Article
Engineering, Marine
Anis Hasanpour, Denis Istrati, Ian Buckle
Summary: Field surveys have shown the catastrophic effects of large waterborne debris on coastal infrastructure during recent tsunami events. This study introduces a coupled SPH-FEM modeling approach to simulate these effects, validated through large-scale experiments. The study also suggests the potential for non-linear force-velocity trends due to debris pitching, highlighting the need for further investigation with three-dimensional models.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Ocean
Aditya Gupta, Amin Heidarpour, Manasa R. Behera
Summary: This study investigates the impact of debris during extreme events on coastal structures, and shows that the orientation angle of the structure plays a major role in determining the peak debris impact load. The experimental and numerical results provide valuable insights for the critical design of coastal structures.
APPLIED OCEAN RESEARCH
(2022)
Article
Engineering, Civil
Jun Mitsui, Corrado Altomare, Alejandro J. C. Crespo, Jose M. Dominguez, Ivan Martinez-Estevez, Tomohiro Suzuki, Shin-ichi Kubota, Moncho Gomez-Gesteira
Summary: This study analyzes the stability of Tetrapod armor units against solitary waves using the Smoothed Particle Hydrodynamics (SPH) method. The SPH-based DualSPHysics code is combined with the multiphysics library Project Chrono for this purpose. Tetrapod units are placed on top of a submerged mound, and the fluid-solid interaction is solved by DualSPHysics while the Tetrapod-mound interaction is solved by Project Chrono based on contact and material properties. The numerical results, including Tetrapod displacements and damage ratio under different solitary waves, are in reasonable agreement with physical model experiments, demonstrating the capability of DualSPHysics code to simulate challenging environments. The validated tool is then used to study the stability for different coefficients of friction between the mound and Tetrapods to simulate the effects of different materials and surface roughness.
COASTAL ENGINEERING
(2023)
Article
Engineering, Civil
Claudia Reis, Andre R. Barbosa, Jorge Figueiredo, Stephane Clain, Mario Lopes, Maria Ana Baptista
Summary: Accurate characterization of coastal structures' response to tsunami-like waves is crucial for structural engineering assessment and design. This study investigates the numerical convergence of free-surface elevation solutions using SPH models and examines the trade-off between solution accuracy and computational costs. Results show that two-dimensional models and a specific particle ratio can reasonably predict non-turbulent unbroken waves, while three-dimensional models and a higher particle ratio are needed for broken waves. The study also compares experimental and numerical results, demonstrating the adequacy of the SPH models and highlighting the symbiotic relationship between experimental data and numerical insights.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Geological
Yiding Bao, Lijun Su, Jianping Chen, Chonglei Zhang, Bo Zhao, Weifeng Zhang, Jianqiang Zhang, Bingli Hu, Xudong Zhang
Summary: This paper proposes an integrated three-dimensional numerical approach to quantitatively assess the dynamic process of a debris flow and its interaction with a check dam considering check dam damage. The approach combines the SPH-FDEM method to simulate debris flows and structural check dams. The simulation results show the scale and characteristics of the debris flow and the damage to the check dam, greatly expanding the applicability of debris flow numerical models.
Article
Engineering, Geological
Yiding Bao, Lijun Su, Jianping Chen, Chonglei Zhang, Bo Zhao, Weifeng Zhang, Jianqiang Zhang, Bingli Hu, Xudong Zhang
Summary: This study proposes a novel three-dimensional numerical approach to quantitatively assess the dynamic process of a debris flow and its interaction with a check dam considering check dam damage. The numerical simulation results show that the approach can accurately predict the scale of the debris flow and clearly observe the process of check dam damage.
