...) and aquaculture cage is proposed, and its hydrodynamic responses under complicated sea conditions are investigated. As is known, the hydrodynamic analysis of monopile-supported OWT has been widely studied by the computational fluid mechanics (CFD) method, while the corresponding analysis of the integrated...

... of an analyses of potential environmental loads and responses of different platform types, including monopile, jacket, barge, spar and semi-submersible. BACKGROUND AND OBJECTIVES The island of Newfoundland is situated off the east coast of North America (Fig. 1). The region is well known for incursions...

... Soil Reaction of Monopile in Sand Considering Effects of Pile Installation Process Yayoi Ishii and Kenji Shimada Institute of Technology, Shimizu Corporation Koto-ku, Tokyo, Japan Takeshi Ishihara Department of Civil Engineering, The University of Tokyo Bunkyo-ku, Tokyo, Japan ABSTRACT Simple formulae...

... Around a Monopile Foundation Over A Submarine Slope Under Combined Waves and Current Bing Zhang1, Ke Sun2*, Risheng Wang2 1 Shandong Provincial Communications Planning and Design Institute Group Co, LTD, Jinan, China 2 Department of Civil Engineering, Shandong Jiaotong University, Jinan, China ABSTRACT...

... distribution shape proposed by Petrasovits was befitting to calculate the rotation point. The soil pressure distribution shape proposed by Prasad was more realistic and recommended for calculating the ultimate capacity of lateral loaded piles. INTRODUCTION Monopiles were the approved foundation...

... by using computational fluid dynamics (CFD) method. The flow and diffusion characteristic, and the residual rate of solidified slurry around the monopile foundation and pile group foundation are systematically investigated. It is found that the location downstream of the foundation is optimal for pumping...

... and current on the OWTs, the three-dimensional non-linear finite element analysis coupled with the BP neutral network model are applied on prediction of the static bearing performances of OWT monopile foundations. Meanwhile, the normal operating condition and the braked condition of OWT structures...

..., the soil response induced by the action of breaking waves around a monopile is discussed, and then the potential of instantaneous seabed liquefaction near the pile foundation is further evaluated. Numerical examples demonstrate the free surface water elevation and the distribution of seabed liquefaction...

...% to 60% as compared to a monopile where the optimal fin location was not at mudline. In addition, Durhkop and Grabe (2008) showed that any pile with fins has a stiffer system response as compared to a monopile, regardless of the shape and position of the wings. Subsequently, Peng et al., (2010) presented...

... ABSTRACT Compared with conventional monopile foundations, a hybrid monopile with wings attached to the perimeter is expected to exhibit better performance for supporting offshore wind turbines under huge lateral loads. Nevertheless, local scour could compromise the performance of the winged...

... Abstract Since the first monopiles were manufactured for offshore wind turbine foundations, the effect of entrapped water during impact pile driving (also referred to as water hammering) has been discussed within the industry. It is acknowledged that the water movement within the pile during...

... ABSTRACT This paper presents results of a hydrodynamic model test of a monopile modeling the NREL 5 MW offshore wind turbine. This paper mainly introduces the test process of the monopile offshore wind turbine under the action of shallow water breaking waves and provides an analysis...

... and mating of the tower stabbing cone with the preinstalled foundation. This installation approach is an analogy to the float-over deck installation method for the offshore platforms. A case study of offshore wind turbine installation onto a pre-installed monopile foundation by the new installation method...

... ABSTRACT In this study, an unresolved CFD-DEM was used to investigate a fluid flow and a behavior of sediment particles around a monopile. In order to consider the interaction between particles on the seabed and a current, an improved CFD-DEM solver was implemented within the OpenFOAM framework...

... monopiles in relatively shallow waters. The typical Keulegan-Carpenter ( KC ) number for offshore wind turbine monopiles implies that inertia loading will dominate and viscous drag forces can be neglected. For non-breaking waves the dominant load will be at the same frequency as the incoming waves and can...

... ABSTRACT Offshore wind power has a huge potential growth as a kind of renewable energy. Today one of the most common concepts for wind turbine foundations is the very large-diameter monopile. The conventional method for assessment of steel-pipe pile lateral performance is the application of p...

.... In this study, flow and scour around a monopile foundation exposed to a current were investigated by using the computational fluid dynamics (CFD) and discrete element method (DEM) coupling method. The open source computation fluid dynamics library, OpenFOAM, and a sediment transport library were coupled...

... ABSTRACT The lateral load response of a monopile is often modelled by p - y curves. However, the traditional formulation of p - y curves is unable to describe the behavior of liquefied soil. This paper presents a numerical investigation of how to develop p - y curves for monopiles...

... ABSTRACT The foundation stiffness under operational loads is a crucial aspect for the design of monopile foundations, as key design issues, structural natural eigenfrequencies as well as the structural fatigue damage are significantly affected. According to measurement results, the current...

... the differences between the models, focusing on the effect on the total fatigue experimented by the rotor on a reduced load matrix. A monopile for a 13.2 MW rotor was designed in the stiff-soft region and fully aeroservo-elastic simulations were run using the aero-servo-hydro-elastic tool 3DFloat. Results show...