Numerical Study of Turbulent Characteristics and Aeration Patterns in Breaking Surge Waves

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dc.contributor.advisorKarimpour, Shooka
dc.contributor.authorLi, Zhuoran
dc.date.accessioned2022-08-08T15:43:09Z
dc.date.available2022-08-08T15:43:09Z
dc.date.copyright2022-01-14
dc.date.issued2022-08-08
dc.date.updated2022-08-08T15:43:09Z
dc.degree.disciplineCivil Engineering
dc.degree.levelMaster's
dc.degree.nameMASc - Master of Applied Science
dc.description.abstractPositive breaking surge waves are caused by a sudden change in flow. 3D numerical simulation provides a holistic approach to simulate the turbulent behaviour behind a breaking surge wave. A combination of Volume of Fluid (VOF) method and Large Eddy Simulation (LES) is utilized for Froude numbers ranging from 1.71 to 2.49. Computational mesh is refined sufficiently to improve the LES quality by resolving at least 90% of the total Turbulent Kinetic Energy (TKE). At surge toe, strong aeration and surface perturbation are observed caused by intense TKE in the area. Velocity perturbations show positive turbulent production in xy-plane rather than yz-plane as the shear instability exists in xy-plane. Finally, the vortices start from a 1D structure at the toe and exhibit rod shape upstream in anisotropy maps. This study highlights the role of instability mechanisms in the formation of a breaking surge wave.
dc.identifier.urihttp://hdl.handle.net/10315/39565
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectCivil engineering
dc.subject.keywordsBreaking surge waves
dc.subject.keywordsTurbulent structure
dc.subject.keywordsAir entrainment
dc.subject.keywordsLarge Eddy Simulation
dc.subject.keywordsNumerical simulation
dc.titleNumerical Study of Turbulent Characteristics and Aeration Patterns in Breaking Surge Waves
dc.typeElectronic Thesis or Dissertation

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