Article
Engineering, Civil
Bao-Loi Dang, H. Nguyen-Xuan, Magd Abdel Wahab
Summary: This study numerically investigated various shapes of seawalls in terms of wave force exerted on structures and overtopping water, finding the most optimal shape for reducing overtopping water under the same wave conditions. The simulations showed good agreement with reference results and the differences in calculated forces were insignificant.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Marine
Joe El Rahi, Ivan Martinez-Estevez, Bonaventura Tagliafierro, Jose M. Dominguez, Alejandro J. C. Crespo, Vasiliki Stratigaki, Tomohiro Suzuki, Peter Troch
Summary: This paper presents a novel numerical coupling method to solve fluid-elastic structure interaction problems involving ultra-thin elements in a 3-D environment. The numerical model, which combines the SPH method in DualSPHysics code and the FEA structural solver in Project Chrono, is able to accurately describe the vegetation dynamics under wave action. The findings provide insights into the swaying dynamics of the vegetation and indicate the importance of considering energy dissipation in systems with substantial swaying motion.
Article
Engineering, Civil
Shenglong Gu, Wengang Zheng, Haitao Wu, Chen Chen, Songdong Shao
Summary: This technical note introduces the application of DualSPHysics in spillway hydraulics and compares the single-water and two-phase water-air modelling approaches. It is found that the DualSPHysics code can be a promising design tool for spillway flows, and the two-phase model improves simulation accuracy.
JOURNAL OF HYDRAULIC RESEARCH
(2022)
Article
Water Resources
Muhammad Hafiz Aslami, Benedict D. Rogers, Peter K. Stansby, Andrea Bottacin-Busolin
Summary: This paper introduces a fully coupled model of three-dimensional debris motion in shallow-water flow. The model uses Smoothed Particle Hydrodynamics (SPH) to solve the shallow-water equations and represents debris motion using the modified Morison equation. The model is implemented in an open-source software DualSPHysics.
ADVANCES IN WATER RESOURCES
(2023)
Article
Environmental Sciences
Feng Zhang, Li Zhang, Yanshuang Xie, Zhiyuan Wang, Shaoping Shang
Summary: This study investigates the dynamic behaviors of floating structures with moorings using smoothed particle hydrodynamics, successfully validating the numerical model developed. The simulated results show good consistency with experimental data, and the motion response of the simulated mariculture platform varies under different wave conditions.
Article
Environmental Sciences
Salvatore Capasso, Bonaventura Tagliafierro, Hasan Guzel, Ada Yilmaz, Kaan Dal, Selahattin Kocaman, Giacomo Viccione, Stefania Evangelista
Summary: The presence of obstacles downstream of a dam can significantly impact flood wave propagation and result in dramatic consequences on people and structures. Using a Lagrangian-based solver, a three-dimensional dam-break event was simulated to study the complexity of fluid dynamics, demonstrating the effectiveness of the model through sensitivity analysis.
Article
Engineering, Geological
Zhitian Qiao, Wei Shen, Matteo Berti, Tonglu Li
Summary: In this paper, a novel SPH model is proposed for analyzing the interaction between debris flow and prevention structures. The model is validated and applied to analyze a real debris flow and its interaction with prevention structures in the Cancia catchment. The results show that check dams can significantly reduce the discharge and frontal flow velocity of the debris flow, and different prevention structures have different interaction mechanisms with debris flows.
Article
Engineering, Marine
JiaZhao Sun, Li Zou, Nicolin Govender, Ivan Martinez-Estevez, Alejandro J. C. Crespo, Zhe Sun, Jose M. Dominguez
Summary: This study proposes a three-dimensional resolved numerical framework for analyzing complex shape polyhedron-fluid interaction. It accurately simulates the dynamic behavior of hybrid fluid-particle systems using the weakly compressible smoothed particle hydrodynamics (SPH) and discrete element method (DEM). The high-fidelity modeling and efficient coupling scheme demonstrate the reliability and applicability of the SPH-DEM solver in various engineering problems.
Article
Engineering, Aerospace
K. Kotsarinis, M. D. Green, A. Simonini, O. Debarre, T. Magin, A. Tafuni
Summary: Characterizing the movement of space propellant in the tank and predicting its damping is crucial for space missions. This study evaluates the capabilities of the SPH method in simulating liquid sloshing motion using the DualSPHysics code. The SPH scheme is validated using analytical solutions and experimental data on sloshing in cylindrical tanks. The simulations accurately capture the flow physics and reproduce the free surface elevation, damping rates, and dominant frequencies.
