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http://dx.doi.org/10.5407/JKSV.2013.11.1.034

Visualization of Gas/liquid Ejector Flow and Void Fraction Measurement using Fiber Optic Probe  

Choi, Sung Hwan (부산대학교 일반대학원 기계공학과)
Ji, Ho Seong (부산대학교 기계공학부)
Kim, Kyung Chun (부산대학교 기계공학부)
Publication Information
Journal of the Korean Society of Visualization / v.11, no.1, 2013 , pp. 34-40 More about this Journal
Abstract
Gas/liquid two-phase ejector is a device without moving parts, in which liquid is used to drive gas of a low-pressure source. In this paper, the hydrodynamic characteristics of a vertical down type two-phase ejector were studied using an air-water loop system. Entrained air flow rates were measured with inlet and outlet pressures of the ejector with varying water flow rate. Homogeneous bubbly flows in the discharge pipe were confirmed by the high speed flow visualization method. Quantitative measurements of void fraction were made using a newly developed fiber optic probe system.
Keywords
Two-Phase Flow; Ejector; Flow Visualization; Fiber optic probe; Void fraction;
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1 Shonnard, D. R. and Hiew, D. S., 2000, "Comparative Environmental Assessments of VOC Recovery and Recycle Design Alternatives for a Gaseous Waste Stream", Environ. Sci. Technol., Vol. 34, pp. 5222-5228.   DOI   ScienceOn
2 Matros, Y. S. and Bunimovich, G. A., 1995, "Control of Volatile Organic Compounds by the Catalytic Reverse Process", Ind. Eng. Chem. Res., Vol. 34, pp. 1630-1640.   DOI   ScienceOn
3 Witte, J. H. 1969," Mixing shocks in two-phase flow", J. Fluid Mech. 36, pp. 639-655.   DOI
4 Cunningham, R. G., Dopkin, R. G., 1974, "Jet Breakup and Mixing Throat Lengths for the Liquid Jet Gas Pump", Transactions of the ASME, pp. 216-226.
5 Rahman, F. Umesh, D. B. Subbarao, D. and Ramasamy, M., 2010, "Enhancement of entrainment rates in liquid-gas ejectors", Chem. Eng. Processing., Vol. 49, pp. 1128-1135.   DOI   ScienceOn
6 Julia, J. E., Harteveld, W. K., Mudde, R.F., Akker, E. A., 2005, "On the accuracy of the void fraction measurements using optical probes in bubbly flows", Rev. Sci. Instrum., Vol. 76, 035103.   DOI   ScienceOn
7 Rojas, G. and Loewen, M. R., 2007, "Fiber-optic probe measurements of void fraction and bubble size distributions beneath breaking waves", Exp. Fluids, Vol. 43, pp. 895-906.   DOI
8 Hamed, F, A, and Bruun, H, H, 1997, "An optical probe for measurements in liquid-liquid two-phase flow", Meas. Sci. & Technol., Vol. 8, pp. 1122-1132.   DOI   ScienceOn