Stéphan T. Grilli
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View article: Investigating lab-scaled offshore wind aerodynamic testing failure and developing solutions for early anomaly detections
Investigating lab-scaled offshore wind aerodynamic testing failure and developing solutions for early anomaly detections Open
As offshore wind systems become more complex, the risk of human error or equipment malfunction increases during experimental testing. This study investigates a lab-scale incident involving a 1 : 50 scale 5 MW wind turbine, where a generato…
View article: Uncertainty-Guided Prediction Horizon of Phase-Resolved Ocean Wave Forecasting Under Data Sparsity: Experimental and Numerical Evaluation
Uncertainty-Guided Prediction Horizon of Phase-Resolved Ocean Wave Forecasting Under Data Sparsity: Experimental and Numerical Evaluation Open
Accurate short-term wave forecasting is critical for the safe and efficient operation of marine structures that rely on real-time, phase-resolved ocean wave information for control and monitoring purposes (e.g., digital twins). These syste…
View article: Uncertainty-Guided Prediction Limits of Phase-Resolved OceanWave Forecasting under Data Sparsity: Experimental andNumerical Evaluation
Uncertainty-Guided Prediction Limits of Phase-Resolved OceanWave Forecasting under Data Sparsity: Experimental andNumerical Evaluation Open
Accurate short-term wave forecasting is critical to floating marine structures' efficient and safe operations as well as their active control using models (e.g., digital twins) that rely on real-time, phase-resolved ocean wave loading. For…
View article: Tsunami hazard assessment along the US East Coast from extreme sources in the North Atlantic Ocean: a limited probabilistic analysis
Tsunami hazard assessment along the US East Coast from extreme sources in the North Atlantic Ocean: a limited probabilistic analysis Open
Coastal hazard is assessed along the US East Coast (USEC) through model simulation of 14 probable maximum tsunamis (PMTs) from sources located in the North Atlantic Ocean basin, in terms of: (i) standard inundation maps and other hazard pr…
View article: POWER AND LIMITATIONS OF NATURE-BASED SOLUTIONS TO ENHANCE COASTAL RESILIENCE
POWER AND LIMITATIONS OF NATURE-BASED SOLUTIONS TO ENHANCE COASTAL RESILIENCE Open
Coastal communities are unquestionably threatened by sea level rise and storm intensification. Their vulnerability is primarily function of their exposure, increasing in time, resulting into cascading effects affecting the spatial and temp…
View article: PROBABILISTIC TSUNAMI HAZARD ANALYSIS FROM SUBMARINE MASS FAILURE: A MONTE CARLO APPROACH TO A CASE STUDY IN ITALY
PROBABILISTIC TSUNAMI HAZARD ANALYSIS FROM SUBMARINE MASS FAILURE: A MONTE CARLO APPROACH TO A CASE STUDY IN ITALY Open
Tsunamis, although of rare occurrence compared to other natural disasters, can have devastating consequences for society’s increasingly populated coastal areas. In order to manage the associated risk, coastal tsunami hazard can be assessed…
View article: A NEW MODELING FRAMEWORK FOR PROBABILISTIC LANDSLIDE TSUNAMI HAZARD ANALYSES
A NEW MODELING FRAMEWORK FOR PROBABILISTIC LANDSLIDE TSUNAMI HAZARD ANALYSES Open
Landslide tsunamis, although even less frequent than coseismic tsunamis, can be particularly damaging for the nearest coast and coastal communities, because: (i) for large slide volumes, shallow submergence, and large vertical displacement…
View article: WAVE BREAKING ONSET AND DISSIPATION IN A FULLY NON-LINEAR, STAGGERED GRID BOUSSINESQ MODEL
WAVE BREAKING ONSET AND DISSIPATION IN A FULLY NON-LINEAR, STAGGERED GRID BOUSSINESQ MODEL Open
This study considers the pre- and post-breaking behavior of Weakly-nonlinear (WNL) and Fully-nonlinear (FNL) Boussinesq-type (BTE) models. The main inquiries are: 1. Can the FNL model accurately reproduce shoaling behavior and the estimati…
