Artículos de revistas
Two-phase Flow Imaging By Electrical Capacitance Tomography: Numerical Simulation For Image Reconstruction Algorithm Development
Registro en:
Revista Brasileira De Ciencias Mecanicas/journal Of The Brazilian Society Of Mechanical Sciences. , v. 19, n. 3, p. 322 - 331, 1997.
1007386
2-s2.0-5844394036
Autor
Mendes De Moura L.F.
Belo F.A.
Institución
Resumen
This paper describes a capacitance system for tomographic imaging of two-phase flows. Numerical simulations based on the finite element method provided the capacitance values between the e t de pairs for different spatial flow distribution. A linear back projection algorithm was used to reconstruct the cross sectonn image of the two-phase flow from the capacitance values. Some reconstructed flow images (stratified, annular and droplets) obtained using this algorithm are presented and discussed. Further efforts are undertaken to improve the filtering technique applied to the back projection algorithm. Limitations and possible future improvements of this technique are discussed. 19 3 322 331 Barber, D.C., Brown, B.H., Freeston, I.L., Imaging Spatial Distributions of Resistivity Using Applied Potential Tomography (1983) Elec. Lett., 19, pp. 933-935 Banholzer, W.F., Spiro, C.L., Kosky, P.G., Maylotte, D.H., Direct Imaging of Time-Averaged Flow Patterns in a Fluidized Reactor Using X-Ray Computed Tomography (1987) Ind. Eng. Chem. Res., 26, pp. 763-767 Belo, F.A., (1995) "Application of Electronic Analysis to the Study of Multiphase Flow" (in Portuguese), , PhD Thesis - Faculdade de Engenharia Mecânica, Universidade Estadual de Campinas, Brasil Dickin, F.J., Hoyle, B.S., Hunt, A., Huang, S.M., Ilyas, O., Lenn, C., Waterfall, R.C., Beck, M.S., Tomographic Imaging of Industrial Process Equipment: Techniques and Application (1992) IEE Proceeding-G, 139 (1), pp. 72-82 Dynes, K.A., Litle, R.J., Analysis of Electrical Conductivity Imaging (1981) Geophysics, 46, pp. 1025-1036 Fasching, G.E., Smith Jr., N.S., A capacitive System for Three-Dimensional Imaging of Fluidized Beds (1991) Rev. Sci. Instrum., 62 (9) Geraets, J.J.M., Borst, J.C., A Capacitance Sensor for Two-Phase Void Fraction Measurement and Flow Pattern Identification (1988) Int. J. Multiphase Flow, 14 (3), pp. 305-320 Herman, G.T., Image Reconstruction from Projections: Implementation and Applications (1979) Topics in Applied Physics, 32. , Berlin Springer Huang, S.M., Xie, C.G., Salkeld, J.A., Plaskowski, A., Thorn, R., Williams, R.A., Hunt, A., Beck, M.S., Process Tomography for Identification, Design and Measurement in Industrial Systems (1992) Powder Technology, 69, pp. 85-92 Hussein, E.M.A., Meneley, D.A., Single Exposure Neutron Tomography of Two-Phase Flow (1986) Int. J. Multiphase Flow, 12, pp. 1-34 Kim, Y., Webster, J.G., Tompkins, W.J., Electrical Impedance Imaging of Thorax (1983) J. Microwave Power, 18, pp. 245-257 Kin, I.C., Torquato, S., Determination of the Effective Conductivity of Heterogeneous Media by Brownian Simulation (1990) J. Appl. Phys., 68 (8) Kohn, R.V., Vogelius, M., Relaxation of a Variational Method for Impedance Computed Tomography (1987) Comm. Pure Appl. Math., 40, pp. 745-777 Lin, J.T., Ovacik, L., Jones, O.C., Newell, J.C., Cheney, M., Suzuki, H., Use of Electrical Impedance Imaging in Two-Phase, Gas-Liquid Flows (1991) ANS National Heat Transfer Conference, , USA MacCuaig, N., Seville, J.P.K., Gilboy, W.B., Clift, R., (1985) Appl. Opt., 24, p. 4083 McKee, S.L., Williams, R.A., Dyakowski, T., Bell, T.A., Industrial Application of Electrical Tomography to Conveying Processes (1993) Trans. Inst. Chem. Eng., 71 Plaskowski, K., Beck, M.S., Krawaczynski, J.S., Flow Imaging for Multi-Component Flow Measurement (1987) Trans. Inst. Meas. Control, 9 (2), pp. 108-112 Seagar, A.D., Barber, D.C., Brown, B.H., Electrical Impedance Imaging (1987) IEE Proc. 134, (2 PART A), pp. 201-210 Vinegar, H.J., Wellington, S.L., Tomographic Imaging of Three-Phase Flow Experiments (1986) Rev. Sci. Instrum., 58, pp. 96-107 Xie, C.G., Plaskowski, A., Beck, M.S., 8-Electrode Capacitance System for two-Component Flow Identification. Part 1: Tomographic Flow Imaging (1989) IEE Proceedings-G, 136 (4), pp. 173-183 Yorkey, T.J., Webster, J.G., Tompkins, W.J., Comparing Reconstruction Algorithms for Electrical Impedance Tomography (1987) IEEE Transactions on Biomedical Engineering, BME-34 (1), pp. 843-852