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In-line rheometry of particulate suspensions by pulsed ultrasound velocimetry combined with pressure difference method

Wiklund, Johan LU ; Birkhofer, Beat; Jeelani, Shaik A. K.; Stading, Mats T. and Windhab, Erich J. (2012) In Applied Rheology 22(4). p.42232-42232
Abstract
The in-line rheometer concept based on the combination of the ultrasonic velocity profiling (UVP) technique and pressure difference (PD) measurements was utilized for investigating the influence of particle concentration and size distribution on the rheology of particulate suspensions in pipe flow under realistic industrial process conditions. Well defined model suspensions were used, consisting of 11 mu m and 90 mu m diameter polyamide particles suspended in rapeseed oil at concentrations ranging from 1 to 25 % by volume. The variation of concentration and particle size distribution had the expected effects on the shear viscositiy of the investigated uni-modal and bimodal suspensions. The in-line results showed that the investigated... (More)
The in-line rheometer concept based on the combination of the ultrasonic velocity profiling (UVP) technique and pressure difference (PD) measurements was utilized for investigating the influence of particle concentration and size distribution on the rheology of particulate suspensions in pipe flow under realistic industrial process conditions. Well defined model suspensions were used, consisting of 11 mu m and 90 mu m diameter polyamide particles suspended in rapeseed oil at concentrations ranging from 1 to 25 % by volume. The variation of concentration and particle size distribution had the expected effects on the shear viscositiy of the investigated uni-modal and bimodal suspensions. The in-line results showed that the investigated suspensions exhibit Sisko flow behavior and demonstrated that the UVP+PD method can be used to determine the flow behavior of complex fluids and suspensions, even at high solid concentrations, under industrial conditions in-line. The obtained in-line results were in good agreement with measurement data obtained using a conventional rotational controlled-stress rheometer. Limitations of commercially available transducer technology were identified and other possible sources of inaccuracy of the UVP+PD method were investigated. Several improvements of the UVP+PD measurement method were proposed. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
in-line rheology, particulate suspensions, bimodal suspensions, velocity, profiles
in
Applied Rheology
volume
22
issue
4
pages
42232 - 42232
publisher
Kerschensteiner Verlag
external identifiers
  • wos:000310494400010
  • scopus:84867363931
ISSN
1430-6395
DOI
10.3933/ApplRheol-22-42232
language
English
LU publication?
yes
id
066c90ec-3998-4196-9659-6396bf1e6648 (old id 3284040)
date added to LUP
2012-12-20 10:00:53
date last changed
2017-08-06 03:10:26
@article{066c90ec-3998-4196-9659-6396bf1e6648,
  abstract     = {The in-line rheometer concept based on the combination of the ultrasonic velocity profiling (UVP) technique and pressure difference (PD) measurements was utilized for investigating the influence of particle concentration and size distribution on the rheology of particulate suspensions in pipe flow under realistic industrial process conditions. Well defined model suspensions were used, consisting of 11 mu m and 90 mu m diameter polyamide particles suspended in rapeseed oil at concentrations ranging from 1 to 25 % by volume. The variation of concentration and particle size distribution had the expected effects on the shear viscositiy of the investigated uni-modal and bimodal suspensions. The in-line results showed that the investigated suspensions exhibit Sisko flow behavior and demonstrated that the UVP+PD method can be used to determine the flow behavior of complex fluids and suspensions, even at high solid concentrations, under industrial conditions in-line. The obtained in-line results were in good agreement with measurement data obtained using a conventional rotational controlled-stress rheometer. Limitations of commercially available transducer technology were identified and other possible sources of inaccuracy of the UVP+PD method were investigated. Several improvements of the UVP+PD measurement method were proposed.},
  author       = {Wiklund, Johan and Birkhofer, Beat and Jeelani, Shaik A. K. and Stading, Mats T. and Windhab, Erich J.},
  issn         = {1430-6395},
  keyword      = {in-line rheology,particulate suspensions,bimodal suspensions,velocity,profiles},
  language     = {eng},
  number       = {4},
  pages        = {42232--42232},
  publisher    = {Kerschensteiner Verlag},
  series       = {Applied Rheology},
  title        = {In-line rheometry of particulate suspensions by pulsed ultrasound velocimetry combined with pressure difference method},
  url          = {http://dx.doi.org/10.3933/ApplRheol-22-42232},
  volume       = {22},
  year         = {2012},
}