2020
DOI: 10.3390/app10186501
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Modeling the Slump-Type Landslide Tsunamis Part I: Developing a Three-Dimensional Bingham-Type Landslide Model

Abstract: This paper incorperates Bingham and bi-viscosity rheology models with the Navier–Stokes solver to simulate the dynamics and kinematics processes of slumps for tsunami generation. The rheology models are integrated into a computational fluid dynamics code, Splash3D, to solve the incompressible Navier–Stokes equations with volume of fluid surface tracking algorithm. The change between un-yield and yield phases of the slide material is controlled by the yield stress and yield strain rate in Bingham and bi-viscosi… Show more

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Cited by 5 publications
(8 citation statements)
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“…The boundary conditions are free-slip boundary conditions on the domain boundaries, except for the ceiling boundary, which is a pressure Dirichlet (P = 0) boundary condition. The dynamic viscosities of water and air are 10 −3 Pa s and 10 −5 Pa s respectively, whilst the yield viscosity of the slump is µ B = 50 Pa s. The slump un-yield viscosity µ A is 10 10 Pa s as addressed in Part I [42]. The yield stress of the slump suggested by Assier Rzadkiewicz [16] is τ y = 1000 Pa.…”
Section: Numerical Setupmentioning
confidence: 98%
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“…The boundary conditions are free-slip boundary conditions on the domain boundaries, except for the ceiling boundary, which is a pressure Dirichlet (P = 0) boundary condition. The dynamic viscosities of water and air are 10 −3 Pa s and 10 −5 Pa s respectively, whilst the yield viscosity of the slump is µ B = 50 Pa s. The slump un-yield viscosity µ A is 10 10 Pa s as addressed in Part I [42]. The yield stress of the slump suggested by Assier Rzadkiewicz [16] is τ y = 1000 Pa.…”
Section: Numerical Setupmentioning
confidence: 98%
“…As for the comparisons of the slump shape, Part I [42] presents the 3D validation of the slump slide on the dry land for the detailed comparisons and discussions on the rheology parameters. In Part II, the simulated results are compared with the laboratory data as shown in Figure 2 at t = 0.4 s and 0.8 s. The simulated slump shape is very close to the laboratory data at t = 0.4 s. This indicates that the yield stress of the slump suggested by Assier Rzadkiewicz [16] performs very well at the initial stage of the slump slide.…”
Section: Model Validationmentioning
confidence: 99%
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“…In Kim et al (2020), the authors question the applicability of 2DH models to landslide tsunamis, suggesting that 3D models taking into account the vertical acceleration would produce more accurate results. Over the past two decades, several 3D models based on Navier-Stokes equations have been developed, among them, THETIS (Abadie et al 2008), FLUENT (Biscarini 2010), Fluidity (Davies et al 2011), NHWAVE (Ma et al 2013), TSUNAMI3D (Horrillo et al 2013), Splash3D (Wu et al 2020) and OpenFOAM (Lee et al 2016, Si et al 2018, Romano et al 2020, Lee & Huang 2021. However, an extensive comparison between 2D and 3D models for landslide tsunamis generation is, to the knowledge of the authors of this present study, not available.…”
Section: Introductionmentioning
confidence: 98%