Prediction of Equilibrium Scour Holes Using Optimization Procedures

Xerxes Mandviwalla, Jesper Roland Kjærgaard Qwist, Erik Damgaard Christensen

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    Abstract

    This paper presents an optimization procedure that finds the equilibrium scour depth under a pipeline. Even though much knowledge on scour is available for the most typical marine structures such as a vertical circular monopile of a horizontal pipelines the calculation of the scour depth complex and time-consuming as the transient solution is often modelled as well. In this paper we present a optimization procedure that combined with a computational fluid dynamics, and a model of the bed load finds the equilibrium shape of a scour hole. This can potentially speed up the calculation of the shape of the equilibrium scour hole with a factor of 100. However, it comes with a coast as we will not model the transition and the time scale of the scour hole development.
    Original languageEnglish
    Title of host publicationCoastal Engineering Proceedings
    EditorsPatrick Lynett
    Number of pages9
    Publication date2020
    Article number36V
    ISBN (Electronic)978-0-9896611-5-7
    DOIs
    Publication statusPublished - 2020
    EventVirtual International Conference on Coastal Engineering (VICCE 2020) - Virtual event
    Duration: 6 Oct 20209 Oct 2020

    Conference

    ConferenceVirtual International Conference on Coastal Engineering (VICCE 2020)
    LocationVirtual event
    Period06/10/202009/10/2020

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