Scour-inducing flow around gravity anchors astride pipelines in currents

X. Zhao, Liang Cheng, M. Zhao

    Research output: Chapter in Book/Conference paperConference paper

    1 Citation (Scopus)

    Abstract

    © 2015 Taylor & Francis Group, London. This study simulated steady currents travelling past gravity anchors astride pipelines wallmounted on an immobile bed. Three-dimensional governing equations were solved with a Petrov–Galerkin finite element method. Three cases were modeled with 90, 45 and 0 degree angles of attack respectively at a constant pipe Reynolds number of 103. Bed shear stress amplification patterns were first revealed and found to be in good agreement with onset scour profiles from physical modeling. Then the responsible scour-inducing flow features were visualized comprising horseshoe vortices, lee-wake vortices and streamline deflections.
    Original languageEnglish
    Title of host publicationScour and Erosion - Proceedings of the 7th International Conference on Scour and Erosion, ICSE 2014
    Place of PublicationUnited Kingdom
    PublisherCRC Press
    Pages741-751
    VolumeN/A
    ISBN (Electronic)9781315723594
    ISBN (Print)9781138027329
    DOIs
    Publication statusPublished - 2015
    Event7th International Conference on Scour and Erosion - Perth, Australia
    Duration: 2 Dec 20144 Dec 2014

    Conference

    Conference7th International Conference on Scour and Erosion
    CountryAustralia
    CityPerth
    Period2/12/144/12/14

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