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Erschienen in: Microsystem Technologies 8/2018

20.02.2018 | Technical Paper

Numerical and experimental investigations on the performance of a serpentine microchannel with semicircular obstacles

verfasst von: Sandeep Sitaram Wangikar, Promod Kumar Patowari, Rahul Dev Misra

Erschienen in: Microsystem Technologies | Ausgabe 8/2018

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Abstract

This paper focuses on computational and experimental analysis of a simple serpentine microchannel without obstacles and serpentine microchannel with semicircular obstacles of different sizes. The work has been performed in three phases- computational analysis, experimentation and flow physics study. The 3D models of a simple serpentine microchannel (without obstacles) and serpentine microchannels with semicircular obstacles (with radius as 50, 100, 150 and 200 µm) have been developed using COMSOL Multiphysics software. The effect of obstacle size on pressure drop and mixing length for achieving index 1 has been analyzed. A simple serpentine qmicrochannel and a serpentine microchannel with 150 µm radius semicircular obstacles have been fabricated with polydimethylsiloxane using soft lithography process. The experimental analysis for pressure drop as well as mixing index has been performed. A good agreement has been observed between experimental and computational results. The validated computational model is then used to study the mixing index for the same microchannels for different flow conditions, i.e. for different Reynolds numbers. The mixing lengths are observed to be lesser for Re 0.28 and 30. Further, the effect of diffusion and generation of secondary flow due to advection on mixing length for the considered Reynolds numbers are analyzed through the flow physics study.

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Literatur
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Zurück zum Zitat Sarma P, Patowari PK (2016a) Design and analysis of passive Y-type micromixers for enhanced mixing performance for biomedical and microreactor application. J Adv Manuf Syst 15(03):161–172CrossRef Sarma P, Patowari PK (2016a) Design and analysis of passive Y-type micromixers for enhanced mixing performance for biomedical and microreactor application. J Adv Manuf Syst 15(03):161–172CrossRef
Zurück zum Zitat Sarma P, Patowari PK (2016b) Study on design modification of serpentine micromixers for better throughput for microfluidic circuitry. Micro Nanosyst 8(2):19–125 Sarma P, Patowari PK (2016b) Study on design modification of serpentine micromixers for better throughput for microfluidic circuitry. Micro Nanosyst 8(2):19–125
Zurück zum Zitat Yang JT, Lin KW (2006) Mixing and separation of two-fluid flow in a micro planar serpentine channel. J Micromech Microeng 16(11):2439CrossRef Yang JT, Lin KW (2006) Mixing and separation of two-fluid flow in a micro planar serpentine channel. J Micromech Microeng 16(11):2439CrossRef
Metadaten
Titel
Numerical and experimental investigations on the performance of a serpentine microchannel with semicircular obstacles
verfasst von
Sandeep Sitaram Wangikar
Promod Kumar Patowari
Rahul Dev Misra
Publikationsdatum
20.02.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
Microsystem Technologies / Ausgabe 8/2018
Print ISSN: 0946-7076
Elektronische ISSN: 1432-1858
DOI
https://doi.org/10.1007/s00542-018-3799-0

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