Keynote Speakers | 主讲嘉宾
Decheng Wan, Shanghai Jiao Tong University, China
Prof. Decheng Wan is Head of Computational Marine Hydrodynamics Laboratory (CMHL, http://dcwan.sjtu.edu.cn/) at SJTU, chair professor of Chang Jiang Scholar and distinguished professor of Shanghai Eastern Scholar, president of International Society of Offshore and Polar Engineers (ISOPE), the chair of ISOPE International Hydrodynamic Committee, Advisor committee member of International Towing Tank Conference (ITTC), associate editor-in-chief of Journal of Hydrodynamics, editorial board member of Ocean Engineering and Applied Ocean Research, etc. Prof. Wan has been selected as TOP 2% scientists from all over the world since 2019. He is awarded the most cited researchers since 2018 by Elsevier, received CH Kim Award, ISOPE Award, Prof. Peiyuan Zhou’s First Award of Hydrodynamics, Best paper of Moan-Faltinsen Award, etc. His research interest is mainly on computational marine and coastal hydrodynamics, numerical marine basin, nonlinear wave theory, wave loads on structures, numerical analysis of riser vortex-induced vibration (VIV) and platform vortex-induced motion (VIM), fluid-structure interaction, offshore wind turbine and other offshore renewable resources, etc. In these areas, he has published over 580 papers and carried out more than 50 projects on marine hydrodynamics and computational hydrodynamics, has delivered over 100 invited or keynote presentations in international conferences. His remarkable work of development of numerical solvers in ship and ocean engineering have been recognized by the world-wide researchers in the field of marine hydrodynamics.
Speech title "Development of Efficient CFD Solver for Coupled Aero-Hydro Dynamic Flows around Floating Offshore Wind Turbine"
Abstract-In this presentation, an in-house FOWT-UALM-SJTU solver is introduced to achieve fully coupled aero-hydrodynamic simulations of floating offshore wind turbines (FOWTs) based on the unsteady actuator line model (UALM). The performance of wind turbine-floating platform-mooring system can be also predicted. The FOWT-UALM- SJTU solver can also simulate two wind turbines with in-line and offset layouts, and predict the aerodynamic loads, wake characteristics, vortex structure and the complex wake interaction phenomenon, and analyze the wake development and wake interaction among wind turbines in yaw condition. With the FOWT-UALM-SJTU solver, a numerical investigation has been executed based on the Lillgrund wind farm layout to discuss the aerodynamic loads, complex wake effects and significant wake interactions. By combining overset grid technique and in-house CFD hydrodynamic solver, naoe-FOAM-SJTU, the fully coupled aero-hydrodynamic simulations of floating offshore wind turbines are also presented.
Tianyun Li, Huazhong University of Science and Technology, China
Bio: Li Tianyun, full professor,
the vice dean of School of Naval Architecture & Ocean
Engineering, Huazhong University of Science and
Technology, an outstanding scholar in Huazhong. He has
authored three formal textbooks, led excellent
grassroots teaching organizations and first-class
curriculum construction in Hubei Province's
universities. Under his guidance, the project have
garnered the second prize of Hubei Province Teaching
Achievement Award, the first prize of the national
higher education teaching achievement of Ship and Ocean
Engineering subject, the first prize of teaching quality
at the university, and accolades for exemplary teacher
ethics and the third education award.
In addition to his teaching and administrative roles,
Professor Li also served as an editorial board member
for journals such as the Journal of Vibration
Engineering. He has directed nine national fund projects
and doctoral programs and multiple other types of
projects. His research findings have been applied in
practical engineering application, and his students’
doctoral thesis has been awarded the title of Excellent
Thesis by the China Shipbuilding Engineering Society.
Speech title "Control of low-frequency vibrational line spectrum of fluid-conveying pipeline based on the fusion of data and model"
Abstract-After the effective
vibration control of the equipment isolation system, the
vibrational characteristics and transmission of the
fluid-conveying pipeline have emerged as prominent
challenges in ship vibration reduction. The
low-frequency vibration line spectrum of the
fluid-conveying pipeline will affect the acoustic
stealth capability of the ship. However, the traditional
theoretical models fail to fully account for the
complexity of real physical objects, resulting in poor
precision. Furthermore, the exsiting measurement data
mining methods lack transparency in their processes and
interpretability of results. To address these issues,
The theoretical model and measured data are effectively
combined effectively by adopting the dynamic flexibility
method. A low-frequency vibration analysis model based
on data for fluid-conveying pipelines is established.
The optimizing method of this model is proposed to
achieve the function of "frequency offset" and vibration
reduction respectively. Additionally, interval
multi-objective optimization problems with uncertain
measured frequency response functions and robustness
evaluation problems for support stiffness optimization
schemes considering manufacturing errors are proposed,
which demonstrate significant effects in the model.
