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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

Figures

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Grid of characteristic lines described by equations dx/dt=a and dx/dt=−a for the assumed time step Δt
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Differences in the prediction of pressure rises in cone-shaped pipes with different expanding coefficients obtained by means of the methods under comparison
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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
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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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