Radial variations in residence time distribution for pipe flows
Name
012006_1_5.0307692.pdf
Description
Published version
Size
1.99 MB
Format
Adobe PDF
Checksum (MD5)
6bae34ec43e65444ebdbfefdba6d98bf
Author(s)
Boulais, Etienne
Braatz, Richard D
Date Issued
January 15, 2026
Journal
Physics of Fluids
Publisher
AIP Publishing
Citation
Etienne Boulais, Richard D. Braatz; Radial variations in residence time distribution for pipe flows. Physics of Fluids 1 January 2026; 38 (1): 012006.
Version
Final published version
Abstract
Suspensions of low-diffusing particles in pipe flows exhibit a difference in age at different radial positions. Particles near the channel walls have higher residence times than the cross-sectional average. We quantify this effect using Monte Carlo simulations and show the existence of two different regimes: a “transitional” regime where delay compounds with channel length and a “far-field” regime where diffusion counterbalances advection. The results presented therein can be used to quantify residence time distributions near the walls of the tube. This effect is important to consider in experiments involving the kinetics of nanometer-scale particles using modern inline analytical tools. This work also provides a radially resolved extension of classical Taylor dispersion results.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Terms of Use
Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1063/5.0307692
