Open AccessDevelopment of Echo-LPT for the study of particle-wall interactions in dense suspensions
Author(s) -
Milad Samie,
Kai Zhang,
Mohammad Reza Najjari,
David E. Rival
Publication year - 2021
Publication title -
international symposium on particle image velocimetry.
Language(s) - English
Resource type - Journals
ISSN - 2769-7576
DOI - 10.18409/ispiv.v1i1.209
Subject(s) - particle image velocimetry , particle (ecology) , refractive index , suspension (topology) , particle tracking velocimetry , velocimetry , volume fraction , entrainment (biomusicology) , mechanics , lagrangian , materials science , flow (mathematics) , physics , optics , acoustics , mathematics , geology , composite material , turbulence , oceanography , homotopy , rhythm , pure mathematics , mathematical physics
Examining the behaviour of dense suspensions has proven to be difficult, both experimentally and numerically. Using super water–absorbent polymer, PIV measurement was successfully conducted in a hydrogel suspension with a volume fraction (VF) of Φ =20% (see Zhang and Rival, 2018). However, due to the slightly refractive index mismatch, the image quality will degrade significantly as the particle loading of the hydrogel is increased. In order to achieve flow measurements in suspensions with high volume fractions, non-optical based techniques such as ultrasound imaging velocimetry (UIV) should be implemented. UIV has been developed for fluid dynamics applications and embraced by many researchers to study fluid flows (Gurung and Poelma, 2016; Jeronimo et al., 2019). Although, UIV provides useful information about the flow physics, it is unable to provide Lagrangian quantities such as particle trajectories, which is a key parameter to study entrainment and particle-wall interactions.