Conceptual Design and Hydrodynamic Performance of a Modular Hybrid Floating Foundation

The comprehensive utilization of offshore renewable energies is an effective way to solve the intermittency and variability of power supply. This paper aims to present a hybrid floating system (HFS) based on a modular buoyancy-distributed floating foundation (BDFF) that can be equipped with a horizo...

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Main Authors:	Xiaobin Qu, Yingxue Yao, Jianjun Du
Format:	article
Language:	EN
Published:	MDPI AG 2021
Subjects:	hybrid floating system comprehensive utilization modular design buoyancy-distributed floating foundation Technology T
Online Access:	https://doaj.org/article/f94dbe194aad4d5b853dc88beafd59b0
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spelling	oai:doaj.org-article:f94dbe194aad4d5b853dc88beafd59b02021-11-25T17:27:09ZConceptual Design and Hydrodynamic Performance of a Modular Hybrid Floating Foundation10.3390/en142276051996-1073https://doaj.org/article/f94dbe194aad4d5b853dc88beafd59b02021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7605https://doaj.org/toc/1996-1073The comprehensive utilization of offshore renewable energies is an effective way to solve the intermittency and variability of power supply. This paper aims to present a hybrid floating system (HFS) based on a modular buoyancy-distributed floating foundation (BDFF) that can be equipped with a horizontal-axis wind turbine, solar panels, and wave energy converters (WEC). A simplified test model with a Froude scale ratio of 1/10 is employed to perform the experiments in a deep-water basin to validate the numerical results computed from the code program ANSYS AQWA based on the potential flow theory. The Response Amplitude Operators (RAOs) under regular waves are compared to evaluate the hydrodynamic performance. There is a good agreement in the surge, pitch, and heave RAOs for experiments and the numerical simulation, with a maximum of 6.45 degrees per meter for the pitch motion. Furthermore, the mooring tensions in the time domain are analyzed under different wave conditions.The tension RAOs from simulations are slightly higher than those from measurements with a maximum value at the period of 3.416 s. The mooring line on the windward side has a more considerable mooring tension that is far less than the allowable tensile strength, especially under the wave height of 2 m and the wave period of 2.873 s. The influence of loaded weight representing solar panels is weak, and the impact of winds is acceptable, as the platform deviates 1.3 degrees from the equilibrium state under the test wind speed. Eventually, the effect of irregular waves on the HFS is presented with the critical parameters of mooring tension and pitch motion. The results show that the HFS has a good motion performance.Xiaobin QuYingxue YaoJianjun DuMDPI AGarticlehybrid floating systemcomprehensive utilizationmodular designbuoyancy-distributed floating foundationTechnologyTENEnergies, Vol 14, Iss 7605, p 7605 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hybrid floating system comprehensive utilization modular design buoyancy-distributed floating foundation Technology T
spellingShingle	hybrid floating system comprehensive utilization modular design buoyancy-distributed floating foundation Technology T Xiaobin Qu Yingxue Yao Jianjun Du Conceptual Design and Hydrodynamic Performance of a Modular Hybrid Floating Foundation
description	The comprehensive utilization of offshore renewable energies is an effective way to solve the intermittency and variability of power supply. This paper aims to present a hybrid floating system (HFS) based on a modular buoyancy-distributed floating foundation (BDFF) that can be equipped with a horizontal-axis wind turbine, solar panels, and wave energy converters (WEC). A simplified test model with a Froude scale ratio of 1/10 is employed to perform the experiments in a deep-water basin to validate the numerical results computed from the code program ANSYS AQWA based on the potential flow theory. The Response Amplitude Operators (RAOs) under regular waves are compared to evaluate the hydrodynamic performance. There is a good agreement in the surge, pitch, and heave RAOs for experiments and the numerical simulation, with a maximum of 6.45 degrees per meter for the pitch motion. Furthermore, the mooring tensions in the time domain are analyzed under different wave conditions.The tension RAOs from simulations are slightly higher than those from measurements with a maximum value at the period of 3.416 s. The mooring line on the windward side has a more considerable mooring tension that is far less than the allowable tensile strength, especially under the wave height of 2 m and the wave period of 2.873 s. The influence of loaded weight representing solar panels is weak, and the impact of winds is acceptable, as the platform deviates 1.3 degrees from the equilibrium state under the test wind speed. Eventually, the effect of irregular waves on the HFS is presented with the critical parameters of mooring tension and pitch motion. The results show that the HFS has a good motion performance.
format	article
author	Xiaobin Qu Yingxue Yao Jianjun Du
author_facet	Xiaobin Qu Yingxue Yao Jianjun Du
author_sort	Xiaobin Qu
title	Conceptual Design and Hydrodynamic Performance of a Modular Hybrid Floating Foundation
title_short	Conceptual Design and Hydrodynamic Performance of a Modular Hybrid Floating Foundation
title_full	Conceptual Design and Hydrodynamic Performance of a Modular Hybrid Floating Foundation
title_fullStr	Conceptual Design and Hydrodynamic Performance of a Modular Hybrid Floating Foundation
title_full_unstemmed	Conceptual Design and Hydrodynamic Performance of a Modular Hybrid Floating Foundation
title_sort	conceptual design and hydrodynamic performance of a modular hybrid floating foundation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f94dbe194aad4d5b853dc88beafd59b0
work_keys_str_mv	AT xiaobinqu conceptualdesignandhydrodynamicperformanceofamodularhybridfloatingfoundation AT yingxueyao conceptualdesignandhydrodynamicperformanceofamodularhybridfloatingfoundation AT jianjundu conceptualdesignandhydrodynamicperformanceofamodularhybridfloatingfoundation
_version_	1718412385741438976

Conceptual Design and Hydrodynamic Performance of a Modular Hybrid Floating Foundation

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