AEROSPACE SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Civil
Fangfang Zhu, Nicholas Dodd, Riccardo Briganti, Magnus Larson, Jie Zhang
Summary: This paper introduces a bottom boundary layer model for unsteady and non-uniform flow in the swash zone, incorporating spatial gradients into the momentum integral method. Results show significant effects of spatial gradients on the lower swash and seaward region, enhancing onshore bed shear stress under non-breaking waves. The model also accurately reproduces swash dynamics in different case studies, favoring onshore sediment transport and showing more comprehensive capture of the swash boundary layer.
COASTAL ENGINEERING
(2022)
Article
Engineering, Marine
Riccardo Briganti, Rosaria Ester Musumeci, Jentsje van der Meer, Alessandro Romano, Laura Maria Stancanelli, Matthias Kudella, Rizki Akbar, Ryard Mukhdiar, Corrado Altomare, Tomohiro Suzuki, Paolo De Girolamo, Giovanni Besio, Nicholas Dodd, Fangfang Zhu, Stefan Schimmels
Summary: This study investigates how wave overtopping at a near-vertical seawall on a sandy foreshore is affected by sequences of erosive storms. Experiments were conducted in a wave flume, and measurements included waves, beach profile, and wave overtopping volumes. The study finds that bed changes significantly influence wave overtopping, and the position of a sea state in the storm sequence plays a crucial role in determining the wave overtopping volume.
Article
Construction & Building Technology
Ali Dalalbashi, Bahman Ghiassi, Daniel Oliveira
Summary: This article presents a study on the effect of freeze-thaw conditions on the behavior of masonry components strengthened with textile-reinforced mortars (TRMs). The results show that the freeze-thaw cycles do not affect the in-plane and out-of-plane performance of the strengthened panels.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
R. Ramirez, B. Ghiassi, P. Pineda, P. B. Lourenco
Summary: This paper presents a numerical study on moisture transport in brick masonry walls, focusing on the simulation of their hygric performance and hydraulic phenomena at the brick-mortar interface. A diffusivity model is used to describe the moisture transport, which is validated through water absorption and drying tests. The study shows that adjusting the liquid water diffusivity expression and considering the interface impact are important for accurately representing water absorption in multi-layered structures.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Jia-Qi Wu, Bo Li, Yung-Tsang Chen, Bahman Ghiassi
Summary: This paper suggests using glass sand instead of fine silica sand to produce sustainable Engineered Geopolymer Composites (EGCs), and evaluates the effects of glass sand content and size on the properties and microstructure of the EGCs. The results show that incorporating glass sand improves the flowability of EGCs, but decreases their compressive and tensile strengths. However, increasing the fineness of glass sand can enhance the geopolymerisation and strengthen the glass-geopolymer interfaces, thereby increasing the strengths of EGCs.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Civil
Hao Wang, Licheng Wang, Bahman Ghiassi, Yupu Song, Le Zhou, Dongxu Hou
Summary: The dynamic properties of saturated and dry concrete were compared and analyzed through dynamic biaxial tensile-compressive experiments. The ultimate strengths of both types of concrete were found to be closely related to the lateral pressure of the specimen, while the independent tensile and compressive strength increased with the increase in strain rate. In the case of exerting lateral pressure, the failure states of the specimens were the same as those of uniaxial tensile specimens, indicating complete fracture under tensile loading. The biaxial T-C strength of saturated concrete was lower at a strain rate of 10(-5)s(-1), but higher at other strain rates, indicating greater rate sensitivity under lateral pressure. The article explains this phenomenon is mainly due to the beneficial tensile stress of the pore water surface and the Stefan effect, and establishes a strength prediction expression for saturated concrete considering stress ratio and strain rate simultaneously.
