Blar i NTNU Open på forfatter "Cheng, Zhengshun"
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Field Measurements of Inhomogeneous Wave Conditions in Bjørnafjorden
Cheng, Zhengshun; Svangstu, Erik; Gao, Zhen; Moan, Torgeir (Journal article; Peer reviewed, 2018)Due to the complex topography in a fjord, wave conditions differ from those of ocean waves. In this study, characteristics of wave conditions in the Bjørnafjorden in Hordaland County, Norway were thoroughly investigated ... -
Global slamming forces on jacket structures for offshore wind applications
Cheng, Zhengshun; Muskulus, Michael (Journal article; Peer reviewed, 2018)This study investigates the global slamming forces due to plunging breaking waves on a jacket structure, based on the statistical analysis of the experimental data from the WaveSlam project. Hammer tests and wave tests ... -
Hydrodynamic load modeling and analysis of a floating bridge in homogeneous wave conditions
Cheng, Zhengshun; Gao, Zhen; Moan, Torgeir (Journal article; Peer reviewed, 2018)The Norwegian Public Road Administration (NPRA) is currently developing the E39 ferry-free project, in which several floating bridges will be built across deep and wide fjords. In this study, we consider the floating bridge ... -
Integrated Dynamic Analysis of Floating Vertical Axis Wind Turbines
Cheng, Zhengshun (Doctoral thesis at NTNU;2016:177, Doctoral thesis, 2016) -
Long-term joint distribution of environmental conditions in a Norwegian fjord for design of floating bridges
Cheng, Zhengshun; Svangstu, Erik; Moan, Torgeir; Gao, Zhen (Journal article; Peer reviewed, 2019)A floating bridge is an attractive solution for crossing wide and deep fjords. To design a reliable and cost-effective floating bridge, it is very important to accurately evaluate the long-term environmental conditions at ... -
Numerical Modeling and Dynamic Analysis of a Floating Bridge Subjected to Wind, Wave, and Current Loads
Cheng, Zhengshun; Gao, Zhen; Moan, Torgeir (Journal article; Peer reviewed, 2018)Designing reliable and cost-effective floating bridges for wide and deep fjords is very challenging. The floating bridge is subjected to various environmental loads, such as wind, wave, and current loads. All these loads ... -
Numerical Modelling and Analysis of the Dynamic Motion Response of an Offshore Wind Turbine Blade during Installation by a Jack-Up Crane Vessel
Zhao, Yuna; Cheng, Zhengshun; Sandvik, Peter Christian; Gao, Zhen; Moan, Torgeir; van Buren, Eric (Journal article; Peer reviewed, 2018)Jack-up crane vessels are commonly used to install offshore wind turbine blades and other components. A jack-up crane vessel is subjected to wind and wave loads, which cause motion at crane tip. Excessive motion at crane ... -
Numerical modelling and dynamic response analysis of a 10 MW semi-submersible floating offshore wind turbine subjected to ship collision loads
Yu, Zhaolong; Amdahl, Jørgen; Rypestøl, Martin; Cheng, Zhengshun (Journal article; Peer reviewed, 2022)The number of installed offshore wind turbines is continuously growing worldwide in recent years. Offshore wind farms are generally located near the coast close to traffic lanes and are exposed to the risk of collisions ... -
Numerical Study on Aerodynamic Damping of Floating Vertical Axis Wind Turbines
Cheng, Zhengshun; Madsen, Helge A.; Gao, Zhen; Moan, Torgeir (Journal article; Peer reviewed, 2016)Harvesting offshore wind energy resources using floating vertical axis wind turbines (VAWTs) has attracted an increasing interest in recent years. Due to its potential impact on fatigue damage, the aerodynamic damping ... -
Numerical study on the feasibility of offshore single blade installation by floating crane vessels
Zhao, Yuna; Cheng, Zhengshun; Gao, Zhen; Sandvik, Peter Christian; Moan, Torgeir (Journal article; Peer reviewed, 2019)Compared with jack-up crane vessels that are now widely used in offshore wind turbine installation, floating crane vessels are more flexible with respect to working water depth and are much faster in relocation. They are ... -
Power performance and dynamic responses of a combined floating vertical axis wind turbine and wave energy converter concept
Cheng, Zhengshun; Wen, Ting-Rui; Ong, Muk Chen; Wang, Kai (Journal article; Peer reviewed, 2019)Currently, the development of floating wind turbines and wave energy converters (WECs) is both facing the challenge of high cost-of-energy (CoE). A promising way to reduce the CoE is to employ combined wind and wave energy ... -
Shear lag effects on global bending moments in a long-span pontoon bridge under self-weight, traffic and environmental loads
Luan, Chenyu; Moan, Torgeir; Kvåle, Knut Andreas Kirkestuen; Cheng, Zhengshun (Peer reviewed; Journal article, 2023)The present paper deals with a systematic study of the shear lag effect on the bending moment distribution in girders of representative pontoon-type floating bridges (PTFBs). Comparative and parametric studies for ... -
Spar-type vertical-axis wind turbines in moderate water depth: A feasibility study
Wen, Ting-Rui; Wang, Kai; Cheng, Zhengshun; Ong, Muk Chen (Journal article; Peer reviewed, 2018)The applications of floating vertical-axis wind turbines (VAWTs) in deep water have been proposed and studied by several researchers recently. However, the feasibility of deploying a floating VAWT at a moderate water depth ... -
Wave load effect analysis of a floating bridge in a fjord considering inhomogeneous wave conditions
Cheng, Zhengshun; Gao, Zhen; Moan, Torgeir (Journal article; Peer reviewed, 2018)When designing a floating bridge crossing a deep and wide fjord, a homogeneous wave field is usually assumed for simplicity. However, waves in fjords are commonly inhomogeneous, and hence the mentioned design practice ...