Two-phase Flow Visualization Employing Gauss-Newton Method in Microchannel
Abstract: Flow behaviour
monitoring on the micro-scale is very important in many industrial and
biochemical process. Electrical resistance tomography (ERT), as an alternative
technique to visualize multi-phase flows, has high temporal resolution for
monitoring fast transient processes. However, the complexity of microchannel
fabrication end up with the difficulty of electrical data sampling and the
non-linearity and ill-posedness of the inverse problem often cause the poor
spatial resolution of the reconstructed images. Inthis paper, Agilent based
data acquisition hardware was set up for reliable data retrieval from a novel
microchannel. Gauss-Newton method with adaptive threshold (GNAT) technique was
presented to improve the spatial resolution of ERT images.Preliminary
experimental results reveal that ERT system based on Agilent data acquisition
unit and GNAT method can effectively visualize the solid-liquid two-phase flow
in microchannel.
Author: Yonghong Liu, Mingyan
Zu, Xiantao Wang, Je-Eun Choi
Journal Code: jptkomputergg130104
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