Experimental investigation of Lagrangian structure functions in turbulence

Jacob Berg, Søren Ott, Jakob Mann, Beat Luthi

    Research output: Contribution to journalJournal articleResearchpeer-review

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    Abstract

    Lagrangian properties obtained from a particle tracking velocimetry experiment in a turbulent flow at intermediate Reynolds number are presented. Accurate sampling of particle trajectories is essential in order to obtain the Lagrangian structure functions and to measure intermittency at small temporal scales. The finiteness of the measurement volume can bias the results significantly. We present a robust way to overcome this obstacle. Despite no fully developed inertial range, we observe strong intermittency at the scale of dissipation. The multifractal model is only partially able to reproduce the results.
    Original languageEnglish
    JournalPhysical Review E
    Volume80
    Issue number2
    Pages (from-to)026316
    ISSN2470-0045
    DOIs
    Publication statusPublished - 2009

    Bibliographical note

    Copyright 2009 American Physical Society

    Keywords

    • Wind energy
    • Meteorology

    Cite this

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    title = "Experimental investigation of Lagrangian structure functions in turbulence",
    abstract = "Lagrangian properties obtained from a particle tracking velocimetry experiment in a turbulent flow at intermediate Reynolds number are presented. Accurate sampling of particle trajectories is essential in order to obtain the Lagrangian structure functions and to measure intermittency at small temporal scales. The finiteness of the measurement volume can bias the results significantly. We present a robust way to overcome this obstacle. Despite no fully developed inertial range, we observe strong intermittency at the scale of dissipation. The multifractal model is only partially able to reproduce the results.",
    keywords = "Wind energy, Meteorology, Meteorologi, Vindenergi",
    author = "Jacob Berg and S{\o}ren Ott and Jakob Mann and Beat Luthi",
    note = "Copyright 2009 American Physical Society",
    year = "2009",
    doi = "10.1103/PhysRevE.80.026316",
    language = "English",
    volume = "80",
    pages = "026316",
    journal = "Physical Review E (Statistical, Nonlinear, and Soft Matter Physics)",
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    publisher = "American Physical Society",
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    Experimental investigation of Lagrangian structure functions in turbulence. / Berg, Jacob; Ott, Søren; Mann, Jakob; Luthi, Beat.

    In: Physical Review E, Vol. 80, No. 2, 2009, p. 026316.

    Research output: Contribution to journalJournal articleResearchpeer-review

    TY - JOUR

    T1 - Experimental investigation of Lagrangian structure functions in turbulence

    AU - Berg, Jacob

    AU - Ott, Søren

    AU - Mann, Jakob

    AU - Luthi, Beat

    N1 - Copyright 2009 American Physical Society

    PY - 2009

    Y1 - 2009

    N2 - Lagrangian properties obtained from a particle tracking velocimetry experiment in a turbulent flow at intermediate Reynolds number are presented. Accurate sampling of particle trajectories is essential in order to obtain the Lagrangian structure functions and to measure intermittency at small temporal scales. The finiteness of the measurement volume can bias the results significantly. We present a robust way to overcome this obstacle. Despite no fully developed inertial range, we observe strong intermittency at the scale of dissipation. The multifractal model is only partially able to reproduce the results.

    AB - Lagrangian properties obtained from a particle tracking velocimetry experiment in a turbulent flow at intermediate Reynolds number are presented. Accurate sampling of particle trajectories is essential in order to obtain the Lagrangian structure functions and to measure intermittency at small temporal scales. The finiteness of the measurement volume can bias the results significantly. We present a robust way to overcome this obstacle. Despite no fully developed inertial range, we observe strong intermittency at the scale of dissipation. The multifractal model is only partially able to reproduce the results.

    KW - Wind energy

    KW - Meteorology

    KW - Meteorologi

    KW - Vindenergi

    U2 - 10.1103/PhysRevE.80.026316

    DO - 10.1103/PhysRevE.80.026316

    M3 - Journal article

    VL - 80

    SP - 026316

    JO - Physical Review E (Statistical, Nonlinear, and Soft Matter Physics)

    JF - Physical Review E (Statistical, Nonlinear, and Soft Matter Physics)

    SN - 2470-0045

    IS - 2

    ER -