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TECHNICAL PAPERS

Analysis of Transient Flow in Pipes With Expanding or Contracting Sections

[+] Author and Article Information
Adam Adamkowski

Institute of Fluid Flow Machinery, Polish Academy of Sciences, 80-952 Gdansk, Poland

J. Fluids Eng 125(4), 716-722 (Aug 27, 2003) (7 pages) doi:10.1115/1.1593703 History: Received April 05, 2000; Revised February 11, 2003; Online August 27, 2003

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References

Betamio de Almeida, A., and Koelle, E., 1992, Fluid Transients in Pipe Networks, CMP Elsevier Applied Science, New York.
Chaudhry, M. H., 1979, Applied Hydraulic Transients, Van Nostrand Reinhold, New York.
Wylie, E. B., and Streeter, L. V., 1978, Fluid Transients, McGraw-Hill, New York.
Wylie, E. B., and Streeter, L. V., 1993, Fluid Transients in Systems, Prentice-Hall, Englewood Cliffs, NJ.
Adamkowski, A., 1988, “Transient Flow in Pipeline Systems of Hydraulic Turbomachines,” Ph.D. thesis, Institute of Fluid Flow Machinery of the Polish Academy of Sciences (in Polish).
Adamkowski, A., 1996, “Theoretical and Experimental Investigations of Waterhammer Attenuation by Cut-Off and By-Pass Valves in Pipeline Systems of Hydraulic Turbomachines,” Copybooks of the Institute of Fluid Flow Machinery of the Polish Academy of Sciences, No. 461/1423/96, Gdańsk (in Polish).
Budny,  D. D., Wiggert,  D. C., and Hatfield,  F. J., 1991, “The Influence of Structural Damping on Internal Pressure During a Transient Pipe Flow,” ASME J. Fluids Eng., 113, pp. 424–429.
Fan,  D., and Tijsseling,  A., 1992, “Fluid-Structure Interaction With Cavitation in Transient Pipe Flows,” ASME J. Fluids Eng., 114 .
Tijsseling,  A. S., 1996, “Fluid-Structure Interaction in Liquid-Filled Pipe Systems: A Review,” J. Fluids Struct., 10, pp. 109–146.
Wiggert,  D. C., Hatfield,  F. J., and Stuckenbruck,  S., 1987, “Analysis of Liquid and Structural Transients by the Method of Characteristics,” ASME J. Fluids Eng., 109, pp. 161–165.
Wan,  Zhang-Min, and Tan,  Soon Keat, 1997, “Coupled Analysis of Fluid Transients and Structural Dynamic Responses of a Pipeline Systems,” J. Hydraul. Res., 35(1), pp. 119–131.
Elansary,  A. S., Chaudhry,  M. H., and Silva,  W., 1994, “Numerical and Experimental Investigation of Transient Pipe Flow,” J. Hydraul. Res., 32 (5).
Vardy,  A. E., and Hwang,  Kuo-Lun, 1991, “A Characteristics Model of Transient Friction in Pipes,” J. Hydraul. Res., 29 (5).
Vardy,  A. E., Brown,  J. M. B., and Hwang,  Kuo-Lun, 1994, “A Weighting Function Model of Transient Turbulent Pipe Friction,” J. Hydraul. Res., 31 (4).
Zarzycki, Z., “Hydraulic Resistance of Unsteady Liquid Flow in Pipes,” Copybooks of Technical Univ. Szczecin, No. 516/1994 (in Polish).
Bergant,  A., and Simpson,  A. R., 1999, “Pipeline Column Separation Flow Regimes,” J. Hydraul. Res., 125 (8).
Moody,  F. J., 1991, “A Survey of Fluid Transient Studies—1991,” ASME J. Pressure Vessel Technol., 113 .
Simpson,  A. R., and Bergant,  A., 1994, “Numerical Comparison of Pipe-Column Separation Models,” J. Hydraul. Eng., 120 (3).
Bednarczyk,  S., 1974, “Unsteady Fluid Flow in Pressure Pipelines,” Archives of Hydraulic Engineering, XXI (4) (in Polish).

Figures

Grahic Jump Location
Grid of characteristic lines described by equations dx/dt=a and dx/dt=−a for the assumed time step Δt
Grahic Jump Location
Differences in the prediction of pressure rises in cone-shaped pipes with different expanding coefficients obtained by means of the methods under comparison
Grahic Jump Location
Comparison of pressure rises (ΔHz) obtained using the method of equivalent pipes for different pipe geometries (linear variation of diameter, linear variation of cross section area, and exponential variation of cross section area) and calculated (ΔHdm) for a uniform pipe with diameter equal to the arithmetic average of diameters at both ends of the segment under consideration
Grahic Jump Location
Comparison of pressure changes (ΔHz) obtained using the method of equivalent pipes for different pipe geometries (linear variation of diameter, linear variation of cross section area, and exponential variation of cross section area) and calculated (ΔHam) for a uniform pipe with cross section area equal arithmetic average of cross-section areas at both ends of the segment under consideration

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