Offshore floating flexible photovoltaic typhoon-induced flow field driving mechanism and wind load extreme value model

被引：0

作者：

Wang, Wencai ^{[1
]}

Ke, Shitang ^{[1
,2
]}

Yu, Wei ^{[2
]}

Zhang, Yujiang ^{[2
]}

Pan, Zhefeng ^{[3
]}

Zhu, Tingrui ^{[2
]}

Zhao, Xiuyong ^{[4
]}

机构：

[1] Department of Aerodynamics, Nanjing University of Aeronautics and Astronautics, Nanjing,210016, China

[2] Department of Civil and Airport Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing,211106, China

[3] Das Solar Co.Ltd., Quzhou,324000, China

[4] National Energy Group Science and Technology Research Institute Co.Ltd., Nanjing,210031, China

来源：

Wind and Structures, An International Journal | 2024年 / 39卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Coupled typhoon-wave-current simulation - Current simulation - Driving mechanism - Extreme value - Flexible photovoltaics - Flow field driving mechanism - Meso/small scale nesting - Offshore floating - Offshore floating flexible photovoltaic - Small scale - Typhoon wave - Value model - Wave current - Wind load - Wind load extreme value model;

D O I：

10.12989/was.2024.39.5.351

中图分类号：

学科分类号：

摘要：

Offshore floating photovoltaic (PV) is the technological commanding heights of the future development of the photovoltaic industry, especially under the action of extreme weather such as typhoons and huge waves, the flow field mechanism of offshore large-span floating flexible PV arrays is more complex, and there is a lack of effective offshore floating PV wind load prediction models in the relevant design codes of flexible PV in the world. Taking a typical flexible PV key demonstration project as the research object, a three-dimensional mesoscale Weather Research and Forecasting (WRF) - Simulating Waves Nearshore (SWAN) - Finite-Volume Coastal Ocean Model (FVCOM) real-time two-way coupling simulation method based on Mapped Contact Interface (MCT) coupler was proposed, a meso/small-scale nested typhoon-wave-flow numerical pool of PV array was established, the wind load distribution characteristics of single-row floating flexible PV were studied, the driving mechanism of inter-row flow field of floating large-span flexible PV array was compared and analyzed, and finally the value model of the lift/drag coefficient of PV array under extreme wind conditions was established. The results show that the average wind pressure of single-row floating flexible PV presents trapezoidal and L-shaped distribution rules under different wind direction angles, and the temporal instability and spatial discontinuity in the low wind speed area of the floating flexible PV array and the complex and disordered alternating vortex phenomenon are the main reasons for the inter-row interference, and the proposed fitting formula of two-dimensional lift/drag coefficient can encompass the extreme value of the actual wind pressure, and the maximum error is controlled within 10 %, which can provide a reference for the prediction of the design value of this kind of floating flexible PV wind load. © 2024 Techno-Press, Ltd.

引用

页码：351 / 365

共 2 条

[1] Multi-stage typhoon-induced wind effects on offshore wind turbines using a data-driven wind speed field model
Wang, H.
Ke, S. T.
Wang, T. G.
Kareem, A.
Hu, L.
Ge, Y. J.
RENEWABLE ENERGY, 2022, 188 : 765 - 777
[2] Wind field driving mechanism and extreme wind load model of a super-large cooling tower under downburst
Han G.
Ke S.
Yang J.
Li W.
Ren H.
Zhendong yu Chongji/Journal of Vibration and Shock, 2022, 41 (22): : 23 - 32

← 1 →