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Velocity measurements of turbulent two-phase flow in a high-pressure homogenizer model
Lund University.ORCID iD: 0000-0002-0002-661X
Lund University.
Tetra Pak Processing Systems.
Lund University.
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2013 (English)In: Chemical Engineering Communications, ISSN 0098-6445, E-ISSN 1563-5201, Vol. 200, no 1, 93-114 p.Article in journal (Refereed) Published
Abstract [en]

The effect of disperse phase volume fraction on the turbulence in a scale model of a high-pressure homogenizer was studied experimentally. Velocity fields of the continuous phase were measured using particle image velocimetry. Refractive index matching combined with digital filtering enabled measurement with disperse phase present. Geometry and physical properties were carefully scaled in order to ensure turbulent flow and disperse phase modulation comparable to that of a technical high-pressure homogenizer. The results show a widening of the jet downstream of the gap and increased Reynolds stresses in the region of high turbulence intensity. This is consistent with previous experiments under similar conditions. Furthermore, the spectra of turbulent kinetic energy were investigated, indicating that the increase in turbulent kinetic energy is mainly due to an increase in energy of eddies of large length scales.

Place, publisher, year, edition, pages
2013. Vol. 200, no 1, 93-114 p.
Keyword [en]
Emulsification, High-pressure homogenization, Multiphase flows, Particle image velocimetry, Turbulence
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hkr:diva-12395DOI: 10.1080/00986445.2012.691921ISI: 000310604500006OAI: oai:DiVA.org:hkr-12395DiVA: diva2:733609
Funder
Swedish Research Council
Available from: 2014-07-10 Created: 2014-07-10 Last updated: 2016-04-01Bibliographically approved

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Håkansson, Andreas
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