Modelling large floating bodies in urban area flash-floods via a Smoothed Particle Hydrodynamics model

Albano, Raffaele; Sole, Aurelia; Mirauda, Domenica; Adamowski, Jan

doi:10.1016/j.jhydrol.2016.02.009

Cited by 58 publications

(35 citation statements)

References 63 publications

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“…Along with significant changes in global climate and the considerably increasing disturbance caused by human activities, flood disasters in urban areas have become more serious, substantially restricting social and economic development and posing a threat to the safety of human lives and properties [1,2]. In recent years, urban flooding has caused many casualties and property losses in Japan, Singapore, The Netherlands, Britain and other countries [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Effects of Low Impact Development Practices on Urban Flooding under Different Rainfall Intensities

Zhu

Chen

2017

Water

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Low impact development (LID) is an important control measure against extreme rainfall events and is widely applied to relieve urban flood disasters. To investigate the effects of LID practices on flooding control under different rainfall scenarios, this paper constructs a rainfall-runoff model based on the storm water management model (SWMM) for a typical residential area in Guangzhou, China. The model is calibrated by using observed rainfall and runoff data. A total of 27 rainfall scenarios are constructed to simulate the change characteristics before and after the LID practices. Also, the projection pursuit method based on a particle swarm optimization (PSO) algorithm is used to assess the flooding characteristics. The results show that the constructed rainfall-runoff model can closely reflect the relationship between rainfall and runoff, with all Nash-Sutcliffe coefficients of efficiency (NSE) exceeding 0.7. It was found from the simulation and assessment of the constructed rainfall scenarios that the changes in rainfall characteristics have a considerable impact on the constructed drainage system and that LID practices can properly control the floods. However, with an increase in rainfall peak coefficient, intensity or duration, the control effects of LID tend to reduce. Particularly in the scenario of relatively high rainfall intensity, the impact of rainfall duration and the rainfall peak coefficient on the LID practices is minor.

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Section: Introductionmentioning

confidence: 99%

Evaluating the Effects of Low Impact Development Practices on Urban Flooding under Different Rainfall Intensities

Zhu

Chen

2017

Water

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“…Moreover, they developed a wall boundary condition based on the one-sided Riemann solver to handle violent breaking-wave impacts. In another study, Albano et al [35] applied an SPH model, implementing an advanced boundary treatment [15], to handle complex 3D configurations, which considered the transport of different rigid bodies in free surface flows arising from a small dam failure. The model accurately reproduced trends in the water depth and the timeline of the bodies' movements.…”

Section: Introductionmentioning

confidence: 99%

Smoothed Particle Hydrodynamics Modeling with Advanced Boundary Conditions for Two-Dimensional Dam-Break Floods

Mirauda

Albano

Sole

et al. 2020

Water

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To simulate the dynamics of two-dimensional dam-break flow on a dry horizontal bed, we use a smoothed particle hydrodynamics model implementing two advanced boundary treatment techniques: (i) a semi-analytical approach, based on the computation of volume integrals within the truncated portions of the kernel supports at boundaries and (ii) an extension of the ghost-particle boundary method for mobile boundaries, adapted to free-slip conditions. The trends of the free surface along the channel, and of the impact wave pressures on the downstream vertical wall, were first validated against an experimental case study and then compared with other numerical solutions. The two boundary treatment schemes accurately predicted the overall shape of the primary wave front advancing along the dry bed until its impact with the downstream vertical wall. Compared to data from numerical models in the literature, the present results showed a closer fit to an experimental secondary wave, reflected by the downstream wall and characterized by complex vortex structures. The results showed the reliability of both the proposed boundary condition schemes in resolving violent wave breaking and impact events of a practical dam-break application, producing smooth pressure fields and accurately predicting pressure and water level peaks. compared to 3D CFD (computational fluid dynamics) equations [1,2]. However, given their meshing features, assumptions regarding hydrostatic pressure, and neglect of vertical velocity and flow velocity uniformity along the vertical axis [3,4], traditional numerical solutions to SWEs cannot effectively reproduce the strong distortion of the free surface that occurs in dam-break flows.Mesh-free models, such as smoothed particle hydrodynamics (SPH), offer an alternative to solving SWEs with grid-based numerical methods and have, accordingly, been applied to several areas of computational fluid dynamics [5,6]. The SPH method presents different advantages: mesh deformation and cracking; calculation of the system's advection and transport (due to its Lagrangian nature); modeling of free surface and phase/fluid interface problems; the ability to manage very large deformations in high-energy phenomena (e.g., explosions, high-velocity impacts, and penetrations); applicability at multiple scales if coupled with molecular dynamics and dissipative particle dynamics; and greater suitability to 3D-modeling than mesh-based methods [7,8]. In addition, should a "weakly compressible" approach be adopted, the non-iterative SPH algorithms are simplified [8].The limits of SPH models are linked to slightly higher computational costs, complex procedures for the local refining of spatial resolution, and a relatively low accuracy for classical CFD applications where mesh-based models are well-validated (e.g., confined mono-phase flows [8]). However, they are effectively employed in several fields [9][10][11][12][13][14][15][16][17][18].Various flood propagation studies have focused on the use of the SPH method to investigate dam-break ...

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“…SPH algorithm solves problem domain based on arbitrarily distributed particle frameworks and has unique advantages in dealing with problems such as large deformation, kinematic interface, and free surface. It has been widely used in the hydrodynamic studies on dam break [16] landslide surge [17] multiphase flow [18] and spillway [19] and significant research results have been achieved.…”

Section: Introductionmentioning

confidence: 99%

SPH Simulation of Hydraulic Jump on Corrugated Riverbeds

Luo

et al. 2019

Applied Sciences

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This paper presents a numerical study of the hydraulic jump on corrugated riverbed using the Smoothed Particle Hydrodynamics (SPH) method. By simulating an experimental benchmark example, the SPH model is demonstrated to predict the wave profile, velocity field, and energy dissipation rate of hydraulic jump with good accuracy. Using the validated SPH model, the dynamic evolvement of the hydraulic jump on corrugated riverbed is studied focusing on the vortex pattern, jump length, water depth after hydraulic jump, and energy dissipation rate. In addition, the influences of corrugation height and length on the characteristics of hydraulic jump are parametrically investigated.

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Modelling large floating bodies in urban area flash-floods via a Smoothed Particle Hydrodynamics model

Cited by 58 publications

References 63 publications

Evaluating the Effects of Low Impact Development Practices on Urban Flooding under Different Rainfall Intensities

Evaluating the Effects of Low Impact Development Practices on Urban Flooding under Different Rainfall Intensities

Smoothed Particle Hydrodynamics Modeling with Advanced Boundary Conditions for Two-Dimensional Dam-Break Floods

SPH Simulation of Hydraulic Jump on Corrugated Riverbeds

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