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 G07: Microchannel Flows
10:35 AM–12:45 PM,
Monday, November 19, 2018
Georgia World Congress Center
Room: B212
Chair: Xiangchun Xuan, Clemson University
Abstract ID: BAPS.2018.DFD.G07.2
Abstract: G07.00002 : Experiment and depth-averaged analysis of water flow in contraction-expansion microchannels*
10:48 AM–11:01 AM
Presenter:
Di Li
(Clemson University)
Authors:
Xiangchun Xuan
(Clemson University)
Di Li
(Clemson University)
The entry flow through a sudden contraction is a classical multidimensional problem that has been studied for decades. It becomes even more complicated in planar geometries that are typical in the microfluidics community because of the standard soft lithography technique. A three-dimensional simulation of such a flow, though proving accurate, is inevitably time-consuming and computationally expensive. Considering the fact that the planar microfluidic channels often have a small width/depth aspect ratio, we present in this work a generalized depth-averaged model suitable for studying the flow behavior in microfluidic devices with shallow-channel geometries. We demonstrate this idea by comparing the prediction of a depth-averaged analysis with both the three-dimensional simulation and the experimental observation for water flow through planar contraction-expansion microchannels of varying depths under varying flow rates.
*NSF CBET-1704379
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.G07.2
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