Keynote Speakers | 主讲嘉宾
Koh Chan Ghee, National University of Singapore, Singapore
Bio: Professor C. G. Koh obtained his M.S. and Ph.D. at the University of California, Berkeley. He is currently the Director (Research) of the Coastal Protection & Flood Resilience Institute as well as the Director of Centre for Hazards Research at the National University of Singapore (NUS). He was the Lloyd’s Register Foundation Chair Professor at NUS from 2019 to 2023. His research interests are primarily in structural dynamics, structural monitoring, and more recently in offshore and coastal engineering. He has published more than 300 international journal papers and conference papers, six invited book chapters and a book. He has delivered more than 25 keynotes and many invited presentations in Asia, North America and Europe. He has been granted nine patents in seven countries and serves in five journal editorial boards, including Structural Health Monitoring and Journal of Sustainable Oceans and Coasts. His expertise in structural and offshore engineering has been well sought after by the industry, having served as advisor and specialist in more than 130 industrial and infrastructure projects.
Speech title "Consistent Particle Method for Computational Dynamics in Offshore and Coastal Engineering"
Abstract-Professor C. G. Koh and his research team at the National University of Singapore have developed a meshfree method for fluid dynamics, namely the Consistent Particle Method (CPM). By using a set of particles to represent fluid motion, this method can be used to simulate complex physical phenomena, particularly those involving violent and discontinuous water and sediment flows. Being fundamentally consistent with the Taylor series expansion, CPM approximates spatial derivatives with good accuracy without the use of kernel function or artificial values of physical parameters (such as viscosity and sound speed). This method has been applied to simulate wave impact on coastal/offshore structures, sediment transport and erosion, and fluid-structure interaction. This presentation will explain the numerical challenges and strategies for two-phase modelling of water and air, turbidity current and granular flow. Examples will be presented to compare CPM results with other numerical methods and experimental results.
Yi Wang, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, China
Bio: Prof. Yi Wang conducted research on the fundamental theory and technical methods for the exploitation of deep-sea natural gas hydrate systematically. He currently holds the position of Deputy Chief Engineer for the national major scientific and technological infrastructure project "Cold Seep Ecosystem Research Facility". Currently, he has led 11 projects, including the National Outstanding Youth Science Foundation. And he published a total of 120+ SCI papers. These publications have garnered 4000+ citations, resulting in an H-index of 40. He has received significant accolades, including a National Second Prize for Technical Invention (ranked 5th), two First Prize for Natural Science and Technology Invention from Guangdong Province, and the Guangdong Youth Science and Technology Innovation Award.
Speech title "Speech title: "Research on the Mechanisms and Key Technologies of Gas Production from Natural Gas Hydrate Reservoin"
Abstract-Global resource estimates indicate that natural gas hydrates are twice as abundant as conventional fossil fuels. In China alone, the natural gas hydrate resources in the South China Sea equate to half of the nation's total proven oil and gas reserves. Consequently, natural gas hydrates are regarded as a promising novel marine energy resource with immense potential for the future. This report addresses the pivotal scientific challenge concerning the complex multiphase, multi-field coupling evolution mechanisms and optimization methodologies during deep-sea natural gas hydrate dissociation. It aims to: (1) Develop physical simulation methods and original scientific instruments for hydrate extraction; (2) Reveal the fundamental mechanisms governing the complex multi-field coupling evolution during hydrate dissociation; (3) Establish a theoretical framework for evaluating dissociation efficiency tailored to practical extraction requirements; and (4) Propose optimized gas production strategies. This work provide the foundational theoretical basis and critical technical support for gas production field test projects of marine natural gas hydrates.
Ning Wang, Hainan University, China
Bio: Ning Wang, Changjiang Scholar Distinguished Professor, Fellow of the Royal Society of Chemistry (FRSC), and Deputy Director of the State Key Laboratory of Marine Resource Utilization in the South China Sea at Hainan University. He holds a Ph.D. from Tsinghua University and has conducted research at the University of California at Berkeley, and Nagoya University. His primary research focuses on the sustainable development and utilization of marine resources, particularly uranium extraction from seawater. He has published over 200 SCI-indexed papers in prestigious journals such as Science, Nature Sustainability, Nature Communications, National Science Review, Angewandte Chemie, and Advanced Materials, including more than 20 ESI Highly Cited Papers. He has been awarded the First Prize of Hainan Province Natural Science Award (ranked first) and the First Prize of China Invention Association (ranked first). He has also led major national research projects, including those under the National Key R&D Program and the National Major Scientific Research Instrument Development Program.
