Computer simulation of magnetic resonance imaging of the flow of fluidized particles

Journal
Industrial & Engineering Chemistry Research  
Volume
62
Issue
29
Start Page
11677
End Page
11688
Citation
Industrial and Engineering Chemistry Research 62 (29): 11677–11688 (2023-07-12)
Publisher DOI
10.1021/acs.iecr.3c01021
Scopus ID
2-s2.0-85165693118
Rapid magnetic resonance imaging (MRI) and velocimetry (MRV) are non-invasive measurement techniques in 3D opaque systems with ∼10 ms temporal resolution, enabling new opportunities to challenge the accuracy of computational models of flow. Comparisons between rapid MRI/MRV and computer simulations are limited by (i) artifacts in rapid MRI techniques and (ii) non-trivial aspects of post-processing of computer simulation data to best match the measurement techniques. Here, we address these issues by starting with data from computer flow simulations of fluidized particles and feeding the data to a physics-based simulation of MRV measurements, which captures potential artifacts introduced by the measurement techniques. Flow simulation data is then post-processed in various ways, demonstrating that (1) velocity and particle position data must be taken from flow simulations at different points in time to match MRV measurements and (2) imaging must be faster than flow fluctuation for MRV to produce effectively instantaneous velocity fields.
DDC Class
530: Physics