Effects of surface profile on a boundary-driven acoustic streaming field
Effects of surface profile on a boundary-driven acoustic streaming field
Control of boundary-driven streaming in acoustofluidic systems is vital for various microfluidic applications either to generate it as a positive mechanism (e.g. microfluidic mixing, heat/mass transfer and fluid pumping) or suppressing it as an undesired disturbance (e.g. particle/cell focusing). It has been shown that two-dimensional (2D) and three-dimensional (3D) boundary-driven streaming can be solved from the limiting velocity method as long as the curvature of the surface is small compared to the viscous penetration depth. In this work, acoustic streaming fields in 2D rectangular enclosures that have structured textures, which do not satisfy this condition are numerically studied by full modelling of Reynolds stresses and the effects of surface profile amplitude on a boundary-driven acoustic streaming field are investigated. Specifically, a sine-wave shaped profile on a boundary parallel to the particle oscillations is considered, which is found to have large influences on both the magnitude of acoustic streaming velocities and streaming patterns.
Lei, Junjun
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Hill, Martyn
0cda65c8-a70f-476f-b126-d2c4460a253e
Glynne-Jones, Peter
6ca3fcbc-14db-4af9-83e2-cf7c8b91ef0d
Lei, Junjun
7b48b212-a721-4eca-b866-ff4fdad219e2
Hill, Martyn
0cda65c8-a70f-476f-b126-d2c4460a253e
Glynne-Jones, Peter
6ca3fcbc-14db-4af9-83e2-cf7c8b91ef0d
Lei, Junjun, Hill, Martyn and Glynne-Jones, Peter
(2014)
Effects of surface profile on a boundary-driven acoustic streaming field.
Acoustofluidics 2014, Prato, Italy.
11 - 12 Sep 2014.
2 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Control of boundary-driven streaming in acoustofluidic systems is vital for various microfluidic applications either to generate it as a positive mechanism (e.g. microfluidic mixing, heat/mass transfer and fluid pumping) or suppressing it as an undesired disturbance (e.g. particle/cell focusing). It has been shown that two-dimensional (2D) and three-dimensional (3D) boundary-driven streaming can be solved from the limiting velocity method as long as the curvature of the surface is small compared to the viscous penetration depth. In this work, acoustic streaming fields in 2D rectangular enclosures that have structured textures, which do not satisfy this condition are numerically studied by full modelling of Reynolds stresses and the effects of surface profile amplitude on a boundary-driven acoustic streaming field are investigated. Specifically, a sine-wave shaped profile on a boundary parallel to the particle oscillations is considered, which is found to have large influences on both the magnitude of acoustic streaming velocities and streaming patterns.
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Effects of surface profile on a boundary-driven acoustic streaming field_Acoustofluidics2014.pdf
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e-pub ahead of print date: 11 September 2014
Venue - Dates:
Acoustofluidics 2014, Prato, Italy, 2014-09-11 - 2014-09-12
Organisations:
Mechatronics
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Local EPrints ID: 395438
URI: http://eprints.soton.ac.uk/id/eprint/395438
PURE UUID: 2f9960c9-efde-426a-aefe-21375f986d78
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Date deposited: 31 May 2016 15:39
Last modified: 15 Mar 2024 03:03
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Author:
Junjun Lei
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