Debris impact under extreme hydrodynamic conditions part 1: Hydrodynamics and impact geometry

Derschum, C.; Nistor, Ioan; Stolle, Jacob; Goseberg, Nils

doi:10.1016/j.coastaleng.2018.08.016

Cited by 36 publications

(21 citation statements)

References 17 publications

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“…Often in experiments a breaking bore is assumed either generated through dam breaks (see e.g. Yeh, 1991;Derschum et al, 2018;Stolle et al, 2018) or as a result of breaking elongated solitary waves (see e.g. Goseberg et al, 2016;Nistor et al, 2017), but a tsunami can run-up in other ways as well.…”

Section: Introductionmentioning

confidence: 99%

Full-scale CFD simulation of tsunamis. Part 1: Model validation and run-up

Larsen

Fuhrman

2019

Coastal Engineering

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Section: Introductionmentioning

confidence: 99%

Full-scale CFD simulation of tsunamis. Part 1: Model validation and run-up

Larsen

Fuhrman

2019

Coastal Engineering

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“…The experiments were performed within the context of a larger experimental protocol examining debris impact forces on a structure (Derschum et al 2018, Stolle et al 2018a, 2018c, 2019. The structure (0.20 m × 0.20 m × 0.80 m) was placed at a distance of 7.03 m from the gate.…”

Section: Methodology 21 Experimental Facilitiesmentioning

confidence: 99%

“…(1) represents the maximum potential impact force on a structure as it assumes that the structure is directly impacted and that it does not displace/deform to absorb a portion of the energy (Stolle et al 2019). Additionally, the impact geometry can significantly influence the impact force (Derschum et al 2018).…”

Section: Introduction 1backgroundmentioning

confidence: 99%

Development of a Probabilistic Framework for Debris Transport and Hazard Assessment in Tsunami-Like Flow Conditions

Stolle

Nistor

Goseberg

et al. 2020

J. Waterway, Port, Coastal, Ocean Eng.

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Past hydraulic and structural design has predominantly used deterministic methods, often neglecting the stochastic nature that underlies transient loading processes. Nowadays, probabilistic design methods have gained wider attention. The accurate estimates of design conditions for structures need to consider the probabilistic properties of the loads. One of the more challenging loads in extreme flooding events is related to debris transport and loading during hydrodynamic hazardous events. While crucial to assess damage on infrastructure as part of the design cycle, field surveys and numerical modeling provide little guidance as to how the motion of debris within these natural disasters can be adequately captured. The study presented herein examines an idealized case regarding the transport of debris entrained during extreme flooding events by evaluating the characteristics of shipping containers motion entrained in a dam-break flow over a flat, horizontal bed. In aiding the promotion of probabilistic methods, this study proposes characteristics of the stochastic properties of debris transport, focussing on the lateral displacement and velocity of debris based on the experimental results. The magnitude of the lateral displacement was shown to strongly correlate with the local hydrodynamic conditions and the initial configuration of the debris. The results of the physical model were then incorporated into a probabilistic framework. The aim for developing this framework is to facilitate debris hazard assessment in extreme flooding event studies.

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“…[1,[12][13][14][15] or on analysing their impact forces during a collision with a structure [16][17][18][19]. More recently Derschum et al [20] and Stolle et al [21,22] studied both processes in conjunction by using a single "smart debris" [23] shaped as a 1:40 geometrically scaled 20 ft standard container to analyse both the trajectories and the impact forces on a structure with the aim of improving the reliability of design guidelines for structures that may be exposed to such hazards and to serve as benchmark tests for future numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modelling of Flow-Debris Interaction during Extreme Hydrodynamic Events with DualSPHysics-CHRONO

et al. 2021

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Floods can transport debris of a very wide range of dimensions, from cohesive sediments to large floating debris, such as trees and cars. The latter increases the risk associated with floods by, for example, obstructing the flow or damaging structures due to impact. The transport of this type of debris and their interaction with structures are often studied experimentally in the context of tsunamis and flash floods. Numerical studies on this problem are rare, therefore the present study focuses on the numerical modelling of the flow-debris interaction. This is achieved by simulating multiple laboratory experiments, available in the literature, of a single buoyant container transported by a dam-break flow in order to validate the chosen numerical approach. The numerical simulations are carried using the open source DualSPHysics model based on the smoothed particle hydrodynamics method coupled with the multi-physics engine CHRONO, which handles the container–bottom interactions. The trajectory, as well as the velocity of the centroid of the container, were tracked throughout the simulation and compared with the same quantities measured in the laboratory. The agreement between the model and the experiment results is quantitatively assessed using the normalised root mean squared error and it is shown that the model is accurate in reproducing the floating container trajectory and velocity.

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Debris impact under extreme hydrodynamic conditions part 1: Hydrodynamics and impact geometry

Cited by 36 publications

References 17 publications

Full-scale CFD simulation of tsunamis. Part 1: Model validation and run-up

Full-scale CFD simulation of tsunamis. Part 1: Model validation and run-up

Development of a Probabilistic Framework for Debris Transport and Hazard Assessment in Tsunami-Like Flow Conditions

Numerical Modelling of Flow-Debris Interaction during Extreme Hydrodynamic Events with DualSPHysics-CHRONO

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