TY - JOUR
T1 - Modeling the Transition between Localized and Extended Deposition in Flow Networks through Packings of Glass Beads
AU - Kelly, Gess
AU - Bizmark, Navid
AU - Chakraborty, Bulbul
AU - Datta, Sujit S.
AU - Fai, Thomas G.
N1 - Publisher Copyright:
© 2023 American Physical Society.
PY - 2023/3/24
Y1 - 2023/3/24
N2 - We use a theoretical model to explore how fluid dynamics, in particular, the pressure gradient and wall shear stress in a channel, affect the deposition of particles flowing in a microfluidic network. Experiments on transport of colloidal particles in pressure-driven systems of packed beads have shown that at lower pressure drop, particles deposit locally at the inlet, while at higher pressure drop, they deposit uniformly along the direction of flow. We develop a mathematical model and use agent-based simulations to capture these essential qualitative features observed in experiments. We explore the deposition profile over a two-dimensional phase diagram defined in terms of the pressure and shear stress threshold, and show that two distinct phases exist. We explain this apparent phase transition by drawing an analogy to simple one-dimensional mass-aggregation models in which the phase transition is calculated analytically.
AB - We use a theoretical model to explore how fluid dynamics, in particular, the pressure gradient and wall shear stress in a channel, affect the deposition of particles flowing in a microfluidic network. Experiments on transport of colloidal particles in pressure-driven systems of packed beads have shown that at lower pressure drop, particles deposit locally at the inlet, while at higher pressure drop, they deposit uniformly along the direction of flow. We develop a mathematical model and use agent-based simulations to capture these essential qualitative features observed in experiments. We explore the deposition profile over a two-dimensional phase diagram defined in terms of the pressure and shear stress threshold, and show that two distinct phases exist. We explain this apparent phase transition by drawing an analogy to simple one-dimensional mass-aggregation models in which the phase transition is calculated analytically.
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U2 - 10.1103/PhysRevLett.130.128204
DO - 10.1103/PhysRevLett.130.128204
M3 - Article
C2 - 37027860
AN - SCOPUS:85151235919
SN - 0031-9007
VL - 130
JO - Physical review letters
JF - Physical review letters
IS - 12
M1 - 128204
ER -