---
_id: '26118'
abstract:
- lang: eng
  text: Suspensions are subject to confinement induced structuring, i.e. layering,
    at the confining surfaces. While most of the previous work focused on layering
    in Couette cells, the present study aimed to characterize the resulting layers
    at the plates of a parallel plate rheometer with regard to their relative particle
    concentration. The particle concentration profile over the radial distance was
    characterized for various mean concentrations and gap heights. To this end, we
    mapped the distribution of fluorescently dyed tracer particles in density and
    refractive index matched suspensions. The results indicate that layering at the
    surfaces stabilizes as the ratio between gap height and particle diameter increases.
    For lower gap heights, i.e. as the suspension approaches a two dimensional state,
    the layer concentration was non-uniform over the plates. In general, results were
    quantitatively different for the upper and lower plate and the concentration profiles
    were noticeably asymmetric. We conclude that this is probably the result of the
    rheometer loading or the start-up process. The stable layers as well as the inhomogeneous
    particle distribution in general offer an explanation for the lack of transferability
    of viscosimetric results between different setups.
author:
- first_name: Sven
  full_name: Pieper, Sven
  last_name: Pieper
- first_name: Hans-Joachim
  full_name: Schmid, Hans-Joachim
  id: '464'
  last_name: Schmid
citation:
  ama: Pieper S, Schmid H-J. Layer-formation of non-colloidal suspensions in a parallel
    plate rheometer under steady shear. <i>Journal of Non-Newtonian Fluid Mechanics</i>.
    Published online 2016:1-7. doi:<a href="https://doi.org/10.1016/j.jnnfm.2016.04.004">10.1016/j.jnnfm.2016.04.004</a>
  apa: Pieper, S., &#38; Schmid, H.-J. (2016). Layer-formation of non-colloidal suspensions
    in a parallel plate rheometer under steady shear. <i>Journal of Non-Newtonian
    Fluid Mechanics</i>, 1–7. <a href="https://doi.org/10.1016/j.jnnfm.2016.04.004">https://doi.org/10.1016/j.jnnfm.2016.04.004</a>
  bibtex: '@article{Pieper_Schmid_2016, title={Layer-formation of non-colloidal suspensions
    in a parallel plate rheometer under steady shear}, DOI={<a href="https://doi.org/10.1016/j.jnnfm.2016.04.004">10.1016/j.jnnfm.2016.04.004</a>},
    journal={Journal of Non-Newtonian Fluid Mechanics}, author={Pieper, Sven and Schmid,
    Hans-Joachim}, year={2016}, pages={1–7} }'
  chicago: Pieper, Sven, and Hans-Joachim Schmid. “Layer-Formation of Non-Colloidal
    Suspensions in a Parallel Plate Rheometer under Steady Shear.” <i>Journal of Non-Newtonian
    Fluid Mechanics</i>, 2016, 1–7. <a href="https://doi.org/10.1016/j.jnnfm.2016.04.004">https://doi.org/10.1016/j.jnnfm.2016.04.004</a>.
  ieee: 'S. Pieper and H.-J. Schmid, “Layer-formation of non-colloidal suspensions
    in a parallel plate rheometer under steady shear,” <i>Journal of Non-Newtonian
    Fluid Mechanics</i>, pp. 1–7, 2016, doi: <a href="https://doi.org/10.1016/j.jnnfm.2016.04.004">10.1016/j.jnnfm.2016.04.004</a>.'
  mla: Pieper, Sven, and Hans-Joachim Schmid. “Layer-Formation of Non-Colloidal Suspensions
    in a Parallel Plate Rheometer under Steady Shear.” <i>Journal of Non-Newtonian
    Fluid Mechanics</i>, 2016, pp. 1–7, doi:<a href="https://doi.org/10.1016/j.jnnfm.2016.04.004">10.1016/j.jnnfm.2016.04.004</a>.
  short: S. Pieper, H.-J. Schmid, Journal of Non-Newtonian Fluid Mechanics (2016)
    1–7.
date_created: 2021-10-13T13:55:45Z
date_updated: 2022-01-06T06:57:16Z
doi: 10.1016/j.jnnfm.2016.04.004
language:
- iso: eng
page: 1-7
publication: Journal of Non-Newtonian Fluid Mechanics
publication_identifier:
  issn:
  - 0377-0257
publication_status: published
status: public
title: Layer-formation of non-colloidal suspensions in a parallel plate rheometer
  under steady shear
type: journal_article
user_id: '70093'
year: '2016'
...