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The effect of stator design on flowrate and velocity fields in a rotor-stator mixer: an experimental investigation
Tetra Pak Processing Systems AB.
Tetra Pak Processing Systems AB & Lund University.
Högskolan Kristianstad, Forskningsmiljön Food and Meals in Everyday Life (MEAL). Högskolan Kristianstad, Sektionen för lärande och miljö, Avdelningen för Mat- och måltidsvetenskap.ORCID-id: 0000-0002-0002-661X
2017 (engelsk)Inngår i: Chemical engineering research & design, ISSN 0263-8762, E-ISSN 1744-3563, Vol. 121, s. 245-254Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Rotor-stator mixers (RSMs) are available in different designs, e.g. with different number of stator slots and slot dimensions. However, the relationship between stator design and the RSM hydrodynamics is not well understood. Consequently, manufacturers still base design and stator screen recommendations on trial-and-error.

This study reports experimental measurements of how the flowrate through the stator slots, and velocity profiles in the region of relevance for mixing and breakup, is influenced by the stator slot width, using particle image velocimetry. It is concluded that the flowrate can be described by a design dependent flow number for all investigated geometries and that the flow number decreases with increasing slot width. Moreover, by studying the velocity profiles at different rotor speeds and designs, it is concluded that the velocity profile, its skewness and the proportion of back-flow (fluid re-entering the slot) scales with the flow number of the design. This suggests that the flow number, in addition to rotor speed, is a highly relevant parameter for describing the effect of design on batch RSM hydrodynamics.

sted, utgiver, år, opplag, sider
2017. Vol. 121, s. 245-254
HSV kategori
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URN: urn:nbn:se:hkr:diva-16613DOI: 10.1016/j.cherd.2017.03.016ISI: 000401201100021OAI: oai:DiVA.org:hkr-16613DiVA, id: diva2:1085127
Forskningsfinansiär
Knowledge Foundation, 20150023Tilgjengelig fra: 2017-03-28 Laget: 2017-03-28 Sist oppdatert: 2017-11-10bibliografisk kontrollert

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