Wave energy converter and large floating platform integration: A review

1.1 Irregular waves According to Piersonl3) the irregular waves may be described by an aggregation of regular waves, namely N E(t) ) Eycoslreit + ei) (1 .1) Fl Where o.J o)j kiUcosp is the encounter wave frequency, is a random phase angle, uniformly distributed in the regime of (-n, fi). Ej is the wave amplitude of the j-th wave component, which may be obtained from the wave energy spectrum SE(

研究解説 : The Second Order Hydrodynamic Actions On A Flexible Body (Part II)

Second-order hydroelastic analysis of a flexible floating structure under spatially inhomogeneous waves

The rapid growth of marine renewables has led to the development of very large floating structures (VLFS) that are designed to operate in deep seas. It is significant to understand the mechanism of the coupled effects between deformable VLFS and catenary mooring system. This paper presents a time-domain hydro-elastic-moored model developed by integrating a quasi-static mooring module into a fully coupled Computational Fluid Dynamics (CFD) - discrete-module-beam (DMB) approach. The model is used to investigate the coupled effects between structural hydroelasticity and loose-type mooring systems on a deformable VLFS in waves. The mooring and hydroelasticity codes are validated separately and show favourable agreement with other numerical and experimental results. Then the coupled effects between the mooring system and structural hydroelasticity are evaluated by assigning various design parameters, i.e., VLFS structural stiffness and mooring stiffness. The numerical results, including dynamic motions, longitudinal vertical bending moments (VBMs) and mooring tension forces are presented and analysed. These results can be used to design a VLFS with mooring in medium-deep sea, and help with the conventional mooring design for a less-stiffness VLFS due to hydroelastic response. 

Coupled analysis between catenary mooring and VLFS with structural hydroelasticity in waves

The horizontal rotor wave energy converter is a newly designed wave energy converter. While the mooring system plays a vital role in keeping the device floating stably, the selection of the mooring angle has immediate effects on the device’s floating stability and energy generation efficiency. Given the properties of wave energy along the coast in Shandong Province, this study combines wave statistics gathered from field measurements of a certain area in the Bohai Sea with hydrological data obtained in a field test in the same sea area and adopts Stokes’ fifth-order wave theory to theoretically design and simulate the mooring system for the new type of power generating device. With the help of AQWA software, data on the dynamics of the device at various angles are obtained to construct models and carry out regular wave experiments according to the most appropriate mooring angles to show the validity of the selected mooring angles. The consistency of the results between the experiment and simulation confirms that under the same working conditions of regular waves, as the mooring angle increases, the roll angle decreases first and then increases, the pitch angle barely varies, and the yaw angle decreases first and then increases. The adoption of this simulation method and the gathered experimental data help to provide theoretical and practical bases for choosing the mooring method for the engineering prototype and obtaining a reliable supply of power.

https://www.mdpi.com/1996-1073/14/2/344/pdf

Mooring Angle Study of a Horizontal Rotor Wave Energy Converter

Coupled analysis between mooring system and VLFS with an effect of elastic deflection of floater

The invention discloses a spar type 5MW marine floating wind power generation platform and relates to the field of wind energy utilization. The spar type 5MW marine floating wind power generation platform comprises a 5MW fan, a central column, a buoyancy tank, a ballast tank, a damping plate and a supporting rod; the 5MW fan is placed above the platform and connected with the central column; the central column is directly connected with the buoyancy tank to form a main floating body of the platform; the central column is arranged above the buoyancy tank; the section dimension of the central column is less than that of the buoyancy tank; the ballast tank is arranged under the buoyancy tank; the buoyancy tank is connected with the ballast tank through the supporting rod; and a damping plateis arranged between the buoyancy tank and the ballast tank. Wind power generation in deep ocean is realized, and the safety and stability of the floating wind power generation platform are improved.

Spar type 5MW marine floating wind power generation platform

The invention relates to a pile mooring device suitable for a shallow water floating platform, the device includes a plurality of lower buoys spaced apart, an upper surface of each of the lower buoysis provided with an intermediate column, the height of each intermediate column is the same, and the top surfaces of a plurality of intermediate columns are simultaneously installed with an upper platform structure, wherein the upper platform structure is horizontally installed, and a plurality of piles are inserted at the front end surface of the upper platform structure, each pile is inserted into the submarine foundation, and after insertion, the top surface of the piles is higher than the top surface of the upper platform structure; an anti-collision pad is arranged in the distance betweenthe pile and the front end surface of the upper platform structure; Mooring cables are respectively fixed on both end faces of the pile, and a plurality of sets of cable holes are spaced apart from the front end surface of the upper platform structure. One end of the mooring cable is fixed on the pile, and the other end of the mooring cable is connected to the anchor through the guide rope hole.Two strands of mooring cables are respectively installed on each pile, and the mooring cable is in a fan-shaped structure divergent form. The device is compact in structure and reliable in operation.

Pile mooring device suitable for a shallow water floating platform

Evaluation of hydroelastic responses of a 180k DWT large bulk carrier

A mooring system has been designed for the position keeping of a two-module semi-submersible platform which is connected by hinge-type connectors. Under the excitation of ocean waves, the relative motion between the two modules can be significant. It is therefore no longer adequate to model the platform as a single rigid body in the analysis of the performance of the mooring system. In this study, an analysis method has been developed based on the three-dimensional frequency domain hydroelasticity theory in conjunction with the time domain quasi-static analysis method of mooring actions, which takes into account of the coupling effect of the platform motion and mooring tension. The proposed method is verified by comparing the numerical results with the measured data obtained from the on-site measurements. The comparison shows a good agreement, and demonstrates the feasibility and effectiveness of the proposed method for the analysis of the module responses and mooring tensions of multi-module floating platforms.

Performance analysis of the mooring system of a two-module scientific research and demonstration platform

Popular Tasks used by Researchers

How can I help with your research?

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

We encountered an error while loading the panel. Please try refreshing the page.

Something went wrong

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

Anyone with the link can view this chat. You can switch it back to private anytime.

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Bo Wu

Author Tools

Chat about Author