Article
Environmental Sciences
Bin Deng, Wen Zhang, Yu Yao, Changbo Jiang
Summary: This study investigates the hydrodynamics of bore-driven swash flows over beaches with varying slopes through laboratory experiments. The impacts of beach slope on swash hydrodynamics and the formation and evolution of vortex structures are analyzed.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Computer Science, Interdisciplinary Applications
Xiangang Jiang, Pengshuai Chen, Haiguang Cheng, Xiaoqing Chen, Huayong Chen, Zhanyuan Zhu, Zuyin Zou
Summary: This paper proposes a simple and easy-to-operate dry-wet boundary treatment method based on the total variation diminishing (TVD)- MacCormack scheme to solve the shallow water equation. The method requires judging dry and wet nodes before the calculation of the prediction step and correction step. The difference scheme for the prediction step and correction step is modified, and a new finite difference scheme improvement method is proposed to address the issue of over predicted computational fluxes.
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
(2023)
Article
Engineering, Ocean
B. Deng, W. Zhang, H. S. Tang, C. B. Jiang, X. J. Liu
Summary: This study experimentally investigates the hydrodynamics and sediment transport caused by dam-break waves in the swash zones of three sandy beaches. The results show that the uniformity of sand particle sizes plays a crucial role in the hydraulic behavior, bedform evolution, bedload transport, and sand particle migration.
APPLIED OCEAN RESEARCH
(2022)
Article
Geochemistry & Geophysics
E. H. Madden, M. Bader, J. Behrens, Y. van Dinther, A-A Gabriel, L. Rannabauer, T. Ulrich, C. Uphoff, S. Vater, I van Zelst
Summary: Researchers have used linked dynamic earthquake and tsunami computational models to simulate tsunami genesis, propagation, and coastal inundation, finding that the higher tsunami-generating efficiency of blind zone earthquakes can lead to smaller but more efficient tsunamis. They have also demonstrated the application of complex earthquake models in tsunami studies.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Geosciences, Multidisciplinary
M. Pontiki, J. A. Puleo, H. Bond, M. Wengrove, R. A. Feagin, T. -j. Hsu, T. Huff
Summary: This study investigates the response of sand berms to storm conditions. Results indicate that overtopping and offshore sediment transport are key processes causing berm erosion. The formation of offshore sand bars attenuates subsequent wave energy and inhibits inundation of the backshore.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2023)
Article
Geosciences, Multidisciplinary
M. Pontiki, J. A. Puleo, H. Bond, M. Wengrove, R. A. Feagin, T. J. Hsu, T. Huff
Summary: This study explores the response of a near-prototype berm to scaled storm conditions and finds that berm overtopping and offshore sediment transport are key processes causing berm erosion. Additionally, the formation of offshore sand bars attenuates subsequent wave energy and inhibits inundation of the backshore. Sediment transport in the swash zone is predominantly influenced by infragravity motions, while sediment transport in the inner-sur zone is relatively more influenced by incident-band motions.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2023)
Article
Oceanography
Giulia Mancini, Riccardo Briganti, Robert McCall, Nicholas Dodd, Fangfang Zhu
Summary: This study aims to improve the numerical modeling of intra-wave sediment transport on sandy beaches by implementing a new transport equation in a wave-resolving hydro-morphodynamic framework. Experimental results show better performance in simulating single waves compared to wave trains, indicating the need for further research in capturing sediment transport and bed evolution in the surf zone.
Article
Geosciences, Multidisciplinary
Kirti Srivastava, Farveen Begum, Mounica Jakkula
Summary: The research discussed in the paper focuses on the tsunami propagation and inundation following the 2004 Indian Ocean tsunami, covering various aspects such as the effects of tsunamis over different terrains, islands, east and west coasts, tsunami forces on different beaches, and the impact of changing bathymetry in the Indian Ocean.
JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA
(2021)
Article
Oceanography
V. V. Fomin, Yu. N. Goryachkin
Summary: In this study, wave parameters and morphodynamic processes in the coastal area of Western Crimea were investigated through mathematical modeling and data analysis. The study found that neglecting scientific recommendations can lead to damage to coastal infrastructure and have significant negative consequences for the coastline.
