https://doi.org/10.1051/epjconf/202124903006
Quantitative measurement of hopper flow using MRI
1
Department of Chemical and Process Engineering, University of Canterbury, New Zealand
2
School of Fundamental Sciences, Massey University, New Zealand
3
MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Chemical and Physical Sciences, Victoria University, New Zealand
* Corresponding author: maral.mehdizad@pg.canterbury.ac.nz
Published online: 7 June 2021
To gain fundamental insight into granular flow behaviour, quantitative measurements of velocity and solid fraction are required. The aim of this study is to measure the solid fraction and velocity of 3D granular flows quantitively using a recently developed MRI method. Time-averaged spatial maps of the solid fraction and velocity are obtained for hoppers with wall angles of 30°, 60°, and 90°. From these maps, the mass flow rate of the material was calculated along the height of the hoppers. Excellent agreement was observed between the MRI and gravimetric mass flow rate measurements, confirming the quantitative nature of the measurements. The resulting solid fraction and velocity measurements provide insight into the dynamics of granular flow.
A video is available at https://doi.org/10.48448/jsys-4q74
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
