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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

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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