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海岛局部风场特性的风洞试验和数值模拟研究

郭健 胡成杰

郭健,胡成杰. 海岛局部风场特性的风洞试验和数值模拟研究[J]. 海洋学报,2022,44(3):98–108 doi: 10.12284/hyxb2022005
引用本文: 郭健,胡成杰. 海岛局部风场特性的风洞试验和数值模拟研究[J]. 海洋学报,2022,44(3):98–108 doi: 10.12284/hyxb2022005
Guo Jian,Hu Chengjie. Wind tunnel test and numerical simulation of partial wind field characteristics of islands[J]. Haiyang Xuebao,2022, 44(3):98–108 doi: 10.12284/hyxb2022005
Citation: Guo Jian,Hu Chengjie. Wind tunnel test and numerical simulation of partial wind field characteristics of islands[J]. Haiyang Xuebao,2022, 44(3):98–108 doi: 10.12284/hyxb2022005

海岛局部风场特性的风洞试验和数值模拟研究

doi: 10.12284/hyxb2022005
基金项目: 国家自然科学基金(52078461,U1709207,51578506);浙江省重点研发项目(2019C03098)。
详细信息
    作者简介:

    郭健(1973—),男,浙江省杭州市人,博士,教授,主要从事跨海工程智能监控及安全防护研究。E-mail:guoj@zjut.edu.cn

  • 中图分类号: TU312.1

Wind tunnel test and numerical simulation of partial wind field characteristics of islands

  • 摘要: 针对海岛局部风效应突出的问题,采用边界层风洞试验与数值模拟相结合的方法,对3种坡度的理想化海岛地形的风剖面进行了数值拟合,定义了差异系数来描述风剖面变化,利用数值模拟研究了差异系数和最大加速比在迎风侧的分布,重点探讨了海岛坡度和高度对最大加速比和差异系数的影响;基于风洞数据,对迎风侧和背风侧顺风向、横风向和竖向湍流强度和阵风因子分布进行了研究。结果表明:数值模拟与风洞试验结果较接近,风剖面指数在迎风侧较小;靠近坡顶的加速效应尤为明显,其最大加速比为0.4~1.0;坡腰处的差异系数较小,随着岛脊线角度的增加,差异系数为0的位置有向坡脚靠近的趋势;坡度增大到25°、0°岛脊线上最大加速比和差异系数均较大;迎风侧的三向湍流强度分布较规律,而背风侧的三向湍流强度分布较杂乱,尤其是在距海岛表面100 m高度范围内;阵风因子和湍流强度的变化趋势具有较高的一致性。
  • 图  1  宁波–舟山港的六横岛海域

    Fig.  1  Sea area of Liuheng Island in Ningbo-Zhoushan Port

    图  2  风洞试验示意

    Fig.  2  Schematic diagram of wind tunnel test

    图  3  风洞试验布置

    Fig.  3  Layout of wind tunnel test

    图  4  边界层平均风剖面及湍流度剖面

    Fig.  4  Mean wind and turbulence profiles of boundary layer

    图  5  计算域及网格划分示意图

    Fig.  5  Schematic diagram of computing domain and grid

    图  6  风剖面自保持性验证

    Fig.  6  Verification of wind profile self preservation

    图  7  水平向风速示意图

    Fig.  7  Schematic diagram of horizontal wind speed

    图  8  不同坡度海岛风洞试验平均风速分布

    Fig.  8  Average wind speed distribution of wind tunnel test on islands with different slopes

    图  9  不同坡度海岛风洞试验与数值模拟平均风速对比

    Fig.  9  Comparison of mean wind speed between wind tunnel test and numerical simulation on islands with different slopes

    图  10  典型位置风剖面指数(α

    Fig.  10  Wind profile index at typical location (α)

    图  11  岛脊线与定位点布置

    Fig.  11  Island ridge lines and points layout

    图  12  迎风侧最大加速比与差异系数分布

    Fig.  12  Maximum acceleration ratio and difference factor distribution on windward side

    图  13  不同坡度和高度的加速比及差异系数分布

    Fig.  13  Distribution of acceleration ratio and difference factor for different slopes and heights

    图  14  坡顶(A11)湍流强度和空风洞的湍流强度对比

    Fig.  14  Comparison of turbulence intensity between top of slope (A11) and air tunnel

    图  16  迎风侧和背风侧阵风因子分布

    Fig.  16  Gust factor distribution on windward and leeward sides

    图  15  迎风侧和背风侧湍流强度分布

    Fig.  15  Turbulence intensity distribution on windward and leeward sides

    表  1  海岛参数

    Tab.  1  Island parameters

    序号高度H/m底面直径D/m坡度(2H/D
    海岛海岛模型海岛海岛模型
    1100.000.20746.411.4915°
    2100.000.20428.900.8625°
    3100.000.20285.631735°
    下载: 导出CSV
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  • 收稿日期:  2020-12-14
  • 修回日期:  2021-04-17
  • 刊出日期:  2022-03-18

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