Blar i Institutt for marin teknikk på forfatter "Li, Haoran"
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Analysis of difference-frequency wave loads and quadratic transfer functions on a restrained semi-submersible floating wind turbine
Li, Haoran; Bachynski-Polic, Erin Elizabeth (Peer reviewed; Journal article, 2021)One of the concerns regarding numerical simulation of floating wind turbines (FWTs) in waves is underprediction of resonant responses in the low-frequency range. In the present work, the difference-frequency wave loads on ... -
Effect of floater flexibility on global dynamic responses of a 15-MW semi-submersible floating wind turbine
Li, Haoran; Gao, Zhen; Bachynski-Polic, Erin Elizabeth; Zhao, Yuna; Fiskvik, Stian (Peer reviewed; Journal article, 2023)Floater structural flexibility plays a significant role in accurate predictions of global dynamic responses of floating wind turbines (FWTs), especially for ultra-large wind turbines with increasing size and cost-effective ... -
Experimental and numerical investigation of nonlinear diffraction wave loads on a semi-submersible wind turbine
Li, Haoran; Bachynski, Erin Elizabeth (Peer reviewed; Journal article, 2021)In a severe sea state, nonlinear wave loads can excite resonant responses of floating wind turbines either at high (structural) or low (rigid body motions) natural frequencies. In the present work, a computational fluid ... -
Experimental and numerically obtained low-frequency radiation characteristics of the OC5-DeepCwind semisubmersible
Li, Haoran; Bachynski-Polic, Erin Elizabeth (Peer reviewed; Journal article, 2021)Added mass and damping play a significant role in accurate prediction of floating wind turbine (FWT) motions, especially near the resonance frequencies. This paper investigates the still-water hydrodynamic characteristics ... -
Investigation of Combined Heating and Cooling Systems with Short-and Long-Term Storages
Shakerin, Mohammad; Eikeskog, Vilde; Li, Yantong; Harsem, Trond Thorgeir; Nord, Natasa; Li, Haoran (Peer reviewed; Journal article, 2022)Modern buildings in cold climates, like Norway, may have simultaneous heating and cooling demands. For these buildings, integrated heating and cooling systems with heat pumps, as well as short-term and long-term thermal ... -
Nonlinear Wave Loads, and Resulting Global Response Statistics of a Semi-Submersible Wind Turbine Platform with Heave Plates
Li, Haoran (Doctoral theses at NTNU;2021:278, Doctoral thesis, 2021)Floating wind turbines (FWTs) are considered to be a promising way to harness the energy from winds over deep water and farther offshore. However, there are some challenges to bring this technology to full maturity. In ... -
Numerical Simulation of Fully Nonlinear Interaction Between Regular and Irregular Waves and a 2D Floating Body
Li, Haoran; Bachynski, Erin Elizabeth (Chapter, 2019)A fully nonlinear Navier-Stokes/VOF numerical wave tank, developed within the open-source CFD toolbox OpenFOAM, is used to investigate the response of a moored 2D floating body to nonlinear wave loads. The waveDyMFoam ... -
OC6 Phase Ib: Validation of the CFD predictions of difference-frequency wave excitation on a FOWT semisubmersible
Lu, Wang; Robertson, Amy; Jonkman, Jason; Yu, Yi-Hsiang; Koop, Arjen; Nadal, Adrià Borràs; Li, Haoran; Bachynski-Polic, Erin Elizabeth; Pinguet, Romain; Shi, Wei; Zeng, Xinmeng; Zhou, Yang; Xiao, Qing; Kumar, Rupesh; Sarlak, Hamid; Ransley, Edward; Brown, Scott; Hann, Martyn; Netzband, Stefan; Wermbter, Malwin; López, Beatriz Méndez (Peer reviewed; Journal article, 2021)During the previous OC511 project, state-of-the-art mid-fidelity engineering tools for floating wind systems were found to consistently underpredict the nonlinear, low-frequency responses of semisubmersible offshore wind ... -
Time-domain floater stress analysis for a floating wind turbine
Gao, Zhen; Merino, Daniel; Han, Kai-Jia; Li, Haoran; Fiskvik, Stian (Peer reviewed; Journal article, 2023)There are increasing focuses on developing cost-effective floating wind turbines, for which efficient stress analysis methods are needed for floater structural design. Most of the today's studies focus on global analysis ... -
Validation and application of nonlinear hydrodynamics from CFD in an engineering model of a semi-submersible floating wind turbine
Li, Haoran; Bachynski-Polic, Erin Elizabeth (Peer reviewed; Journal article, 2021)Nonlinear hydrodynamics play a significant role in accurate prediction of the dynamic responses of floating wind turbines (FWTs), especially near the resonance frequencies. This study investigates the use of computational ...