Low-drag events in transitional wall-bounded turbulence

Richard D. Whalley, Jae Sung Park, Anubhav Kushwaha, David J.C. Dennis, Michael D. Graham, Robert J. Poole

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Intermittency of low-drag pointwise wall shear stress measurements within Newtonian turbulent channel flow at transitional Reynolds numbers (friction Reynolds numbers 70 - 130) is characterized using experiments and simulations. Conditional mean velocity profiles during low-drag events closely approach that of a recently discovered nonlinear traveling wave solution; both profiles are near the so-called maximum drag reduction profile, a general feature of turbulent flow of liquids containing polymer additives (despite the fact that all results presented are for Newtonian fluids only). Similarities between temporal intermittency in small domains and spatiotemporal intermittency in large domains is thereby found.

Original languageEnglish (US)
Article number034602
JournalPhysical Review Fluids
Volume2
Issue number3
DOIs
StatePublished - Mar 1 2017

Fingerprint

Intermittency
Drag
Turbulence
Reynolds number
Drag reduction
Stress measurement
Channel flow
Turbulent flow
Turbulent Channel Flow
Drag Reduction
Shear stress
Flow of fluids
Polymers
Wall Shear Stress
Newtonian Fluid
Nonlinear Waves
Friction
Velocity Profile
Traveling Wave Solutions
Turbulent Flow

ASJC Scopus subject areas

  • Computational Mechanics
  • Modeling and Simulation
  • Fluid Flow and Transfer Processes

Cite this

Whalley, R. D., Park, J. S., Kushwaha, A., Dennis, D. J. C., Graham, M. D., & Poole, R. J. (2017). Low-drag events in transitional wall-bounded turbulence. Physical Review Fluids, 2(3), [034602]. https://doi.org/10.1103/PhysRevFluids.2.034602

Low-drag events in transitional wall-bounded turbulence. / Whalley, Richard D.; Park, Jae Sung; Kushwaha, Anubhav; Dennis, David J.C.; Graham, Michael D.; Poole, Robert J.

In: Physical Review Fluids, Vol. 2, No. 3, 034602, 01.03.2017.

Research output: Contribution to journalArticle

Whalley, RD, Park, JS, Kushwaha, A, Dennis, DJC, Graham, MD & Poole, RJ 2017, 'Low-drag events in transitional wall-bounded turbulence', Physical Review Fluids, vol. 2, no. 3, 034602. https://doi.org/10.1103/PhysRevFluids.2.034602
Whalley, Richard D. ; Park, Jae Sung ; Kushwaha, Anubhav ; Dennis, David J.C. ; Graham, Michael D. ; Poole, Robert J. / Low-drag events in transitional wall-bounded turbulence. In: Physical Review Fluids. 2017 ; Vol. 2, No. 3.
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