KSCE JOURNAL OF CIVIL ENGINEERING
(2023)
Article
Engineering, Marine
Gioele Ruffini, Jose M. Dominguez, Riccardo Briganti, Corrado Altomare, Jacob Stolle, Alejandro J. C. Crespo, Bahman Ghiassi, Salvatore Capasso, Paolo De Girolamo
Summary: A new two-step offline coupling method was developed and validated in DualSPHysics to model extreme hydrodynamic events. The method significantly reduces computational time while maintaining accuracy in simulating flow variables in the receiving domain.
Article
Chemistry, Multidisciplinary
Rafael Ramirez, Bahman Ghiassi, Paloma Pineda, Paulo B. Lourenco
Summary: This paper presents a numerical methodology for analyzing the hygro-thermo-mechanical behavior of masonry structures. The methodology can assess the performance of masonry walls under various environmental loads and can also study the compatibility between masonry units and mortars.
APPLIED SCIENCES-BASEL
(2023)
Article
Meteorology & Atmospheric Sciences
Francesco De Leo, Riccardo Briganti, Giovanni Besio
Summary: This review analyzes the consensus among previous studies on the impact of climate change on ocean waves in the Mediterranean Sea. It finds that significant wave height trends have received more attention, while direction and wave period have been under-studied. The analysis also reveals complex spatial distributions of extreme sea state trends in different sub-basins of the Mediterranean. The review highlights the sources of uncertainty in the results and identifies the reduction of uncertainties and the relationship between sea state trends and weather processes as priority areas for future research.
Article
Construction & Building Technology
Mohammed Hutaibat, Bahman Ghiassi, Walid Tizani
Summary: This paper experimentally investigates the flexural response of both non-prestressed and prestressed basalt-based textile-reinforced concrete plates. The study focuses on the reinforcement ratio, position, coating, as well as prestressing level, releasing time, testing age, and coating type to determine their effects on the flexural behavior of TRCs.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Civil
Daniele Catucci, Riccardo Briganti, Valentin Heller
Summary: This study introduces novel scaling laws for compressible air-water flows, which are validated through computational fluid dynamics modelling. The self-similar conditions of these scaling laws have the potential to improve laboratory modelling.
JOURNAL OF HYDRAULIC RESEARCH
(2023)
Article
Engineering, Civil
Alessandro De Iasio, Bahman Ghiassi, Riccardo Briganti, Gabriele Milani
Summary: Masonry buildings are susceptible to hydrodynamic events, with waterborne debris impacts causing significant damage to masonry walls. This study investigates the strain rate effects of masonry under waterborne debris impact using nonlinear Finite Element simulations. The results show that strain rates exceed the critical threshold for strain rate effects to be significant, and the impact location and debris properties affect the magnitude of strain rate. The dynamic tensile postelastic behavior of materials is identified as the most influential parameter in the structural response. These findings open up new possibilities for assessing and designing masonry structures against waterborne debris.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Ahmad Adaileh, Bahman Ghiassi, Riccardo Briganti
Summary: This article introduces a fast prediction/assessment model using a conditional generative adversarial neural network to predict the mechanical response and material properties of masonry structures. Strain maps and reaction forces of masonry panels can be obtained from images without prior knowledge of material properties and constitutive laws.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Proceedings Paper
Engineering, Civil
Theodoros Rousakis, Arkadiusz Kwiecien, Alberto Viskovic, Alper Ilki, Petra Tiller, Bahman Ghiassi, Andrea Benedetti, Matija Gams, Zoran Rakicevic, Omer Faruk Halici, Boguslaw Zajac, Lukasz Hojdys, Piotr Krajewski, Fabio Rizzo, Camilla Colla, Elena Gabrielli, Anastasios Sapalidis, Efthimia Papadouli, Vachan Vanian, Aleksandra Bogdanovic
Summary: This paper presents the initial results of seismic tests on a real scale reinforced concrete building within the SERA Horizon 2020 INMASPOL project. The use of polyurethane resin flexible joints and fiber reinforced PU repair system achieved satisfactory performance in repairing and protecting the infills under suitably designed seismic excitations.
10TH INTERNATIONAL CONFERENCE ON FRP COMPOSITES IN CIVIL ENGINEERING (CICE 2020/2021)
(2022)