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Proceedings Papers

Effects of Aggregation on Gravity Settlement of Submicron Aerosols Under High Temperature and High Humidity Conditions

Jun Yan Chen, Pu Zhen Gao, Hai Feng Gu, Hui Yu Yu

Proc. ASME. ICONE29, Volume 15: Student Paper Competition, V015T16A074, August 8–12, 2022

Paper No: ICONE29-92065

DOI: https://doi.org/10.1115/ICONE29-92065

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Topics: Aerosols, Gravity (Force), High temperature

Proceedings Papers

Dynamic Property of a Floating Multi-Body System for Dual Barge Float-Over Operation With a Mechanical TLS (Topside Lifting System)

Shujie Zhao, Zhen Gao, Dejiang Li, Xun Meng

Proc. ASME. OMAE2022, Volume 5B: Ocean Engineering; Honoring Symposium for Professor Günther F. Clauss on Hydrodynamics and Ocean Engineering, V05BT06A012, June 5–10, 2022

Paper No: OMAE2022-78400

DOI: https://doi.org/10.1115/OMAE2022-78400

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Topics: Multibody systems, Stress, Motion compensation, Waves, Couplings, Dampers, Degrees of freedom, Design, Eigenvalues, Fluid-dynamic forces

Proceedings Papers

Analysis of a Hybrid Mooring System Concept for a Semi-Submersible Wind Turbine in Intermediate Water Depth Under Operational, Extreme, and Yaw Error Conditions

Qun Cao, Erin E. Bachynski-Polić, Zhen Gao, Longfei Xiao, Zhengshun Cheng, Mingyue Liu

Proc. ASME. OMAE2022, Volume 8: Ocean Renewable Energy, V008T09A017, June 5–10, 2022

Paper No: OMAE2022-78666

DOI: https://doi.org/10.1115/OMAE2022-78666

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Topics: Errors, Mooring, Semi-submersible offshore structures, Water, Wind turbines, Yaw, Wind, Surges, Tension, Waves

Proceedings Papers

Motion Response Prediction of Marine Vessels Based on Hydrodynamic Models Updated Through On-Site Measurements

Gowtham Radhakrishnan, Bernt J. Leira, Zhen Gao, Svein Sævik, Alojz Gomola

Proc. ASME. OMAE2022, Volume 2: Structures, Safety, and Reliability, V002T02A018, June 5–10, 2022

Paper No: OMAE2022-78912

DOI: https://doi.org/10.1115/OMAE2022-78912

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Topics: Spectra (Spectroscopy), Vessels, Waves, Optimization, Uncertainty, Errors, North Sea, Ocean engineering, Physics

Journal Articles

Digital Twin Based Virtual Sensor for Online Fatigue Damage Monitoring in Offshore Wind Turbine Drivetrains

Felix C. Mehlan, Amir R. Nejad, Zhen Gao

J. Offshore Mech. Arct. Eng. December 2022, 144(6): 060901.

Paper No: OMAE-21-1149

DOI: https://doi.org/10.1115/1.4055551

Published Online: October 3, 2022

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Topics: Bearings, Fatigue damage, Sensors, Stress, Kalman filters, Digital twin, Dynamics (Mechanics), Wind turbines, Mechanical drives, Simulation

Proceedings Papers

Estimation of Wind Turbine Gearbox Loads for Online Fatigue Monitoring Using Inverse Methods

Felix C. Mehlan, Amir R. Nejad, Zhen Gao

Proc. ASME. OMAE2021, Volume 9: Ocean Renewable Energy, V009T09A021, June 21–30, 2021

Paper No: OMAE2021-62181

DOI: https://doi.org/10.1115/OMAE2021-62181

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Topics: Fatigue, Mechanical drives, Stress, Wind turbines, Fatigue damage, Bearings, Dynamics (Mechanics), Generators, Simulation, Torque measurement

Proceedings Papers

System Uncertainty Effects on the Wave Frequency Response Of Floating Vessels Based on Polynomial Chaos Expansion

Gowtham Radhakrishnan, Xu Han, Svein Sævik, Zhen Gao, Bernt Johan Leira

Proc. ASME. OMAE2021, Volume 2: Structures, Safety, and Reliability, V002T02A016, June 21–30, 2021

Paper No: OMAE2021-62542

DOI: https://doi.org/10.1115/OMAE2021-62542

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Topics: Chaos, Frequency-domain analysis, Polynomials, Sensitivity analysis, Uncertainty, Vessels, Wave frequency

Journal Articles

Recent Advances in Integrated Response Analysis of Floating Wind Turbines in a Reliability Perspective

Torgeir Moan, Zhen Gao, Erin E. Bachynski, Amir R. Nejad

J. Offshore Mech. Arct. Eng. October 2020, 142(5): 052002.

Paper No: OMAE-19-1099

DOI: https://doi.org/10.1115/1.4046196

Published Online: March 26, 2020

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Topics: Blades, Design, Floating wind turbines, Stress, Uncertainty, Wind turbines, Wind, Reliability, Waves, Inspection