Speech title: "Uranium Extraction from Seawater and Detection of Nuclide"
Abstract-Nuclear power accounts for 13% of the world's electricity supply without producing greenhouse gases, and will make significant contributions to China's low-carobon objective. And uranium is a key raw material for the nuclear industry, and China is a depleted uranium country, relying on imports for over 90% of natural uranium raw materials. The total amount of uranium in the seawater of ocean is 4.5 billion tons, and it is estimated that the uranium content in the ocean is more than 1000 times that of known land deposits. Due to its low solubility, the concentration of soluble uranium in seawater is only 3.3 ppb. Moreover, coexisting metal ions in seawater, especially vanadium, can significantly compete with uranium, posing challenges for uranium extraction from seawater. In addition, complex marine environments can seriously harm adsorbents and reduce their service life. Therefore, the development of advanced adsorbents for uranium extraction from seawater with high loading capacity, high specificity, fast equilibration time, and high reusability is the goal pursued by scientists. In order to improve the performance of uranium extraction from seawater, new materials have been designed for enriching uranium resources in marine environments. The positive results have been achieved to improve the utilization rate of uranyl coordination sites in seawater, high selectivity adsorbents, and prevention and control of marine biofouling. The sufficient exposure of coordination sites, effective design of coordination space structure and functional groups, and effective construction of anti fouling adsorbents jointly promote the improvement of uranium adsorption performance in seawater extraction. Recently, the team has also conducted research on chemical detection technology for marine nuclear pollution elements.
Chi Zhang, Hohai University, China
Bio: Dr. Chi Zhang is a professor in Coastal Engineering at Hohai University, China. He received Ph.D. degree in Harbor, Coastal and Offshore Engineering in 2010. He was a visiting scholar during 2010-2011 at University of Dundee, UK. He currently serves the standing council member of China Association of Oceanic Engineering. His research has covered various subjects related to the monitoring, understanding and modelling of multi-scale hydrodynamic and morphodynamic processes in wave-dominated coasts, as well as their application in coastal disaster prevention, coastal restoration and integrated management. He is the author of over 100 academic articles, the compilator of 1 national standard and 5 industry standards. He has received the national excellent doctoral dissertation award nomination, the JWPCOE-ASCE best journal paper award, as well as more than 10 science and technology awards of national and provincial levels.
Speech title: "New Insights on Wave Runup Over Complex Shallow-Water Bathymetries ”
Abstract-Wave runup is a key hydrodynamic process responsible for coastal erosion, overtopping, and inundation. Accurate prediction of wave runup is critical for shoreline protection, disaster mitigation, spatial planning, and adaptive management. However, existing studies on wave runup rarely consider the effects of complex shallow-water bathymetries, which are prevalent in natural and engineered coastal environments. This study investigates wave runup over two representative types of complex bathymetries: artificial sandbars from shoreface nourishment and natural coral reefs. Laboratory experiments were conducted in wave flumes to explore wave transformation and runup processes, complemented by numerical modelling using the non-hydrostatic wave model SWASH. Results show that both types of complex bathymetries enhance low-frequency wave runup. On reef-fronted beaches, infragravity waves contribute significantly to total runup, especially under shallow reef submergence, with energy amplification exceeding 2.5 times due to standing waves. On nourished beaches, artificial sandbars can increase runup under certain storm conditions, driven by spectral energy shifts and resonance with the shoreline. Temporal variations in crest water depth and seaward slope modulate runup across frequency bands. Incorporating the dimensionless crest water depth into modified empirical formulas improves prediction accuracy and captures the saturation behavior of runup over submerged features. The findings provide new understanding of wave runup mechanisms over complex shallow-water bathymetries. The proposed parameterizations offer a foundation for assessments of coastal flood risk and early warning systems in areas with natural reefs or engineered underwater features.
Mingxiao Xie, Tianjin Research Institute for Water Transport Engineering.M.O.T., China
Bio: Dr. Xie is a nationally recognized young talent and a leading figure in science and technology innovation in the transport sector. He also serves as an expert committee member of the Ministry of Transport of China. His research focuses on coastal and estuarine engineering, with significant contributions in hydrodynamics and sediment transport theory, wave-current-structure interactions, and local scour around marine foundations. He has led three projects funded by the National Natural Science Foundation of China and has been deeply involved in major national infrastructure projects such as the Hong Kong–Zhuhai–Macao Bridge and the Hangzhou Bay Bridge. Dr. Xie has published over 100 academic papers, with representative works appearing in leading journals such as Coastal Engineering and Ocean Engineering. His research has received 19 national and ministerial-level awards.