View article: 3D DEPTH-LIMITED BREAKING WAVES OVER VARIABLE BATHYMETRY IN FULLY NON-LINEAR POTENTIAL FLOW
3D DEPTH-LIMITED BREAKING WAVES OVER VARIABLE BATHYMETRY IN FULLY NON-LINEAR POTENTIAL FLOW Open
A new method of modeling 3D depth-limited breaking waves is proposed and implemented in a fully non-linear potential flow model based on the boundary element method. The method is implemented in three steps: (1) identification of breaking …
View article: Investigating Lab-scaled Offshore Wind Aerodynamic Testing Failure and Developing Solutions for Early Anomaly Detections
Investigating Lab-scaled Offshore Wind Aerodynamic Testing Failure and Developing Solutions for Early Anomaly Detections Open
Experimental demonstration of offshore wind components and systems plays an increasingly critical role in advancing the industry. As these systems increase in complexity, the likelihood of human error or software malfunction increases, lea…
View article: Past and Future Storm-Driven Changes to a Dynamic Sandy Barrier System: Outer Cape Cod, Massachusetts
Past and Future Storm-Driven Changes to a Dynamic Sandy Barrier System: Outer Cape Cod, Massachusetts Open
Sandy barrier systems are highly dynamic, with the most significant natural morphological changes to these systems occurring during high-energy storm conditions. These systems provide a range of economic and ecosystem benefits and protect …
View article: On Building Predictive Digital Twin Incorporating Wave Predicting Capabilities: Case Study on UMaine Experimental Campaign - FOCAL
On Building Predictive Digital Twin Incorporating Wave Predicting Capabilities: Case Study on UMaine Experimental Campaign - FOCAL Open
The response of floating wind turbines (FWT) are susceptible to stochastic wave variations. For the optimal operation of FWT, a comprehensive understanding of the phaseresolved wave dynamics and the consequential system response is crucial…
View article: SIMULATION OF STEEPNESS-LIMITED BREAKING WAVES IN A FULLY NONLINEAR POTENTIAL FLOW MODEL
SIMULATION OF STEEPNESS-LIMITED BREAKING WAVES IN A FULLY NONLINEAR POTENTIAL FLOW MODEL Open
Steepness-limited wave breaking is simulated in a fully nonlinear potential flow model and validated with laboratory data. Breaking onset is based on the ratio of horizontal particle velocity at the crest, relative to the crest velocity re…
View article: LANDSLIDE TSUNAMI HAZARD ASSESSMENT: A NUMERICAL MODEL FOR THE SIMULATION OF MULTIPLE LANDSLIDE-INDUCED TSUNAMIS SCENARIOS IN A MONTE CARLO FRAMEWORK
LANDSLIDE TSUNAMI HAZARD ASSESSMENT: A NUMERICAL MODEL FOR THE SIMULATION OF MULTIPLE LANDSLIDE-INDUCED TSUNAMIS SCENARIOS IN A MONTE CARLO FRAMEWORK Open
Submarine landslides can pose serious tsunami hazard to coastal communities. However, performing a comprehensive landslide tsunami hazard assessment for a given area is in general difficult in view of the large uncertainties associated wit…
View article: NUMERICAL SIMULATION OF TSUNAMI IMPACT FROM THE 1/15/22 ERUPTION OF THE HUNGA TONGA - HUNGA HA’APAI VOLCANO
NUMERICAL SIMULATION OF TSUNAMI IMPACT FROM THE 1/15/22 ERUPTION OF THE HUNGA TONGA - HUNGA HA’APAI VOLCANO Open
Tsunamis from volcanic ‘explosive’ eruptions are rare, with the last catastrophic event being Krakatau in 1883 (Verbeek, 1885), during which, tsunamis were generated in the far-field by pressure shock-waves and in the nearfield of the volc…
View article: REINFORCING ECOSYSTEM ENGINEERS WITH ENHANCED VEGETATION AND AN ARTIFICIAL REEF ALONG THE US RHODE ISLAND COASTAL BARRIER SYSTEMS
REINFORCING ECOSYSTEM ENGINEERS WITH ENHANCED VEGETATION AND AN ARTIFICIAL REEF ALONG THE US RHODE ISLAND COASTAL BARRIER SYSTEMS Open
Beach barrier systems (BBS) act as “ecosystem engi-neers” (EE), protecting the mainland and back bays from direct wave impact and reducing storm surge and flow passing through their inlets. BBS naturally adapt to slowly evolving wave clima…
View article: 3D Morphodynamic Visualizations of Storm Impacts for Decision Support.