Proceedings Papers

Extreme Response Analysis of an End-Anchored Floating Bridge

Zhengshun Cheng, Zhen Gao, Torgeir Moan

Proc. ASME. OMAE2019, Volume 7A: Ocean Engineering, V07AT06A051, June 9–14, 2019

Paper No: OMAE2019-96793

DOI: https://doi.org/10.1115/OMAE2019-96793

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Topics: Bridges (Structures), Structural response analysis, Design, Cables, Engineering simulation, Girders, Seas, Simulation

Proceedings Papers

Structural Safety Assessment of Marine Operations From a Long-Term Perspective: A Case Study of Offshore Wind Turbine Blade Installation

Amrit Shankar Verma, Zhen Gao, Zhiyu Jiang, Zhengru Ren, Nils Petter Vedvik

Proc. ASME. OMAE2019, Volume 3: Structures, Safety, and Reliability, V003T02A074, June 9–14, 2019

Paper No: OMAE2019-96686

DOI: https://doi.org/10.1115/OMAE2019-96686

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Topics: Blades, Offshore wind turbines, Safety, Ocean engineering, Probability, Seas, Failure, Structural failures, Crane barges, Damage

Journal Articles

Loading and Blade Deflection of a Tidal Turbine in Waves

Xiaoxian Guo, Zhen Gao, Xin Li, Jianmin Yang, Torgeir Moan

J. Offshore Mech. Arct. Eng. August 2019, 141(4): 041902.

Paper No: OMAE-17-1202

DOI: https://doi.org/10.1115/1.4041998

Published Online: January 17, 2019

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Topics: Blades, Deflection, Waves, Tidal turbines, Stress

Proceedings Papers

Effect of Foundation Modeling of a Jack-Up Crane Vessel on the Dynamic Motion Response of an Offshore Wind Turbine Blade During Installation

Yuna Zhao, Zhengshun Cheng, Zhen Gao, Torgeir Moan

Proc. ASME. IOWTC2018, ASME 2018 1st International Offshore Wind Technical Conference, V001T01A040, November 4–7, 2018

Paper No: IOWTC2018-1010

DOI: https://doi.org/10.1115/IOWTC2018-1010

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Topics: Blades, Crane barges, Jack-up drilling rigs, Modeling, Offshore wind turbines, Soil, Cranes, Vessels, Ocean engineering, Stress

Proceedings Papers

Parametric Study of a Counter Weight Suspension System for the TetraSpar Floating Wind Turbine

Brandon T. Pereyra, Zhiyu Jiang, Zhen Gao, Morten T. Andersen, Henrik Stiesdal

Proc. ASME. IOWTC2018, ASME 2018 1st International Offshore Wind Technical Conference, V001T01A003, November 4–7, 2018

Paper No: IOWTC2018-1079

DOI: https://doi.org/10.1115/IOWTC2018-1079

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Topics: Floating wind turbines, Suspension systems, Weight (Mass), Design, Chain, Stress, Center of mass, Mass production, Modeling, Stiffness

Proceedings Papers

A Summary of the Recent Work at NTNU on Marine Operations Related to Installation of Offshore Wind Turbines

Zhen Gao, Amrit Verma, Yuna Zhao, Zhiyu Jiang, Zhengru Ren

Proc. ASME. OMAE2018, Volume 11A: Honoring Symposium for Professor Carlos Guedes Soares on Marine Technology and Ocean Engineering, V11AT12A044, June 17–22, 2018

Paper No: OMAE2018-78334

DOI: https://doi.org/10.1115/OMAE2018-78334

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Topics: Offshore wind turbines, Blades, Damage, Vessels, Wind turbines, Dynamic response, Rotors, Composite materials, Cranes, Engineering simulation

Proceedings Papers

Dynamic Response Analysis of a Floating Bridge Subjected to Environmental Loads

Zhengshun Cheng, Zhen Gao, Torgeir Moan

Proc. ASME. OMAE2018, Volume 7A: Ocean Engineering, V07AT06A052, June 17–22, 2018

Paper No: OMAE2018-77590

DOI: https://doi.org/10.1115/OMAE2018-77590

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Topics: Bridges (Structures), Dynamic response analysis, Stress, Waves, Wind, Design, Cables, Computer simulation, Damping, Girders

Proceedings Papers

Hydro-Elastic Analysis of a Floating Bridge in Waves Considering the Effect of the Hydrodynamic Coupling and the Shore Sides

Shi Deng, Shixiao Fu, Torgeir Moan, Wei Wei, Zhen Gao

Proc. ASME. OMAE2018, Volume 1: Offshore Technology, V001T01A039, June 17–22, 2018

Paper No: OMAE2018-78738

DOI: https://doi.org/10.1115/OMAE2018-78738

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Topics: Bridges (Structures), Waves, Finite element methods, Flow (Dynamics), Stress, Boundary-value problems, Degrees of freedom, Displacement, Dynamics (Mechanics), Equations of motion

