Author
Dimitris Stagonas
Other affiliations: University of Southampton, University College London, University of Cyprus
Bio: Dimitris Stagonas is an academic researcher from Cranfield University. The author has contributed to research in topics: Breaking wave & Rogue wave. The author has an hindex of 11, co-authored 44 publications receiving 349 citations. Previous affiliations of Dimitris Stagonas include University of Southampton & University College London.
Topics: Breaking wave, Rogue wave, Wave flume, Sea ice, Current (fluid)
Papers
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TL;DR: In this article, a set of numerical methods are combined to simulate the ship-wave-ice interaction in such ice conditions, and then a series of simulations are performed to investigate how the resistance is influenced by ship speed, ice concentration, ice thickness and floe diameter.
54 citations
TL;DR: In this article, the feasibility of a very low-head hydropower plant was analyzed for micro-tidal environments such as the Mediterranean Sea and has the additional advantage of protecting shorelines, seawalls and coastal assets from wave action.
41 citations
University of Plymouth1, University of London2, National University of Civil Engineering3, Technical University of Denmark4, Aalborg University5, Cardiff University6, Indian Institute of Technology Madras7, University College London8, Shanghai Jiao Tong University9, Manchester Metropolitan University10, University of Zagreb11, ARUP Laboratories12, National University of Singapore13, University of Bath14
TL;DR: Results from Blind Test Series 1, part of the Collaborative Computational project in Wave Structure Interaction (CCP-WSI), are presented and there is notable variation in the results, even between similar methods.
Abstract: Results from Blind Test Series 1, part of the Collaborative Computational Project in Wave Structure Interaction (CCP-WSI), are presented. Participants, with a range of numerical methods, simulate blindly the interaction between a fixed structure and focused waves ranging in steepness and direction. Numerical results are compared against corresponding physical data. The predictive capability of each method is assessed based on pressure and runup measurements. In general, all methods perform well in the cases considered; however, there is notable variation in the results (even between similar methods). Recommendations are made for appropriate considerations and analysis in future comparative studies.
39 citations
TL;DR: In this paper, a set of numerical methods are combined to simulate the ship-wave-ice interaction in such ice conditions, and then a series of simulations are performed to investigate how the resistance is influenced by ship speed, ice concentration, ice thickness and floe diameter.
Abstract: Whilst climate change is transforming the Arctic into a navigable ocean where small ice floes are floating on the sea surface, the effect of such ice conditions on ship performance has yet to be understood. The present work combines a set of numerical methods to simulate the ship-wave-ice interaction in such ice conditions. Particularly, Computational Fluid Dynamics is applied to provide fluid solutions for the floes and it is incorporated with the Discrete Element Method to govern ice motions and account for ship-ice/ice-ice collisions, by which, the proposed approach innovatively includes wave effects in the interaction. In addition, this work introduces two algorithms that can implement computational models with natural ice-floe fields, which takes randomness into consideration thus achieving high-fidelity modelling of the problem. Following validation against experiments, the model is shown accurate in predicting the ice-floe resistance of a ship, and then a series of simulations are performed to investigate how the resistance is influenced by ship speed, ice concentration, ice thickness and floe diameter. This paper presents a useful approach that can provide power estimates for Arctic shipping and has the potential to facilitate other polar engineering purposes.
35 citations
TL;DR: In this article, the authors validate a two-phase Reynolds Averaged Navier-Stokes (RANS) solver with experimental results for the propagation of steep focused wave groups, using a newly developed methodology based on the separation of harmonics.
34 citations
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TL;DR: In this paper, the authors provide an up-to-date review on several latest advancements related to particle methods with applications in coastal and ocean engineering and highlight the future perspectives for further enhancement of applicability and reliability of particle methods for coastal/ocean engineering applications.
Abstract: The article aims at providing an up-to-date review on several latest advancements related to particle methods with applications in coastal and ocean engineering. The latest advancements corresponding to accuracy, stability, conservation properties, multiphase multi-physics multi-scale simulations, fluid-structure interactions, exclusive coastal/ocean engineering applications and computational efficiency are reviewed. The future perspectives for further enhancement of applicability and reliability of particle methods for coastal/ocean engineering applications are also highlighted.
245 citations
143 citations
TL;DR: In this paper, a wave load and average wave overtopping rate at the rear side of the breakwater and in the front reservoir are discussed on the basis of physical 2D model tests carried out at Aalborg University (DK).
130 citations
TL;DR: In this article, the numerical model IHFOAM is extended to incorporate moving-boundary wave generation and absorption capabilities, and the authors obtain a solver that includes free surface flow through porous media, able to replicate the wave generation procedures of physical wave basins.
95 citations
TL;DR: The cost-sharing and multi-function of the breakwater-WEC system can help facilitate the engineering application of the floating breakwaters and WECs.
94 citations