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TECHNICAL PAPERS

Experimental and Numerical Analysis of Transient Liquid Slug Motion in a Voided Line

[+] Author and Article Information
Zafer Bozkus, Özgür Uǧraş Baran, Metin Ger

Hydromechanics Lab., Civil Eng. Dept., Middle East Technical University, 06531 Ankara, Turkey

J. Pressure Vessel Technol 126(2), 241-249 (May 05, 2004) (9 pages) doi:10.1115/1.1688781 History: Received April 10, 2001; Revised September 02, 2003; Online May 05, 2004
Copyright © 2004 by ASME
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References

Fenton, R. M., 1989, “The Forces at a Pipe Bend Due to the Clearing of Water Trapped Upstream,” Master thesis, Department of Mechanical Engineering, Massachusetts Institute of Technology.
Fenton, R. M., and Griffith, P., 1990, “The Force at a Pipe Bend Due to the Clearing Of Water Trapped Upstream,” Transient Thermal Hydraulics and Resulting Loads on Vessel and Piping Systems, PVP, ASME, New York, 190 , pp. 59–67.
Bozkus, Z., 1991, “The Hydrodynamics of an Individual Transient Slug in a Voided Line,” Ph.D. dissertation, Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI, USA.
Bozkus, Z., and Wiggert, D. C., 1991, “Slug Motion and Impact in a Voided Line,” Fluid Transients and Fluid Structure Interaction, D.C. Wiggert and F. J. Moody eds., Vol. 224/FED-Vol. 126, ASME, New York, pp. 25–27.
Bozkus, Z., and Wiggert, D. C., 1992, “Hydromechanics of Slug Motion in a Voided Line,” Unsteady Flow and Fluid Transients, R. Bettess and J. Watts, eds., A. A. Balkema, Rotterdam, pp. 77–86.
Bozkus,  Z., and Wiggert,  D. C., 1997, “Liquid Slug Motion in a Voided Line,” J. Fluids Struct., 11, pp. 947–963.
Neumann, A., and Griffith, P., 1992, “Forces on a Pipe Bend Resulting from Clearing a Pool of Liquid Upstream,” Transient Thermal-Hydraulics and Structural Mechanics, ASME PVP Vol. 231, ASME, New York.
Yang,  J., and Wiggert,  D. C., 1998, “Analysis of Liquid Slug Motion in a Voided Line,” ASME J. Pressure Vessel Technol., 120, pp. 74–80.
Baran, Özgür Uǧraş, 1999, “Experimental and Numerical Analysis of the Liquid Slug Motion in a Voided Line,” M.Sc. thesis, Department of Civil Engineering, Middle East Technical University, Ankara, Turkey.
Wylie, E. B., and Streeter, V. L., 1984, Fluid Transients, FEB Press.
Daugherty, R. L., Franzini, J. B., and Finnemore, E. J., 1985, Fluid Mechanics with Engineering Applications, McGraw-Hill.
Eleuterio, F., and Eleuterio, F.T., 1997, Rieman Solvers and Numerical Methods for Fluid Dynamics: A Practical Introduction, Springer-Verlag, Heidelberg-Berlin, pp. 87–89.
Izenson, G. M., and Rothe, H. P., 1988, “Waterhammer due to Liquid Slugs in RCS Vent Lines,” TM-1257, Technical Memorandum prepared for CREARE Inc., Hanover, NH.
Taylor, G. I., 1963, “The Instability of Liquid Surfaces When Accelerated in a Direction Perpendicular to Their Planes,” The Scientific Papers of G. I. Taylor, Vol. 3, Cambridge University Press.

Figures

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Control volume for the slug in the pipe
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Control volume for the moment the slug hits the elbow
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Location of the transducer at the elbow
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Normalized readings for the experiments and the overall mean
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Pressure history at the elbow for 24 kg, (Ls≈3 m)
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Pressure history at the elbow for 32 kg, (Ls≈4 m)
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Pressure history at the elbow for 40 kg, (Ls≈5 m)
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Pressure history at the elbow for 48 kg, (Ls≈6 m)
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Relationship between dimensionless parameters
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Comparison of Bozkus’ data and that of the present study
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Comparison of observations with the numerical model based on slug mass
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Comparison of observations with the numerical model based on tank pressure
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Normalized force versus dispersion distance
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Inclined liquid slug with uniformly distributed forces applied on the slug tail

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