Wind turbulence effects on dune sand transport

    研究成果: Conference article査読

    2 被引用数 (Scopus)

    抄録

    This study involved field experiment of instantaneous wind velocity, angle, and aeolian sand flux on a coastal dune and numerical simulation of spatial wind fields to analyze the effects of wind turbulence on aeolian sand transport. The field data demonstrate that horizontal turbulence intensity is approximated by a power equation of mean horizontal wind velocity and has a negative relationship with the mean wind velocity in various wind conditions. Horizontal turbulence intensity also has a negative relationship with the aeolian sand flux in various wind conditions, indicating the potential for introducing the turbulence intensity into the aeolian sand transport equation. The wind field simulated with a large eddy simulation (LES) model has reasonable wind characteristics consistent with ground elevation change measured in the field. However, results indicate accurate simulation of vertical wind velocity and both horizontal and vertical turbulence intensity is a great challenge compared to simulation of horizontal velocity.

    本文言語English
    ページ(範囲)333-337
    ページ数5
    ジャーナルJournal of Coastal Research
    1
    75
    DOI
    出版ステータスPublished - 2016 3月 1
    イベント14th International Coastal Symposium, ICS 2016 - Sydney, Australia
    継続期間: 2016 3月 62016 3月 11

    ASJC Scopus subject areas

    • 生態学
    • 水の科学と技術
    • 地表過程

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