Flow Control Through the Use of Topography

In this work, optimal shaft shapes for flow in the annular space between a rotating shaft with axially-periodic radius and a fixed coaxial outer circular cylinder, are investigated. Axisymmetric steady flows in this geometry are determined by solving the full Navier-Stokes equations in the actual do...

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Detalles Bibliográficos
Autores principales: Cotrell, D. L., Kearsley, A. J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2007
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4656003/
https://www.ncbi.nlm.nih.gov/pubmed/27110462
http://dx.doi.org/10.6028/jres.112.012
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author Cotrell, D. L.
Kearsley, A. J.
author_facet Cotrell, D. L.
Kearsley, A. J.
author_sort Cotrell, D. L.
collection PubMed
description In this work, optimal shaft shapes for flow in the annular space between a rotating shaft with axially-periodic radius and a fixed coaxial outer circular cylinder, are investigated. Axisymmetric steady flows in this geometry are determined by solving the full Navier-Stokes equations in the actual domain. A measure of the flow field, a weighted convex combination of the volume averaged square of the L(2)-norm of the velocity and vorticity vectors, is employed. It has been demonstrated that boundary shape can be used to influence the characteristics of the flow field, such as its velocity component distribution, kinetic energy, or even vorticity. This ability to influence flow fields through boundary shape may be employed to improve microfluidic mixing or, possibly, to minimize shear in biological applications.
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spelling pubmed-46560032016-04-22 Flow Control Through the Use of Topography Cotrell, D. L. Kearsley, A. J. J Res Natl Inst Stand Technol Article In this work, optimal shaft shapes for flow in the annular space between a rotating shaft with axially-periodic radius and a fixed coaxial outer circular cylinder, are investigated. Axisymmetric steady flows in this geometry are determined by solving the full Navier-Stokes equations in the actual domain. A measure of the flow field, a weighted convex combination of the volume averaged square of the L(2)-norm of the velocity and vorticity vectors, is employed. It has been demonstrated that boundary shape can be used to influence the characteristics of the flow field, such as its velocity component distribution, kinetic energy, or even vorticity. This ability to influence flow fields through boundary shape may be employed to improve microfluidic mixing or, possibly, to minimize shear in biological applications. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2007 2007-06-01 /pmc/articles/PMC4656003/ /pubmed/27110462 http://dx.doi.org/10.6028/jres.112.012 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Cotrell, D. L.
Kearsley, A. J.
Flow Control Through the Use of Topography
title Flow Control Through the Use of Topography
title_full Flow Control Through the Use of Topography
title_fullStr Flow Control Through the Use of Topography
title_full_unstemmed Flow Control Through the Use of Topography
title_short Flow Control Through the Use of Topography
title_sort flow control through the use of topography
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4656003/
https://www.ncbi.nlm.nih.gov/pubmed/27110462
http://dx.doi.org/10.6028/jres.112.012
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AT kearsleyaj flowcontrolthroughtheuseoftopography

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