Proceedings Papers

A Global-Local Damage Assessment Methodology for Impact Damage on Offshore Wind Turbine Blades During Lifting Operations

Amrit Shankar Verma, Philipp Ulrich Haselbach, Nils Petter Vedvik, Zhen Gao

Proc. ASME. OMAE2018, Volume 10: Ocean Renewable Energy, V010T09A064, June 17–22, 2018

Paper No: OMAE2018-78218

DOI: https://doi.org/10.1115/OMAE2018-78218

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Topics: Blades, Damage, Damage assessment, Offshore wind turbines, Delamination, Failure mechanisms, Vessels, Shells, Wind turbines, Composite materials

Proceedings Papers

An Analytical Model of Floating Offshore Wind Turbine Blades Considering Bending-Torsion Coupling Effect

Xiaoqi Qu, Yougang Tang, Zhen Gao, Yan Li, Liqin Liu

Proc. ASME. OMAE2018, Volume 10: Ocean Renewable Energy, V010T09A088, June 17–22, 2018

Paper No: OMAE2018-78571

DOI: https://doi.org/10.1115/OMAE2018-78571

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Topics: Blades, Offshore wind turbines, Torsion, Nonlinear vibration, Deformation, Dynamic response, Eigenvalues, Hamilton's principle, Partial differential equations, Rotating blades

Journal Articles

Numerical Modeling and Dynamic Analysis of a Floating Bridge Subjected to Wind, Wave, and Current Loads

Zhengshun Cheng, Zhen Gao, Torgeir Moan

J. Offshore Mech. Arct. Eng. February 2019, 141(1): 011601.

Paper No: OMAE-18-1032

DOI: https://doi.org/10.1115/1.4040561

Published Online: July 24, 2018

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Topics: Bridges (Structures), Girders, Stress, Waves, Wind, Turbulence, Spectra (Spectroscopy), Modeling, Wind waves

Proceedings Papers

Passive Control of a Pentapod Offshore Wind Turbine Under Earthquakes by Using Tuned Mass Damper

Wenhua Wang, Zhen Gao, Xin Li, Torgeir Moan, Bin Wang

Proc. ASME. OMAE2017, Volume 10: Ocean Renewable Energy, V010T09A045, June 25–30, 2017

Paper No: OMAE2017-61468

DOI: https://doi.org/10.1115/OMAE2017-61468

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Topics: Dampers, Earthquakes, Offshore wind turbines, Passive control, Finite element model, Dynamic response, Seismic waves, Stress

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Journal citation

NARROW

Effects of Aggregation on Gravity Settlement of Submicron Aerosols Under High Temperature and High Humidity Conditions

Dynamic Property of a Floating Multi-Body System for Dual Barge Float-Over Operation With a Mechanical TLS (Topside Lifting System)

Analysis of a Hybrid Mooring System Concept for a Semi-Submersible Wind Turbine in Intermediate Water Depth Under Operational, Extreme, and Yaw Error Conditions

Motion Response Prediction of Marine Vessels Based on Hydrodynamic Models Updated Through On-Site Measurements

Digital Twin Based Virtual Sensor for Online Fatigue Damage Monitoring in Offshore Wind Turbine Drivetrains

Estimation of Wind Turbine Gearbox Loads for Online Fatigue Monitoring Using Inverse Methods

System Uncertainty Effects on the Wave Frequency Response Of Floating Vessels Based on Polynomial Chaos Expansion

Recent Advances in Integrated Response Analysis of Floating Wind Turbines in a Reliability Perspective

Extreme Response Analysis of an End-Anchored Floating Bridge

Structural Safety Assessment of Marine Operations From a Long-Term Perspective: A Case Study of Offshore Wind Turbine Blade Installation

Loading and Blade Deflection of a Tidal Turbine in Waves

Effect of Foundation Modeling of a Jack-Up Crane Vessel on the Dynamic Motion Response of an Offshore Wind Turbine Blade During Installation

Parametric Study of a Counter Weight Suspension System for the TetraSpar Floating Wind Turbine

A Summary of the Recent Work at NTNU on Marine Operations Related to Installation of Offshore Wind Turbines

Dynamic Response Analysis of a Floating Bridge Subjected to Environmental Loads

Hydro-Elastic Analysis of a Floating Bridge in Waves Considering the Effect of the Hydrodynamic Coupling and the Shore Sides

A Global-Local Damage Assessment Methodology for Impact Damage on Offshore Wind Turbine Blades During Lifting Operations

An Analytical Model of Floating Offshore Wind Turbine Blades Considering Bending-Torsion Coupling Effect

Numerical Modeling and Dynamic Analysis of a Floating Bridge Subjected to Wind, Wave, and Current Loads

Passive Control of a Pentapod Offshore Wind Turbine Under Earthquakes by Using Tuned Mass Damper

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