Seabed shear stress amplification around subsea pipelines: Part 2, 2D parametric study with waves and combined waves/currents

T. Griffiths, F. Zhao, M. Kalkhoven, W. Shen, M. Xu, Z. Zan, Jeremy Leggoe

    Research output: Chapter in Book/Conference paperConference paper

    3 Citations (Scopus)

    Abstract

    © 2015 Taylor & Francis Group, London. This paper presents the results of 2D CFD modelling using ANSYS Fluent, which has been undertaken for a parametric range of over 200 cases, including over 60 different seabed geometries, pipe diameters and seabed roughnesses as well as a range of steady current, wave and combined wave/current cases. Analysis of the results focusses on evaluation of seabed shear stress amplification factors compared to far-field ambient values under wave and combined wave/current conditions for both gap (spanning) and non-gap geometries. The results have relevance to the prediction of both scour and sedimentation (backfilling) under both clear-water and live-bed conditions, particularly for insights into the importance of seabed profile changes due to long-exposure slow-processes. The results have relevance to improving models of equilibrium scour depths, especially in the presence of seabed berms and/or partial pipeline lowering.
    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
    Pages337-344
    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

    Fingerprint

    shear stress
    amplification
    scour
    geometry
    roughness
    pipe
    sedimentation
    prediction
    modeling
    water

    Cite this

    Griffiths, T., Zhao, F., Kalkhoven, M., Shen, W., Xu, M., Zan, Z., & Leggoe, J. (2015). Seabed shear stress amplification around subsea pipelines: Part 2, 2D parametric study with waves and combined waves/currents. In Scour and Erosion - Proceedings of the 7th International Conference on Scour and Erosion, ICSE 2014 (Vol. N/A, pp. 337-344). United Kingdom: CRC Press. https://doi.org/10.1201/b17703-42
    Griffiths, T. ; Zhao, F. ; Kalkhoven, M. ; Shen, W. ; Xu, M. ; Zan, Z. ; Leggoe, Jeremy. / Seabed shear stress amplification around subsea pipelines: Part 2, 2D parametric study with waves and combined waves/currents. Scour and Erosion - Proceedings of the 7th International Conference on Scour and Erosion, ICSE 2014. Vol. N/A United Kingdom : CRC Press, 2015. pp. 337-344
    @inproceedings{2fffa7f2f4044a7b9ead89798a40aeed,
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    abstract = "{\circledC} 2015 Taylor & Francis Group, London. This paper presents the results of 2D CFD modelling using ANSYS Fluent, which has been undertaken for a parametric range of over 200 cases, including over 60 different seabed geometries, pipe diameters and seabed roughnesses as well as a range of steady current, wave and combined wave/current cases. Analysis of the results focusses on evaluation of seabed shear stress amplification factors compared to far-field ambient values under wave and combined wave/current conditions for both gap (spanning) and non-gap geometries. The results have relevance to the prediction of both scour and sedimentation (backfilling) under both clear-water and live-bed conditions, particularly for insights into the importance of seabed profile changes due to long-exposure slow-processes. The results have relevance to improving models of equilibrium scour depths, especially in the presence of seabed berms and/or partial pipeline lowering.",
    author = "T. Griffiths and F. Zhao and M. Kalkhoven and W. Shen and M. Xu and Z. Zan and Jeremy Leggoe",
    year = "2015",
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    Griffiths, T, Zhao, F, Kalkhoven, M, Shen, W, Xu, M, Zan, Z & Leggoe, J 2015, Seabed shear stress amplification around subsea pipelines: Part 2, 2D parametric study with waves and combined waves/currents. in Scour and Erosion - Proceedings of the 7th International Conference on Scour and Erosion, ICSE 2014. vol. N/A, CRC Press, United Kingdom, pp. 337-344, 7th International Conference on Scour and Erosion, Perth, Australia, 2/12/14. https://doi.org/10.1201/b17703-42

    Seabed shear stress amplification around subsea pipelines: Part 2, 2D parametric study with waves and combined waves/currents. / Griffiths, T.; Zhao, F.; Kalkhoven, M.; Shen, W.; Xu, M.; Zan, Z.; Leggoe, Jeremy.

    Scour and Erosion - Proceedings of the 7th International Conference on Scour and Erosion, ICSE 2014. Vol. N/A United Kingdom : CRC Press, 2015. p. 337-344.

    Research output: Chapter in Book/Conference paperConference paper

    TY - GEN

    T1 - Seabed shear stress amplification around subsea pipelines: Part 2, 2D parametric study with waves and combined waves/currents

    AU - Griffiths, T.

    AU - Zhao, F.

    AU - Kalkhoven, M.

    AU - Shen, W.

    AU - Xu, M.

    AU - Zan, Z.

    AU - Leggoe, Jeremy

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    N2 - © 2015 Taylor & Francis Group, London. This paper presents the results of 2D CFD modelling using ANSYS Fluent, which has been undertaken for a parametric range of over 200 cases, including over 60 different seabed geometries, pipe diameters and seabed roughnesses as well as a range of steady current, wave and combined wave/current cases. Analysis of the results focusses on evaluation of seabed shear stress amplification factors compared to far-field ambient values under wave and combined wave/current conditions for both gap (spanning) and non-gap geometries. The results have relevance to the prediction of both scour and sedimentation (backfilling) under both clear-water and live-bed conditions, particularly for insights into the importance of seabed profile changes due to long-exposure slow-processes. The results have relevance to improving models of equilibrium scour depths, especially in the presence of seabed berms and/or partial pipeline lowering.

    AB - © 2015 Taylor & Francis Group, London. This paper presents the results of 2D CFD modelling using ANSYS Fluent, which has been undertaken for a parametric range of over 200 cases, including over 60 different seabed geometries, pipe diameters and seabed roughnesses as well as a range of steady current, wave and combined wave/current cases. Analysis of the results focusses on evaluation of seabed shear stress amplification factors compared to far-field ambient values under wave and combined wave/current conditions for both gap (spanning) and non-gap geometries. The results have relevance to the prediction of both scour and sedimentation (backfilling) under both clear-water and live-bed conditions, particularly for insights into the importance of seabed profile changes due to long-exposure slow-processes. The results have relevance to improving models of equilibrium scour depths, especially in the presence of seabed berms and/or partial pipeline lowering.

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    Griffiths T, Zhao F, Kalkhoven M, Shen W, Xu M, Zan Z et al. Seabed shear stress amplification around subsea pipelines: Part 2, 2D parametric study with waves and combined waves/currents. In Scour and Erosion - Proceedings of the 7th International Conference on Scour and Erosion, ICSE 2014. Vol. N/A. United Kingdom: CRC Press. 2015. p. 337-344 https://doi.org/10.1201/b17703-42