Run Liu, Tianjin University, China
Bio: Dr. Run Liu is one chair professor at Tianjin University and is in charge of geotechnical mechanics and engineering discipline, and director of the Institute of Geotechnical Engineering. She is the recipient of the National Science Fund for Distinguished Young Scholars, a leading talent in science and technology innovation under the "Ten-Thousand Talent Program" of the Organization Department of the Central Committee. She is Vice Chairman of the Maritime Energy Special Committee of the China Energy Research Society, etc. She has long been engaged in scientific research in offshore soil mechanics and new marine energy. She has won one first prize in national science and technology progress, and seven scientific special and first prizes at the provincial and ministerial level.
Speech title "Geotechnical engineering issues in the application of bucket foundations for offshore wind turbines"
Abstract-This talk briefly describes the main foundation types and development of offshore wind power in China, and the industrialization process of the giant multi-compartment suction caissons foundation by the Offshore Wind Power Team from Tianjin University. Focusing on the calculation of foundation bearing capacity and penetration resistance evaluation of the new suction caissons foundation structure, we describe the differences in geotechnical parameter test methods and values provided in the engineering geological survey report, and compare and analyze the applicable conditions of two commonly used shallow foundation bearing capacity calculation methods. Combined with actual field data, the problems existing in the calculation method of suction caissons foundation penetration resistance are explained.
Zhen Gao, Shanghai Jiao Tong University, China
Bio: Zhen Gao, PhD, currently is a professor at the School of Ocean and Civil Engineering, Shanghai Jiao Tong University. He is a Chang Jiang Chair Professor since 2021. He was a professor at the Department of Marine Technology, Norwegian University of Science and Technology from 2015 to 2022. He was elected as a member of the Norwegian Academy of Technological Sciences (NTVA) in 2020. He has been working on the research topics and educational programs in the areas of offshore renewable energy (with focus on offshore wind turbines, wave energy converters and tidal turbines), marine operations related to installation and maintenance of marine structures, stochastic load and response analysis for offshore platforms, structural reliability assessment. He is an associate editor for Journal of Marine Structures. He was the chairman for the Specialist Committee on Offshore Renewable Energy at ISSC from 2012 to 2018. He is the group leader of the Applied Technology of AI under the Ship Mechanics Committee of the CSNAME since 2023. He has published 248 peer-reviewed papers, including 151 journal papers and 97 conference papers. His Google Scholar H-index is 54 with a total citation of 8719.
Speech title "Offshore floating wind turbines – Research progress and future challenges"
Abstract-Under the needs for carbon reduction and wide use of renewable energy, offshore wind has made a significant development in recent years. Offshore wind based on bottom-fixed foundations has already been commercialized. When the offshore wind industry moves towards the deep sea environment, floating wind is the only cost-effective choice. However, it is still in the precommercial phase of the development, experiencing the technological bottlenecks and high costs. In this presentation, we will first introduce the trend of offshore wind development with respect to the increasing turbine and wind farm size, and the technological development of floating wind turbines. We will then focus on the integrated design methodology and analysis approaches for floating wind turbines, based on the first principles. The status and the challenges for the development and validation of accurate and efficient computer tools, considering the interactions between the environmental loads and structural responses, as well as the turbine/farm control will be discussed in detail. Finally, the aspects of the offshore construction, transportation, installation, operation and maintenance for floating wind farms, as compared to the bottom-fixed wind farms, will be briefly mentioned.
Pei Xin, Hohai University, China
Bio: Pei Xin, recipient of the National Science Fund for Distinguished Young Scholars, is primarily engaged in research on hydraulics and river dynamics. His research areas include surface water-groundwater interactions, coastal hydrodynamics and eco-geomorphology, and pore water flow and solute transport. He serves as an associate editor for Water Resources Research and is on the editorial boards of Advances in Water Resources and International Journal of Sediment Research. He has led several projects funded by the National Natural Science Foundation, including Distinguished Young Scholars, Key Joint Funds, and General Programs. He has published over 100 papers in journals such as Reviews of Geophysics, Geophysical Research Letters, Water Resources Research.
Speech title "Eco-geomorphological Processes in Coastal Wetlands"
Abstract-Coastal wetlands are highly productive ecosystems located at the land-ocean interface. They play a crucial role in biodiversity, carbon sequestration, coastal protection, and water purification. This presentation discusses the functions of salt marshes and the challenges they face. We describe ecological processes such as seed germination, clonal integration, growth, and death in an ecological model. This model is combined with a non-ecological model simulating hydrodynamics and sediment transport. Using the coupled models, we simulate the dynamic changes of coastal wetlands across different scales and scenarios. This allows us to explore the interactions between water, sediment, vegetation, and geomorphology. The results show significant changes in the geomorphology and tidal creek networks of coastal wetlands under various ecological processes, tidal ranges, and suspended sediment concentrations. The invasion and removal of exotic vegetation also have substantial impacts on coastal geomorphology. These findings enhance our understanding of coastal wetlands and provide references for future ecological protection and engineering practices.