Levich Institute/Mechanical Engineering Joint Seminar – Thursday, 11/16/2023

Thursday, 11/16/2023
2:00 PM
Steinman Hall #312 

Professor Timm Krueger
University of Edinburgh, School of Engineering

Particle Pairs and Suspensions in Inertial Microfluidics – insights from Computer Simulations


Inertial particle microfluidics is a relatively new technology that exploits inertial effects to manipulate and control particle dynamics. Under inertial flow conditions, particle-particle interactions can lead to the formation of pairs and trains of particles. We analyse the behaviour of two and multiple capsules in channel flow under moderate inertia. We employ an immersed-boundary-lattice-Boltzmann-finite-element solver to account for the fluid mechanics, the capsule dynamics, and their coupling. We find that the formation of stable pairs of particles depends on the relative size and softness of the particles and their positions at the time of their first encounter. Suspensions with more particles show shear-induced fluctuations that compete with inertial focussing. Applications relying on lateral focussing, such as separation, or precise inter-particle spacing, such as cytometry, might benefit from our findings.

2008-2011: PhD in Physics at Max Planck Institute in Dusseldorf and Ruhr University Bochum, Germany2011-2012: Postdoc in Applied Physics at Technical University Eindhoven, Netherlands2012-2013: Postdoc in Chemistry at University College London, UK2013-2018: Chancellor’s Fellow at University of Edinburgh, UK2018-2020: Lecturer (Assistant Professor) in Chemical Engineering at University of Edinburgh, UK2020-2023: Reader (Associate Professor) in Chemical Engineering at University of Edinburgh, UKSince 2023: Professor of Fluid and Suspension Dynamics at University of Edinburgh, UK
My research group is interested in understanding the dynamics of cellular blood flow in the microcirculation and in microfluidic devices, in particular in inertial microfluidics. We are using computer simulations to explore fundamental mechanisms and answer questions related to biological problems.
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