中文版 | English
Title

Numerical study of higher-harmonic wave loads and runup on monopiles with and without ice-breaking cones based on a phase-inversion method

Author
Corresponding AuthorShi, Wei
Publication Years
2023
DOI
Source Title
ISSN
0029-8018
EISSN
1873-5258
Volume267
Abstract
Ice-breaking cones are commonly used in the design of marine structures in cold regions. This study investigates the effects of higher-harmonic wave loads and wave runup on a 5-MW offshore wind turbine with and without ice-breaking cones under extreme wave conditions on the Liaodong Peninsula in China. Two ice-breaking cones (upward-downward and inverted types) are considered. The numerical model adopts a two-phase flow by solving unsteady Reynolds-averaged Navier-Stokes (URANS) equations using the volume of fluid (VOF) method. A phase decomposition method through a 'Stokes-like' formulation was adopted to obtain the parameters for each har-monics. The presence of the conical part is seen to increase the second-harmonic wave loads by up to 40%, but it has only limited influence on the fourth and fifth harmonics. The upward-downward-type ice-breaking cone increases the third harmonic, while the inverted-type ice-breaking cone decreases the third harmonic. Due to the phase difference between the first-harmonic and higher harmonics, the largest wave runup occurs at 0 degrees, and 135 degrees is the location with the smallest wave runup. This is because at the 135-degree location, the linear component is positive but the other nonlinear components are negative. For the 0-degree location, all harmonics are positive. By contrast, the inverted type has little effect. The high harmonic wave runup of the minimum point is backwards compared with that of the monopile, and most nonlinear wave runups are different upstream of the monopile.
Keywords
URL[Source Record]
Indexed By
Language
English
Important Publications
ESI Highly Cited Papers
SUSTech Authorship
Others
Funding Project
[52071058] ; [51939002] ; [82233001]
WOS Research Area
Engineering ; Oceanography
WOS Subject
Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
WOS Accession No
WOS:000894805200003
Publisher
ESI Research Field
ENGINEERING
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:12
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/417104
DepartmentDepartment of Ocean Science and Engineering
Affiliation
1.Dalian Univ Technol, DeepWater Engn Res Ctr, State Key Lab Coastal & Offshore Engn, Dalian, Peoples R China
2.Ocean Univ China, Coll Engn, Qingdao, Peoples R China
3.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen, Peoples R China
4.Tech Univ Denmark, Dept Mech Engn, Lyngby, Denmark
5.Dalian Univ Technol, Inst Earthquake Engn, Fac Infrastruct Engn, Dalian, Peoples R China
Recommended Citation
GB/T 7714
Shi, Wei,Zeng, Xinmeng,Feng, Xingya,et al. Numerical study of higher-harmonic wave loads and runup on monopiles with and without ice-breaking cones based on a phase-inversion method[J]. OCEAN ENGINEERING,2023,267.
APA
Shi, Wei,Zeng, Xinmeng,Feng, Xingya,Shao, Yanlin,&Li, Xin.(2023).Numerical study of higher-harmonic wave loads and runup on monopiles with and without ice-breaking cones based on a phase-inversion method.OCEAN ENGINEERING,267.
MLA
Shi, Wei,et al."Numerical study of higher-harmonic wave loads and runup on monopiles with and without ice-breaking cones based on a phase-inversion method".OCEAN ENGINEERING 267(2023).
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