caa a22 4500 606197109 CHVBK 20210128100927.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00348-014-1875-5 doi (NATIONALLICENCE)springer-10.1007/s00348-014-1875-5 A Lagrangian study of liquid flow in a reverse-flow hydrocyclone using positron emission particle tracking [Elektronische Daten] [Yu-Fen Chang, Alex Hoffmann] In this study, the liquid flow in a reverse-flow hydrocyclone is studied experimentally using the Lagrangian approach. Resin beads with densities that are close to the density of the liquid in which they move, i.e., neutral-density particles, are used to model a fluid element in the highly turbulent flow in a hydrocyclone separator and tracked using PEPT with a temporal resolution of up to 0.5ms. A method of producing neutral-density particles for PEPT was developed. The data processing algorithm was improved for the extra challenging tracking conditions that were encountered. The components of velocity, which reveal the detailed velocity field of the fluid, were calculated from the positions of the tracers. Various noise-removal methods, again to cope with the challenging tracking conditions, were applied and discussed. Springer-Verlag Berlin Heidelberg, 2014 Chang Yu-Fen Department of Physics and Technology, University of Bergen, Allegaten 55, 5007, Bergen, Norway aut Hoffmann Alex Department of Physics and Technology, University of Bergen, Allegaten 55, 5007, Bergen, Norway aut Experiments in Fluids Springer Berlin Heidelberg 56/1(2015-01-01), 1-14 0723-4864 56:1<1 2015 56 348 https://doi.org/10.1007/s00348-014-1875-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00348-014-1875-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chang Yu-Fen Department of Physics and Technology, University of Bergen, Allegaten 55, 5007, Bergen, Norway aut NATIONALLICENCE 700 1- Hoffmann Alex Department of Physics and Technology, University of Bergen, Allegaten 55, 5007, Bergen, Norway aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/1(2015-01-01), 1-14 0723-4864 56:1<1 2015 56 348