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Visual observations and acoustic measurements of cavitation in an experimental model of a high-pressure homogenizer

Håkansson, Andreas LU ; Fuchs, Laszlo LU ; Innings, Fredrik; Revstedt, Johan LU ; Bergenståhl, Björn LU and Trägårdh, Christian LU (2010) In Journal of Food Engineering 100(3). p.504-513
Abstract
Cavitation is common in high-pressure homogenizers, and has severe negative effects such as noise and mechanical wear, but may also have a beneficial effect in promoting fragmentation. Greater knowledge concerning cavitation in the homogenizer valve is thus important in optimizing the design and utilization of emulsification equipment. The aim of this study was to locate the region of cavitation and to study its dependence on operating conditions. The cavitation in a model of a high-pressure homogenizer is examined in detail. A visualization technique, based on the scattering of light from cavitation bubbles in the flow, has been developed, tested and compared to acoustical measurements. Intense light scattering was observed in the gap of... (More)
Cavitation is common in high-pressure homogenizers, and has severe negative effects such as noise and mechanical wear, but may also have a beneficial effect in promoting fragmentation. Greater knowledge concerning cavitation in the homogenizer valve is thus important in optimizing the design and utilization of emulsification equipment. The aim of this study was to locate the region of cavitation and to study its dependence on operating conditions. The cavitation in a model of a high-pressure homogenizer is examined in detail. A visualization technique, based on the scattering of light from cavitation bubbles in the flow, has been developed, tested and compared to acoustical measurements. Intense light scattering was observed in the gap of the valve, indicating cavitation bubble growth as well as collapse inside the gap. The scattering intensity increased with increasing inlet pressure and decreased with increasing back pressure. (C) 2010 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cavitation, High-pressure homogenization, Dairy engineering, Hydrodynamics, Visualization
in
Journal of Food Engineering
volume
100
issue
3
pages
504 - 513
publisher
Elsevier
external identifiers
  • wos:000280119500016
  • scopus:77953684887
ISSN
0260-8774
DOI
10.1016/j.jfoodeng.2010.04.038
language
English
LU publication?
yes
id
126207bf-846b-4b23-a57d-f316f9a9c0e4 (old id 1654917)
date added to LUP
2010-08-30 13:34:22
date last changed
2018-05-29 12:21:53
@article{126207bf-846b-4b23-a57d-f316f9a9c0e4,
  abstract     = {Cavitation is common in high-pressure homogenizers, and has severe negative effects such as noise and mechanical wear, but may also have a beneficial effect in promoting fragmentation. Greater knowledge concerning cavitation in the homogenizer valve is thus important in optimizing the design and utilization of emulsification equipment. The aim of this study was to locate the region of cavitation and to study its dependence on operating conditions. The cavitation in a model of a high-pressure homogenizer is examined in detail. A visualization technique, based on the scattering of light from cavitation bubbles in the flow, has been developed, tested and compared to acoustical measurements. Intense light scattering was observed in the gap of the valve, indicating cavitation bubble growth as well as collapse inside the gap. The scattering intensity increased with increasing inlet pressure and decreased with increasing back pressure. (C) 2010 Elsevier Ltd. All rights reserved.},
  author       = {Håkansson, Andreas and Fuchs, Laszlo and Innings, Fredrik and Revstedt, Johan and Bergenståhl, Björn and Trägårdh, Christian},
  issn         = {0260-8774},
  keyword      = {Cavitation,High-pressure homogenization,Dairy engineering,Hydrodynamics,Visualization},
  language     = {eng},
  number       = {3},
  pages        = {504--513},
  publisher    = {Elsevier},
  series       = {Journal of Food Engineering},
  title        = {Visual observations and acoustic measurements of cavitation in an experimental model of a high-pressure homogenizer},
  url          = {http://dx.doi.org/10.1016/j.jfoodeng.2010.04.038},
  volume       = {100},
  year         = {2010},
}