Abstract
Multiphase phenomena identification in frequency domain through an electrical impedance sensor (EIS) in air–water pipes were analyzed experimentally. The electrical properties between the components were used to settle on the relative volumes of both phases. The selection of the appropriate a.c. frequency is well known to eliminate the capacitive impedance. The EIS is a device whose variable size electrodes were used to measure void fraction and its fluctuations. Measurements were carried out with six electrodes, when air was flowed into a standing water column, producing a bubble chain. Analysis in frequency domain of the electrical impedance signals allowed the spectral power density. This analysis was correlated with observed phenomena through video recording, in order to show that low frequency peaks can be associated to dynamic phenomena, while high frequency peaks could not be clearly correlated to flow particularities.
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References
Bernier RJ (1982) Unsteady two-phase flow instrumentation and measurement. PhD thesis, California Institute of Technology, Pasadena, CA
Cheng H, Hills JH, Azzopardi BJ (2002) Effects of initial bubble size on flow pattern transition in a 28.9 mm diameter column. Int J Multiphase Flow 28:10473–10620
Costigan G, Whalley PB (1997) Slung flow regime identification from dynamic void fraction measurement in vertical air–water flows. Int J Multiphase Flow 23:263–282
Deckwer W, Schumpe A (1993) Improved tools for bubble column reactor design and scale-up. Chem Eng Sci 48(5):889–911
Ma Y, Chung N, Pei B, Lin W, Hsu Y (1991) Two simplifies methods to determine void fraction for two-phase flow. Nucl Technol 94:124–133
Micaelli JC (1982) Propagation d’ondes dans les écoulements diphasiques á bulles á deux constituants. Étude théorique et expérimentale, PhD thesis, L’Université, Grenoble
Rodríguez JC (2006) Ondas de presión en una columna de burbujas, MSc thesis. Universidad Autónoma Metropolitana, México
Rodríguez JC, Soria A (2008) Caracterización de un sensor de impedancia eléctrica (SIE) para la medición de la fracción volumen en una columna de burbujeo, Congreso de Instrumentación SOMI XXIII, Xalapa Veracruz, México
Rodríguez JC, Soria A (2009) Medición de ondas de fracción volumen a través de un sensor de impedancia eléctrica (SIE) en una columna de burbujeo, Congreso de Instrumentación SOMI XXIV, Mérida Yucatán, México
Rodríguez JC, Soria A (2010) Modelos para la caracterización de un sensor de impedancia eléctrica (SIE) en la medición de la fracción volumen en una columna de burbujeo, Congreso del AMIDIQ XXXI, Huatulco Oaxaca, México
Song CH, No HC, Chung MK (1995) Investigation of bubble flow developments and its transition based on the instability of void fraction waves. Int. J. Multiphase Flow 21(3):381–404
Wang Y, Pei B, Lin W (1991) Verification of using a single void fraction sensor to identify two-phase flow patterns. Nucl Technol 95:87–94
Acknowledgments
To CONACyT, by financial support, Grant CB-2005-C01-50379-Y and Academic Scholarship No. 179552 to one of us (JCRS).
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Rodríguez, J.C., Soria, A. (2012). Multiphase Phenomena Identification by Spectral Analysis: Electrical Impedance Sensor Signals in a Bubble Column. In: Klapp, J., Cros, A., Velasco Fuentes, O., Stern, C., Rodriguez Meza, M. (eds) Experimental and Theoretical Advances in Fluid Dynamics. Environmental Science and Engineering(). Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-17958-7_18
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DOI: https://doi.org/10.1007/978-3-642-17958-7_18
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