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Numerical analysis of seepage field of bucket foundations for offshore wind turbines

机译:海上风机叶片基础渗流场的数值分析

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摘要

As an alternative supporting structure for wind turbines, bucket foundations (BF) have been widely applied to offshore wind farm projects. Considering the importance of installation phase which is supposed to be stable in design, detailed analysis should be conducted for each new site. The penetration (installation) process is closely related to the seepage flow forming around the bucket foundation and the seepage problems of the composite bucket foundation with multiple subdivisions (CMBF) is seldomly studied including the seepage differences between BF and CMBF. In this paper, based on the three-dimensional heat conduction law, numerical simulations are conducted for BF and CMBF from the dimensional effect and various working conditions perspectives. The results indicate that the seepage distribution patterns are different for the multiple subdivisions; higher tilt angle and smaller length-diameter-ratio lead to bigger hydraulic gradient; and the diameter of mid-compartment has a slight impact on the BFs compared with the length-diameter-ratios.
机译:作为风力涡轮机的替代支撑结构,桶形基础(BF)已广泛应用于海上风电场项目。考虑到应该在设计中保持稳定的安装阶段的重要性,应该对每个新站点进行详细分析。渗透(安装)过程与桶基础周围的渗流形成密切相关,很少研究具有多个细分的复合桶基础(CMBF)的渗流问题,包括BF和CMBF之间的渗流差异。本文基于三维热传导规律,从尺寸效应和各种工况的角度对高炉和CMBF进行了数值模拟。结果表明,多个分区的渗流分布模式不同。较大的倾斜角和较小的长径比导致较大的水力梯度。中隔室的直径对高炉的影响比长径比大。

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  • 来源
    《Ships and offshore structures》 |2018年第8期|822-834|共13页
  • 作者单位

    State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, China,School of Civil Engineering, Tianjin University, Tianjin, China;

    State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, China,School of Civil Engineering, Tianjin University, Tianjin, China;

    State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, China,School of Civil Engineering, Tianjin University, Tianjin, China;

    State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, China,School of Civil Engineering, Tianjin University, Tianjin, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bucket foundation (BF); composite bucket foundation with multiple subdivisions (CMBF); seepage field; dimensional effect; offshore wind;

    机译:铲斗基础(BF);具有多个细分的复合桶基础(CMBF);渗流场尺寸效应;离岸风;

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