Near-wall velocity of suspended particles in microchannel flow
Hau, Winky L. W., Liu, Zhenyu, Korvink, Jan, Zengerle, Roland and Ducrée, JensORCID: 0000-0002-0366-1897
(2008)
Near-wall velocity of suspended particles in microchannel flow.
In: MEMS 2008 - 21st IEEE International Conference on Micro Electro Mechanical Systems, 13-17 January 2008, Tucson, AZ , USA.
ISBN 978-1-4244-1792-6
This contribution investigates the characteristic reduction of the particle velocity with respect to the velocity profile of a pure liquid (water) in a pressure driven flow (PDF). It is shown by simulations and experiments that particles are slowed down once their local perturbation "cloud" of the velocity field hits the wall. We show that this effect scales with the ratio of the distance of sphere's surface from the wall, a, and the radius, a, of the sphere, i.e. delta/a.
Proceedings of the 21st IEEE International Conference on Micro Electro Mechanical Systems.
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Institute of Electrical and Electronics Engineers. ISBN 978-1-4244-1792-6