Speech title: "Guaranteeing Water Intaking Safety: Technology and engineering practice for preventing debris intrusion in coastal power plants"
Abstract-Coastal power plants directly use seawater as the cooling water for their generator units. The intaking of a large amount of seawater creates a suction effect on surrounding waters, causing floating/suspending substances in the water to enter the water intake pump house. In recent years, due to changes in the marine ecological environment, the marine organisms such as algae, jellyfish and small shrimp have proliferated on a large scale, leading to accidents of unit failure due to the invasion of marine organisms into the water intake, significantly affecting the safety of power plant operation and causing impact on the regional power grid. In these years, we have conducted extensive research on technologies for reducing marine biological invasion and ensuring water intake safety. We have proposed a flow structure-based optimal design principle of intake channels, which could greatly reduce the suction effect by reasonably designing the planar layout of the intake channel. We also developed new types of debris blocking net devices such as plane nets and pocket nets and studied their dynamic response characteristics under wave and currents, as well as their blocking and collection effect on debris. Additionally, we have explored the technology of self-cleaning nets on the seaward side of water intake channels, which significantly relieves the pressure of cleaning the blocking nets. The above measures have been widely applied in multiple practical projects and have achieved success.
Guoqing Zhang, Dalian Maritime University, China
Bio: Professor Guoqing Zhang currently serves as the Director of the Discipline Construction Center of the Navigation College at Dalian Maritime University. His research mainly focuses on the guidance and control of marine unmanned system. Prof. Zhang has published more than 120 research articles and over 6 books. He holds 29 national invention patents as the first inventor and has presided over more than 10 scientific research projects, including the National Excellent Youth Science Fund of China, the National Natural Science Foundation of China, the Applied Fundamental Research Program of Liaoning Province, etc. Additionally, he has been selected for five consecutive years (2019 - 2024) as one of the world's top 2% scientists by Elsevier. He has also been honored as an Excellent Communist Party Member by the Ministry of Transport and an Outstanding Teacher in Liaoning Province.
Speech title: "Novel Control Scheme and Application for Intelligent of Marine Ships in Specific Waters"
Abstract-In the practical engineering, there exists several challenges for marine ship sailing in the specific waters, e.g., the complex sea environment, the limited communication bandwidth and the poor maneuverability. The intelligent navigation control technology is a significant mean to guarantee the safety of ships sailing in the specific water and is with the enormous application potentiality. For the purpose, a set of key technologies are presented in this report to develop the intelligent navigation and safety assurance control scheme for marine ships, where the requirement of the COLREGs and the MASS code have been considered. E.g., the dynamic game guidance strategy, the robust fault-tolerant control algorithm and the related application equipment. The related research achievement can effectively promote the transformation and upgrading of the high-end equipment manufacturing industry and lead the technological progress of the intelligent ship technology.
Han Soo LEE, Hiroshima University, Japan
Bio: Han Soo Lee (Bsc. Civil and Env. Eng., Msc. Coastal Eng., PhD Coastal and Ocean Eng.) is a full professor leading the Coastal Hazards and Energy System Science (CHESS) Lab at Center for the Planetary Health and Innovation Science (PHIS), The IDEC Institute, Hiroshima University, Japan. He is also a member of the Transdisciplinary Science and Engineering Program at the Graduate School of Advanced Science and Engineering, Hiroshima University. He received his B.S. and M.S. degrees at Sungkyunkwan University, Korea, and PhD degree at Kyoto University, Japan. He has been worked for Hiroshima University since 2007. His research and teaching are focused on coastal hazards evaluation and prediction, coastal flood risk assessment and management, renewable energy resource (wind, wave, and tide) assessment and planning, climate change impacts on coastal hazards and renewable energy resources, urban climate, water resource management, etc. He has involved in many inter-disciplinary projects and published more than 109 papers (77 SCI papers), and is an Editorial Board Member of Journal of Marine Science and Engineering, Frontiers in Marine Science, Sustainable Horizons, Ocean System Engineering, and AIMS Geosciences.
Speech title: "Abnormal tide in Hiroshima Bay and its process and prediction”
Abstract-Historically, the northern part of Hiroshima Bay has experienced abnormally high tides and consequential floods at Itsukushima Shrine, a world heritage site, without distinct causes. In this presentation, the abnormal tide phenomenon and its physical process in Hiroshima Bay in the Seto Inland Sea, Japan, will be discussed, based on field measurements and numerical modelling. Further, the prediction system for the abnormal tide will also be introduced.