Particle segregation and dynamics in confined flows

TY - JOUR

T1 - Particle segregation and dynamics in confined flows

AU - Di Carlo, Dino

AU - Edd, Jon F.

AU - Humphry, Katherine J.

AU - Stone, Howard A.

AU - Toner, Mehmet

PY - 2009/3/2

Y1 - 2009/3/2

N2 - Nonlinearity in finite-Reynolds-number flow results in particle migration transverse to fluid streamlines, producing the well-known "tubular pinch effect" in cylindrical pipes. Here we investigate these nonlinear effects in highly confined systems where the particle size approaches the channel dimensions. Experimental and numerical results reveal distinctive dynamics, including complex scaling of lift forces with channel and particle geometry. The unique behavior described in this Letter has broad implications for confined particulate flows.

AB - Nonlinearity in finite-Reynolds-number flow results in particle migration transverse to fluid streamlines, producing the well-known "tubular pinch effect" in cylindrical pipes. Here we investigate these nonlinear effects in highly confined systems where the particle size approaches the channel dimensions. Experimental and numerical results reveal distinctive dynamics, including complex scaling of lift forces with channel and particle geometry. The unique behavior described in this Letter has broad implications for confined particulate flows.

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U2 - https://doi.org/10.1103/PhysRevLett.102.094503

DO - https://doi.org/10.1103/PhysRevLett.102.094503

M3 - Article

C2 - 19392526

SN - 0031-9007

VL - 102

JO - Physical review letters

JF - Physical review letters

IS - 9

M1 - 094503

ER -