3D Morphodynamic Visualizations of Storm Impacts for Decision Support. Open
3D flood visualizations are commonly used by coastal managers and other experts to engage the public regarding storm impacts, and to support management decisions. 3D flood visualizations do not, however, capture physical changes to the lan…
View article: Understanding and Reducing the Disaster Risk of Landslide-Induced Tsunamis: Outcome of the Panel Discussion and the World Tsunami Awareness Day Special Event of the Fifth World Landslide Forum
Understanding and Reducing the Disaster Risk of Landslide-Induced Tsunamis: Outcome of the Panel Discussion and the World Tsunami Awareness Day Special Event of the Fifth World Landslide Forum Open
Landslide-induced tsunamis are one of the most important cascading multi-hazard risks in light of landslide disasters. During the Fifth World Landslide Forum, a World Tsunami Awareness Day Special Event was held in hybrid mode on 5 Novembe…
View article: Hybrid Lattice-Boltzmann-Potential Flow Simulations of Turbulent Flow around Submerged Structures
Hybrid Lattice-Boltzmann-Potential Flow Simulations of Turbulent Flow around Submerged Structures Open
We report on the development and validation of a 3D hybrid Lattice Boltzmann Model (LBM), with Large Eddy Simulation (LES), to simulate the interactions of incompressible turbulent flows with ocean structures. The LBM is based on a perturb…
View article: Block-structured, equal-workload, multi-grid-nesting interface for the Boussinesq wave model FUNWAVE-TVD (Total Variation Diminishing)
Block-structured, equal-workload, multi-grid-nesting interface for the Boussinesq wave model FUNWAVE-TVD (Total Variation Diminishing) Open
We describe the development of a block-structured, equal-CPU-load (central processing unit), multi-grid-nesting interface for the Boussinesq wave model FUNWAVE-TVD (Fully Nonlinear Boussinesq Wave Model with Total Variation Diminishing Sol…
View article: Comment on egusphere-2022-35
Comment on egusphere-2022-35 Open
Abstract. We describe the development of a block-structured, equal CPU-load, multigrid nesting interface for the Boussinesq wave model FUNWAVE-TVD. The new model framework does not interfere with the core solver, and thus the core program,…
View article: Block-structured, equal workload, multigrid nesting interface for Boussinesq wave model FUNWAVE-TVD
Block-structured, equal workload, multigrid nesting interface for Boussinesq wave model FUNWAVE-TVD Open
We describe the development of a block-structured, equal CPU-load, multigrid nesting interface for the Boussinesq wave model FUNWAVE-TVD. The new model framework does not interfere with the core solver, and thus the core program, FUNWAVE-T…
View article: Hybrid simulation of turbulent flow interactions with submerged structures by combining a potential flow solver and a Lattice-Boltzmann LES model
Hybrid simulation of turbulent flow interactions with submerged structures by combining a potential flow solver and a Lattice-Boltzmann LES model Open
We develop a 3D Lattice Boltzmann Method (LBM) with Large Eddy Simulation(LES), and a wall model, to simulate interactions of fully turbulent flows with oceanstructures. The LBM is based on a hybrid method, combining inviscid (far-field) a…
View article: Understanding and reducing the disaster risk of landslide-induced tsunamis: a short summary of the panel discussion in the World Tsunami Awareness Day Special Event of the Fifth World Landslide Forum
Understanding and reducing the disaster risk of landslide-induced tsunamis: a short summary of the panel discussion in the World Tsunami Awareness Day Special Event of the Fifth World Landslide Forum Open
A World Tsunami Awareness Day Special Event was held in hybrid mode on 5 November 2021, during the Fifth World Landslide Forum, in Kyoto, Japan. In this context, a panel discussion was organized across America, Europe, and Asia, with the g…