Exploring the bifurcation between sedimentation versus scour onset below pipelines in unidirectional currents

    Research output: Chapter in Book/Conference paperConference paper

    4 Citations (Scopus)

    Abstract

    The onset of tunnel scour beneath offshore pipelines has been previously documented to result from a phenomenon known as piping, in which the hydrodynamic pressure difference across a pipeline causes a sufficient pressure gradient within the soil under the pipe to result in floatation or suspension of downstream sediment particles. The change in propensity for onset of tunnel scour due to sedimentation around the pipe has also been previously noted. This paper explores the potential for predicting the cumulative sedimentation around a pipeline in unidirectional currents using a more fundamental approach than has previously been described in the literature. The results of this approach are compared to model pipeline experiments to see how well the predictions explain the observed changes in sedimentation and the associated effects of sedimentation on the potential for tunnel scour. © 2016 Taylor & Francis Group, London.
    Original languageEnglish
    Title of host publicationScour and Erosion
    Subtitle of host publicationProceedings of the 8th International Conference on Scour and Erosion
    EditorsJohn Harris, Richard Whitehouse, Sarah Moxon
    PublisherTaylor & Francis
    Pages201–211
    ISBN (Electronic)978-1-315-37504-5
    ISBN (Print)978-1-138-02979-8
    DOIs
    Publication statusPublished - 2016
    Event8th International Conference on Scour and Erosion - Oxford, United Kingdom
    Duration: 12 Sep 201615 Sep 2016

    Conference

    Conference8th International Conference on Scour and Erosion
    Abbreviated titleICSE 2016
    CountryUnited Kingdom
    CityOxford
    Period12/09/1615/09/16

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  • Cite this

    Griffiths, T., Draper, S., Sun, W., White, D., Cheng, L., & An, H. (2016). Exploring the bifurcation between sedimentation versus scour onset below pipelines in unidirectional currents. In J. Harris, R. Whitehouse, & S. Moxon (Eds.), Scour and Erosion: Proceedings of the 8th International Conference on Scour and Erosion (pp. 201–211). Taylor & Francis. https://doi.org/10.1201/9781315375045-25