Active laminar mixing induced by surface disturbance

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dc.contributor.author Akle, Barbar
dc.contributor.author Williams, Alicia
dc.contributor.author Vlachos, Pavlos
dc.date.accessioned 2018-01-22T10:23:42Z
dc.date.available 2018-01-22T10:23:42Z
dc.date.copyright 2006 en_US
dc.date.issued 2018-01-22
dc.identifier.isbn 0-7918-4750-0 en_US
dc.identifier.uri http://hdl.handle.net/10725/6924
dc.description.abstract Traditionally, passive mixers and chaotic advection have played a key role in the field of microfluidics by stretching and folding the fluid. Some examples of these passive mixing techniques include channels with riblets or grooves on the walls, or serpentine curved channels. In this work, we explore an actuated wall for use as a closed-chamber micromixer. Although active mixers for low Reynolds number flows have been previously studied, a significant portion of that work has involved piezoelectrics. This work presents a novel polymer that offers many advantages over conventional piezoelectric stacks, including very small thickness and inexpensive construction cost. Moreover, these actuators are water-based, eliminating the need for coating or electrical isolation. The polymer used to create this moving boundary or “active skin” is a flexible surface that deforms mechanically in response to an electrical signal. This was accomplished with a polymer that was approximately 560 mm2 divided into nine sections. Every other section of the polymer was wired to actuate simultaneously under the influence of an applied voltage cycling between 1 and 70 hertz with a 2 volt amplitude. The flow over the active skin was measured via TRDPIV (Time Resolved Digital Particle Image Velocimetry) using an Nd:YAG laser. The result of this research indicates that flow stirring is generated by the use of an active skin. Moreover, even though the deflection of the polymer is on the order of microns, its influence extends to the entire area of the channel studied in this work (approximately 13 mm height and 43 mm length). en_US
dc.language.iso en en_US
dc.publisher ASME en_US
dc.title Active laminar mixing induced by surface disturbance en_US
dc.type Conference Paper / Proceeding en_US
dc.author.school SOE en_US
dc.author.idnumber 200700940 en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.embargo N/A en_US
dc.keywords Flow (Dynamics) en_US
dc.keywords Electric potential en_US
dc.keywords Fluids en_US
dc.keywords Channels (Hydraulic engineering) en_US
dc.keywords Coating processes en_US
dc.keywords Coatings en_US
dc.keywords Particulate matter en_US
dc.keywords Reynolds number en_US
dc.keywords Nd-YAG lasers en_US
dc.keywords Construction en_US
dc.identifier.doi http://dx.doi.org/10.1115/FEDSM2006-98123 en_US
dc.identifier.ctation Williams, A., Akle, B., & Vlachos, P. (2006, January). Active Laminar Mixing Induced by Surface Disturbance. In ASME 2006 2nd Joint US-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering (pp. 1077-1085). American Society of Mechanical Engineers. en_US
dc.author.email barbar.akle@lau.edu.lb en_US
dc.conference.date July 17–20, 2006 en_US
dc.conference.pages 1077-1085 en_US
dc.conference.place Miami, Florida, USA en_US
dc.conference.title ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineerin en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1599283 en_US
dc.author.affiliation Lebanese American University en_US

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