Boundary layer flow beneath an internal solitary wave of elevation

M. Carr, P.A. Davies

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    The wave-induced flow over a fixed bottom boundary beneath an internal solitary wave of elevation propagating in an unsheared, two-layer, stably stratified fluid is investigated experimentally. Measurements of the velocity field close to the bottom boundary are presented to illustrate that in the lower layer the fluid velocity near the bottom reverses direction as the wave decelerates while higher in the water column the fluid velocity is in the same direction as the wave propagation. The observation is similar in nature to that for wave-induced flow beneath a surface solitary wave. Contrary to theoretical predictions for internal solitary waves, no evidence for either boundary layer separation or vortex formation is found beneath the front half of tje wave in the adverse pressure gradient region of the now. (C) 2010 American Institute of Physics. [doi: 10.1063/13327289]

    Original languageEnglish
    Article number026601
    Pages (from-to)-
    Number of pages8
    JournalPhysics of Fluids
    Volume22
    Issue number2
    DOIs
    Publication statusPublished - Feb 2010

    Keywords

    • INDUCED GLOBAL INSTABILITY
    • SEDIMENT RESUSPENSION
    • NUMERICAL-SIMULATION
    • LAMINAR SEPARATION
    • SHELF
    • SLOPE

    Cite this

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    title = "Boundary layer flow beneath an internal solitary wave of elevation",
    abstract = "The wave-induced flow over a fixed bottom boundary beneath an internal solitary wave of elevation propagating in an unsheared, two-layer, stably stratified fluid is investigated experimentally. Measurements of the velocity field close to the bottom boundary are presented to illustrate that in the lower layer the fluid velocity near the bottom reverses direction as the wave decelerates while higher in the water column the fluid velocity is in the same direction as the wave propagation. The observation is similar in nature to that for wave-induced flow beneath a surface solitary wave. Contrary to theoretical predictions for internal solitary waves, no evidence for either boundary layer separation or vortex formation is found beneath the front half of tje wave in the adverse pressure gradient region of the now. (C) 2010 American Institute of Physics. [doi: 10.1063/13327289]",
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    Boundary layer flow beneath an internal solitary wave of elevation. / Carr, M.; Davies, P.A.

    In: Physics of Fluids, Vol. 22, No. 2, 026601, 02.2010, p. -.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Boundary layer flow beneath an internal solitary wave of elevation

    AU - Carr, M.

    AU - Davies, P.A.

    PY - 2010/2

    Y1 - 2010/2

    N2 - The wave-induced flow over a fixed bottom boundary beneath an internal solitary wave of elevation propagating in an unsheared, two-layer, stably stratified fluid is investigated experimentally. Measurements of the velocity field close to the bottom boundary are presented to illustrate that in the lower layer the fluid velocity near the bottom reverses direction as the wave decelerates while higher in the water column the fluid velocity is in the same direction as the wave propagation. The observation is similar in nature to that for wave-induced flow beneath a surface solitary wave. Contrary to theoretical predictions for internal solitary waves, no evidence for either boundary layer separation or vortex formation is found beneath the front half of tje wave in the adverse pressure gradient region of the now. (C) 2010 American Institute of Physics. [doi: 10.1063/13327289]

    AB - The wave-induced flow over a fixed bottom boundary beneath an internal solitary wave of elevation propagating in an unsheared, two-layer, stably stratified fluid is investigated experimentally. Measurements of the velocity field close to the bottom boundary are presented to illustrate that in the lower layer the fluid velocity near the bottom reverses direction as the wave decelerates while higher in the water column the fluid velocity is in the same direction as the wave propagation. The observation is similar in nature to that for wave-induced flow beneath a surface solitary wave. Contrary to theoretical predictions for internal solitary waves, no evidence for either boundary layer separation or vortex formation is found beneath the front half of tje wave in the adverse pressure gradient region of the now. (C) 2010 American Institute of Physics. [doi: 10.1063/13327289]

    KW - INDUCED GLOBAL INSTABILITY

    KW - SEDIMENT RESUSPENSION

    KW - NUMERICAL-SIMULATION

    KW - LAMINAR SEPARATION

    KW - SHELF

    KW - SLOPE

    U2 - 10.1063/1.3327289

    DO - 10.1063/1.3327289

    M3 - Article

    VL - 22

    SP - -

    JO - Physics of Fluids

    JF - Physics of Fluids

    SN - 1070-6631

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    M1 - 026601

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