Two-phase Flow Visualization Employing Gauss-Newton Method in Microchannel

Yonghong Liu, Mingyan Zu, Xiantao Wang, Je-Eun Choi


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.

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Choi J.E, Takei M, Doh D.H. Fabrication of Microchannel with 60 Electrodes and Resistance Measurement. Flow measurement and instrumentation. 2010; 61:2733-2738.

Sung-Min Kim, Issam Mudawar. Universal approach to predicting two-phase frictional pressure drop for mini/micro-channel saturated flow boiling. International Journal of Heat and Mass Transfer. 2013; 58:718-734

Yan Liu,Pin Shao,Hongliang Zhao, Et al. Simulation on gas injection refining process with mechanical stirring. TELKOMNIKA Indonesian Journal of Electrical Engineering. 2012; 10(8): 2194-2201.

Sira Saisorn, Somchai Wongwises.The effects of channel diameter on flow pattern, void fraction and pressure drop of two-phase air-water flow in circular micro-channels. Experimental Thermal and Fluid Science. 2010; 34(4): 454-462

G. Hetsroni, A. Mosyak, E. Pogrebnyak, Z. Segal. Heat transfer of gas-liquid mixture in micro-channel heat sink. International Journal of Heat and Mass Transfer. 2009; 52(17):3963-3971.

Doku G.N, Verboom W, Reinhoudt D.N. On-microchip multiphase chemistry-a review of microreactor design principles and reagent contacting modes. Tetrahedron. 2005; 61: 2733-2742.

Tegenfeldt J.O, Prinz C, Cao H. Micro- and nanofluidics for DNA analysis. Anal. Bioanal. Chem. 2004; 378:1678-1692.

Ichiyanagi M, Sasaki S, Sato Y. Micro-PIV/LIF measurements on electrokinetically-driven flow in surface modified microchannels. Journal of Micromechanics and Microengineering. 2009; 19:1-9.

Ricard F, Brechtelsbauer C, Xu X.Y. Monitoring of Multiphase Pharmaceutical Processes Using Electrical Resistance Tomography. Chemical Engineering Research and Design. 2005; 83:794-805.

Barber DC, Brown BH. Applied potential tomography. Journal of Physics E: Scientific Instruments. 1984; 17:723-33.

Yorkey TJ, Webster JG, Tompkins WJ. Comparing reconstruction algorithms for electrical impedance tomography. Transactions on Biomedical Engineering 1987; 34:843-52.

Umer Zeeshan Ijaz, Anil Kumar Khambampati, Jeong Seong Lee. Nonstationary phase boundary estimation in electrical impedance tomography using unscented Kalman filter. Journal of Computational Physics. 2008; 227:7089-7112.

N. Polydorides. PhD thesis, Image reconstruction algorithms for soft-field tomography, University of Manchester Institute of science and technology, Manchester. 2002: 250.

Kim BS, Khambampati AK, Kim S, Kim KY. Image reconstruction with an adaptive threshold technique in electrical resistance tomography. Measurement Science and Technology. 2011; 22:1-12.

Otsu N. A threshold selection method fr om gray-level histograms. IEEE Transactions on Systems, Man, and Cybernetics. 1979; 9:62-66.

Liao PS, Chen TS, Chung PC. A fast algorithm for multilevel thresholding. Journal of Information Science and Engineering. 2001; 17:713-727.

Cheney M, Isaacson D, Newell JC, Simske S, Goble J. NOSER: an algorithm for solving the inverse conductivity problem. International Journal of Imaging Systems and Technology. 1990; 2:66-75.



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