixer: From Numerical Analysis to Experimental Validation |
| title_full_unstemmed | Novel Variable Radius Spiral–Shaped Micromixer: From Numerical Analysis to Experimental Validation |
| title_short | Novel Variable Radius Spiral–Shaped Micromixer: From Numerical Analysis to Experimental Validation |
| title_sort | novel variable radius spiral shaped micromixer from numerical analysis to experimental validation |
| topic | point-of-care passive mixer micromixer spiral micromixer mixing |
| url | https://www.mdpi.com/2072-666X/9/11/552 |
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