PHYSICAL OCEANOGRAPHY
(2022)
Article
Engineering, Civil
Eranda Perera, Fangfang Zhu, Nicholas Dodd, Riccardo Briganti, Chris Blenkinsopp, Ian L. Turner
COASTAL ENGINEERING
(2019)
Article
Oceanography
W. L. Chen, N. Dodd
CONTINENTAL SHELF RESEARCH
(2019)
Article
Engineering, Civil
Gioele Ruffini, Valentin Heller, Riccardo Briganti
COASTAL ENGINEERING
(2019)
Article
Mechanics
Sara Venuleo, Dubravka Pokrajac, Anton J. Schleiss, Mario J. Franca
Article
Oceanography
Giulia Mancini, Riccardo Briganti, Robert McCall, Nicholas Dodd, Fangfang Zhu
Summary: This study aims to improve the numerical modeling of intra-wave sediment transport on sandy beaches by implementing a new transport equation in a wave-resolving hydro-morphodynamic framework. Experimental results show better performance in simulating single waves compared to wave trains, indicating the need for further research in capturing sediment transport and bed evolution in the surf zone.
Article
Engineering, Civil
Sara Venuleo, Dubravka Pokrajac, Talia Tokyay, George Constantinescu, Anton J. Schleiss, Mario J. Franca
Summary: Based on the results of large eddy simulation, this study investigates the sensitivity of gravity current depth results to definition, the impact of density and velocity profile nonuniformity on coefficients in depth-averaged continuity and momentum equations, and the sensitivity of entrainment coefficient to current depth definition. The study shows that different definitions of current depth can lead to significantly different numerical results, and the entrainment coefficient is more sensitive to parameterization than the definition of current depth.
JOURNAL OF HYDRAULIC ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Gioele Ruffini, Riccardo Briganti, Paolo De Girolamo, Jacob Stolle, Bahman Ghiassi, Myrta Castellino
Summary: This study focuses on the numerical modeling of flow-debris interaction, using the DualSPHysics model to simulate and validate laboratory experiments. The model accurately reproduces the trajectory and velocity of the floating container, as confirmed by comparison with experimental measurements.
APPLIED SCIENCES-BASEL
(2021)
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
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
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)
Article
Engineering, Marine
Hannah E. Williams, Riccardo Briganti, Alessandro Romano, Nicholas Dodd
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2019)
Article
Computer Science, Interdisciplinary Applications
Ashish Bhole, Herve Guillard, Boniface Nkonga, Francesca Rapetti
Summary: Finite elements of class C-1 are used for computing magnetohydrodynamics instabilities in tokamak plasmas, and isoparametric approximations are employed to align the mesh with the magnetic field line. This numerical framework helps in understanding the operation of existing devices and predicting optimal strategies for the international ITER tokamak. However, a mesh-aligned isoparametric representation encounters issues near critical points of the magnetic field, which can be addressed by combining aligned and unaligned meshes.
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
(2024)
Article
Computer Science, Interdisciplinary Applications
Federico Vismara, Tommaso Benacchio
Summary: This paper introduces a method for solving hyperbolic-parabolic problems on multidimensional semi-infinite domains. By dividing the computational domain into bounded and unbounded subdomains and coupling them using numerical fluxes at the interface, accurate numerical solutions are obtained. In addition, computational cost can be reduced by tuning the parameters of the basis functions.
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
(2024)
Article
Computer Science, Interdisciplinary Applications
Keigo Enomoto, Takato Ishida, Yuya Doi, Takashi Uneyama, Yuichi Masubuchi
Summary: We have developed a novel Moving Particle Simulation (MPS) method to accurately reproduce the motion of fibers in sheared liquids. By introducing the micropolar fluid model, we address the issue of fibers being aligned with the flow direction in conventional MPS simulations. Our method is capable of accurately reproducing the fiber motion predicted by Jeffery's theory.
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
(2024)
