Blar i NTNU Open på forfatter "Li, Lin"
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A Numerical Study on a Flopper Stopper for Leg Positioning of a Jack-Up Barge
Jiang, Zhiyu; Guachamin Acero, Wilson Ivan; Gao, Zhen; Li, Lin (Chapter; Peer reviewed, 2017)Jack-up barges are commonly used for marine operations in the offshore oil and gas, and offshore wind industries. A critical phase within the marine operation activities is the positioning of the jack-up legs onto the ... -
A Systematic Design Approach of Gripper’s Hydraulic System Utilized in Offshore Wind Turbine Monopile Installation
Rasekhi Nejad, Amir; Li, Lin; Guachamin Acero, Wilson Ivan; Moan, Torgeir (Chapter, 2018)This paper presents a systematic approach for designing the hydraulic mechanism as a part of the gripper system employed in offshore wind turbine monopile installation. Traditionally, such equipments used in marine operation ... -
Analysis of Lifting Operation of a Monopile Considering Vessel Shielding Effects in Short-crested Waves
Li, Lin; Gao, Zhen; Moan, Torgeir (Journal article, 2016)This paper addresses numerical simulations of the lifting operation of an offshore wind turbine monopile foundation, considering both the shielding effects of the vessel and the spreading of the waves. A numerical model ... -
Analysis of lifting operation of a monopile for an offshore wind turbine considering vessel shielding effects
Li, Lin; Gao, Zhen; Moan, Torgeir; Ormberg, Harald (Journal article; Peer reviewed, 2014)This study addresses numerical simulations of the lifting operation of a monopile for an offshore wind turbine with a focus on the lowering process. A numerical model of the coupled system of the monopile and vessel is ... -
Application-Oriented Retinal Image Models for Computer Vision
Silva, Ewerton; Torres, Ricardo Da Silva; Pinto, Allan; Li, Lin; Vianna, José; Azevedo, Rodolfo; Goldenstein, Siome (Peer reviewed; Journal article, 2020)Energy and storage restrictions are relevant variables that software applications should be concerned about when running in low-power environments. In particular, computer vision (CV) applications exemplify well that ... -
Assessment of Allowable Sea States During Installation of OWT Monopiles with Shallow Penetration in the Seabed
Li, Lin; Guachamin Acero, Wilson Ivan; Gao, Zhen; Moan, Torgeir (Journal article, 2016)Installation of offshore wind turbines (OWTs) requires careful planning to reduce costs and minimize associated risks. The purpose of this paper is to present a method for assessing the allowable sea states for the initial ... -
Comparative Study of Lifting Operations of Offshore Wind Turbine Monopile and Jacket Substructures Considering Vessel Shielding Effects
Li, Lin; Gao, Zhen; Moan, Torgeir (Chapter, 2015)In this paper, the shielding effects from an installation vessel during lifting operations are investigated. The study compared the lifting operations of two commonly used offshore wind turbine substructures: the monopile ... -
Correlation between Acceleration and Drivetrain Load Effects for Monopile Offshore Wind Turbines
Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Li, Lin; Moan, Torgeir (Journal article; Peer reviewed, 2016)This paper investigates the correlation between the tower-top axial acceleration and the load effects in drivetrain components in a monopile (bottom-fixed) offshore wind turbine. In designing offshore wind turbines, it is ... -
Dynamic Analysis of the Installation of Monopiles for Offshore Wind Turbines
Li, Lin (Doctoral thesis at NTNU;2016:139, Doctoral thesis, 2016)The installation of offshore wind farms presents great challenges as the industry move farther offshore and into deeper waters, and the turbines and foundations are getting larger and heavier. Current installation methods ... -
Dynamic response analysis of a catamaran installation vessel during the positioning of a wind turbine assembly onto a spar foundation
Jiang, Zhiyu; Li, Lin; Gao, Zhen; Halse, Karl Henning; Sandvik, Peter Christian (Journal article; Peer reviewed, 2018)Installation of floating wind turbines is a challenging task. The time and costs are closely related to the installation method chosen. This paper investigates the performance of an efficient installation concept – a ... -
