Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session M25: Microscale Flows: Particle Inertia
8:00 AM–10:10 AM,
Tuesday, November 20, 2018
Georgia World Congress Center
Room: B313
Chair: Mattia Gazzola, University of Illinois Urbana-Champaign
Abstract ID: BAPS.2018.DFD.M25.2
Abstract: M25.00002 : Flow-induced rotation and inertial focusing of complex shaped particles in channel flow
8:13 AM–8:26 AM
Presenter:
Rajat Mittal
(Johns Hopkins Univ)
Authors:
Rajat Mittal
(Johns Hopkins Univ)
Jung-Hee Seo
(Johns Hopkins University)
Soojung Claire Hur
(Johns Hopkins Univ)
Inertial focusing of particles in a spatially varying shear flow is potentially an effective technique for the manipulation and segregation of microparticles. While the inertial migration of spherical/circular particles has been studied theoretically, experimentally, and numerically in many previous studies, little attention has been paid to the behavior of particles with complex, asymmetric shapes. Given that most real particles have non-simple shapes, the effect of particle shape on their inertial movement in flow is particularly important to investigate. In the present study, the inertial focusing and rotation characteristics of a class of complex-shaped particles in channel flow are investigated by using a sharp-interface immersed boundary method. The effects of particle shape, size, and flow Reynolds number on particle focusing and rotation are examined. Based on the simulations, we present physical insights and scaling laws for this phenomenon.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.M25.2
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