Title:
Dynamics of Rigid Fibers in a Planar Converging Channel

Simple item page
dc.contributor.advisor Aidun, Cyrus K.
dc.contributor.advisor Empie, Jeff
dc.contributor.author Brown, Matthew Lee en_US
dc.contributor.committeeMember Larry Forney
dc.contributor.committeeMember Mostafa Ghiaasiaan
dc.contributor.committeeMember Victor Breedveld
dc.contributor.department Engineering en_US
dc.contributor.department Chemical Engineering
dc.date.accessioned 2005-07-28T17:58:14Z
dc.date.available 2005-07-28T17:58:14Z
dc.date.issued 2005-04-10 en_US
dc.description.abstract The influence of turbulence on the orientation state of a dilute suspension of stiff fibers at high Reynolds number in a planar contraction is investigated. High speed imaging and LDV techniques are used to quantify fiber orientation distribution and turbulent characteristics. A nearly homogenous, isotropic grid generated turbulent flow is introduced at the contraction inlet. Flow Reynolds number and inlet turbulent characteristics are varied in order to determine their effects on orientation distribution. The orientation anisotropy is shown to be accurately modelled by a Fokker-Planck type equation. Results show that rotational diffusion is highly influenced by inlet turbulent characteristics and decays exponentially with convergence ratio. Furthermore, the effect of turbulent energy production in the contraction is shown to be negligible. Also, the results show that the flow Reynolds number has negligible effect on the development of orientation anisotropy, and the influence of turbulence on fiber rotation is negligible for $mathrm{Pe_r}>$ 10. It was concluded that inertia induced fiber motion played a negligible role in the experiments. en_US
dc.description.degree Ph.D. en_US
dc.format.extent 1265365 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/6894
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Extensional flow en_US
dc.subject Orientation diffusion model
dc.subject Paper forming
dc.subject Fiber orientation
dc.subject Planar contraction
dc.subject Turbulence
dc.title Dynamics of Rigid Fibers in a Planar Converging Channel en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Aidun, Cyrus K.
local.contributor.corporatename School of Chemical and Biomolecular Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication 4b7dc133-2272-48c8-90bc-5f8401a4222c
relation.isOrgUnitOfPublication 6cfa2dc6-c5bf-4f6b-99a2-57105d8f7a6f
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
brown_matthew_l_200505_phd.pdf
Size:
1.21 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Theses and Dissertations