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TECHNICAL PAPERS: Gas Turbines: Oil and Gas Applications

Resistance Reduction in Pulsating Turbulent Pipe Flows

[+] Author and Article Information
Marcello Manna

Dipartiamento di Ingegneria Meccanica per l’Energetica, Universitá degli Studi di Napoli “Federico II,” Via Claudio 21, 80125 Naples, Italye-mail: manna@unina.it

Andrea Vacca

Dipartimento di Ingegneria Civile, Seconda Universitá di Napoli, Via Roma 29, 81031 Aversa, Italye-mail: vacca@unina.it

J. Eng. Gas Turbines Power 127(2), 410-417 (Apr 15, 2005) (8 pages) doi:10.1115/1.1789511 History: Received October 01, 2002; Revised March 01, 2003; Online April 15, 2005
Copyright © 2005 by ASME
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References

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Tu,  S. W., and Ramaprian,  B. R., 1983, “Fully Developed Periodic Turbulent Pipe Flow. Part 1. Main Experimental Results and Comparison With Predictions,” J. Fluid Mech., 137, pp. 31–58.
Tu,  S. W., and Ramaprian,  B. R., 1983, “Fully Developed Periodic Turbulent Pipe Flow. Part 2. The Detailed Structure of the Flow,” J. Fluid Mech., 137, pp. 59–81.
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Tardu,  S. F., and Binder,  G., 1993, “Wall Shear Stress Modulation in Unsteady Turbulent Channel Flow With High Imposed Frequencies,” Phys. Fluids, 5, pp. 2028–2034.
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Eggels,  J. G. M., Unger,  F., Weiss,  M. H., Westerweel,  J., Adrian,  R. J., Friedrich,  R., and Nieuwstadt,  F. T. M., 1994, “Fully Developed Turbulent Pipe Flow: A Comparison Between Direct Numerical Simulation and Experiments,” J. Fluid Mech., 268, pp. 175–209.
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Figures

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Mean turbulent intensities; • experiments 1; □ LES 9
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Turbulent and viscous shear stress
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Phase averaged velocity profiles in inner coordinates (Λ=1)
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Phase averaged velocity profiles in inner coordinates (Λ=11)
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Phase averaged oscillating streamwise velocity profiles
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Phase averaged ([[dashed_line]]) and mean (–) turbulent intensities for Λ=1
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Phase averaged ([[dashed_line]]) and mean (–) turbulent intensities for Λ=11
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Phase averaged ([[dashed_line]]) and mean (–) turbulent shear stress (resolved+SGS) for Λ=1
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Phase averaged ([[dashed_line]]) and mean (–) turbulent shear stress (resolved+SGS) for Λ=11
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Temporal evolution of the phase averaged oscillating streamwise velocity component (〈u〉−ū)/ū; top Λ=1, y+=13; bottom Λ=11, y+=14.8
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Temporal evolution of the phase averaged Reynolds stresses (〈uiuj〉−uiuj)/uiuj; Λ=1, y+=13; Λ=11, y+=14.8; (a) i=j=1; (b) i=j=2; (c) i=j=3; (d) i=1,j=2
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Streamwise velocity profiles (top); Reynolds stress trace (bottom). • experiments 14; □ DNS 14.
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Turbulent and viscous stresses (top); SGS stresses (bottom); □ DNS 14

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