Joint Distribution of Environmental Condition at Five European Offshore Sites for Design of Combined Wind and Wave Energy Devices
Li, Lin; Gao, Zhen; Moan, Torgeir (Journal article; Peer reviewed, 2015)The design of wind turbines requires information about joint data for wind and wave conditions. Moreover, combining offshore wind and wave energy facilities is a potential way to reduce the cost of offshore wind farms. To ... -
Joint Environmental Data at Five European Offshore Sites for Design of Combined Wind and Wave Energy Devices
Li, Lin; Gao, Zhen; Moan, Torgeir (Chapter; Peer reviewed, 2013)The costs for an offshore wind farm, especially with bottom fixed foundations increase significantly with increasing water depth. If costs can be reduced to a competitive level, the potential for wind farms in deep water ... -
Methodology for assessment of the operational limits and operability of marine operations
Guachamin Acero, Wilson Ivan; Li, Lin; Gao, Zhen; Moan, Torgeir (Journal article; Peer reviewed, 2016)This paper deals with a general methodology for assessment of the operational limits and the operability of marine operations during the planning phase with emphasis on offshore wind turbine (OWT) installation activities. ... -
MobText: A Compact Method for Scene Text Localization
Decker, Luis; Pinto, Allan; Campana, Jose; Neira, Manuel; Santos, Andreza; Conceição, Jhonatas; Angeloni, Marcus; Li, Lin; Torres, Ricardo Da Silva (Peer reviewed; Journal article, 2020)Abstract: Multiple research initiatives have been reported to yield highly effective results for the text detection problem. However, most of those solutions are very costly, which hamper their use in several applications ... -
Numerical analysis of a vessel- shaped offshore fish farm
Li, Lin; Jiang, Zhiyu; Høiland, Andreas Vangdal; Ong, Muk Chen (Journal article; Peer reviewed, 2018)The aquaculture industry is aiming to move fish farms from nearshore areas to open seas because of many attractive advantages in the open water. However, one major challenge is to design the structure to withstand the ... -
Numerical modelling of hydrodynamic responses of Ocean Farm 1 in waves and current and validation against model test measurements
Jin, Jingzhe; Su, Biao; Dou, Rui; Luan, Chenyu; Li, Lin; Nygaard, Ivar; Fonseca, Nuno; Gao, Zhen (Peer reviewed; Journal article, 2021)With the continuous growing of the aquaculture industry and increasingly limited fish farming sites at close to shore areas both in Norway and worldwide, there is a need to develop fish farms suitable for aquaculture ... -
Numerical Simulations for Installation of Offshore Wind Turbine Monopiles Using Floating Vessels
Li, Lin; Gao, Zhen; Moan, Torgeir (Chapter; Peer reviewed, 2013)Monopiles are the most commonly used support structures for offshore wind turbines with up to 40m water depth due to the simplicity of the structure. The installation of turbine support structures can be carried out by a ... -
Numerical study on the heading misalignment and current velocity reduction of a vessel-shaped offshore fish farm
Li, Lin; Jiang, Zhiyu; Wang, Jungao; Ong, Muk Chen (Peer reviewed; Journal article, 2019)Recently, the concept of a vessel-shaped fish farm was proposed for open sea applications. The fish farm comprises a vessel-shaped floater, five fish cages, and a single-point mooring system. Such a system weathervanes, ... -
Operability Analysis of Monopile Lowering Operation Using Different Numerical Approaches
Li, Lin; Gao, Zhen; Moan, Torgeir (Journal article, 2016)Offshore installation operations require careful planning in the design phase to minimize associated risks. This study addresses numerical modeling and time-domain simulations of the lowering operation during installation ... -
Predicting the Heading Misalignment of a Vessel-Shaped Offshore Fish Farm Under Waves and Currents
Li, Lin; Jiang, Zhiyu; Wang, Jungao; Ong, Muk Chen (Chapter, 2018)A vessel-shaped fish farm concept for open sea applications has been proposed recently. The whole system consists of a vessel-shaped floater, fish cages positioned longitudinally along the floater, and a single-point mooring ...