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半橢圓型防波堤水動力特性的數值模擬

劉傳林 韓新宇 董勝

劉傳林, 韓新宇, 董勝. 半橢圓型防波堤水動力特性的數值模擬[J]. 工程力學, 2023, 40(10): 247-256. doi: 10.6052/j.issn.1000-4750.2022.01.0094
引用本文: 劉傳林, 韓新宇, 董勝. 半橢圓型防波堤水動力特性的數值模擬[J]. 工程力學, 2023, 40(10): 247-256. doi: 10.6052/j.issn.1000-4750.2022.01.0094
LIU Chuan-lin, HAN Xin-yu, DONG Sheng. NUMERICAL SIMULATION OF HYDRODYNAMIC CHARACTERISTICS OF SEMI-ELLIPTIC BREAKWATER[J]. Engineering Mechanics, 2023, 40(10): 247-256. doi: 10.6052/j.issn.1000-4750.2022.01.0094
Citation: LIU Chuan-lin, HAN Xin-yu, DONG Sheng. NUMERICAL SIMULATION OF HYDRODYNAMIC CHARACTERISTICS OF SEMI-ELLIPTIC BREAKWATER[J]. Engineering Mechanics, 2023, 40(10): 247-256. doi: 10.6052/j.issn.1000-4750.2022.01.0094

半橢圓型防波堤水動力特性的數值模擬

doi: 10.6052/j.issn.1000-4750.2022.01.0094
基金項目: 國家自然科學基金委員會-山東省人民政府聯合基金項目(U1706226)
詳細信息
    作者簡介:

    劉傳林(1996?),男,山東菏澤人,碩士生,主要從事海岸工程及其與海洋環境的相互作用研究(E-mail: liuchuanlin@stu.ouc.edu.cn)

    韓新宇(1994?),男,山東青島人,博士生,主要從事海岸工程及其與海洋環境的相互作用研究(E-mail: hanxinyu_ouc@163.com)

    通訊作者:

    董 勝(1968?),男,山東青島人,教授,博士,博導,主要從事海洋工程環境及其與結構相互作用研究(E-mail: dongsh@ouc.edu.cn)

  • 中圖分類號: O353

NUMERICAL SIMULATION OF HYDRODYNAMIC CHARACTERISTICS OF SEMI-ELLIPTIC BREAKWATER

  • 摘要: 該文提出了一種新型防波堤結構:半橢圓型防波堤。采用FLOW 3D建立數值波浪水槽,模擬了波浪與半橢圓型防波堤的相互作用,并通過物理模型試驗驗證了數值模型的合理性。結合數值模擬結果分析了波浪參數變化對半橢圓型防波堤水動力特性的影響,結果表明:反射系數隨著堤頂高程和水位之差hs與設計波高H的比值hs/H增大而增大,透射系數隨hs/H增大而減??;在本研究波浪周期范圍內,水深D不變時,半橢圓型防波堤對周期T較大的波浪的擋浪效果優于周期較小的工況。隨著D與半橢圓型防波堤立軸b的比值D/b的增大,擋浪效果變差。波浪力隨著hs/H的減小而增大,隨H與波長L的比值H/L的增大而減小。相同工況下,隨著半橢圓型防波堤臥軸a與立軸b的比值增大,結構所受水平波浪力減小,豎直波浪力增大,防波堤自重增大,防波堤穩定性增強。半橢圓型防波堤的優勢在于,其臥軸和立軸的大小關系可以根據不同的工程條件自行設計,若以橢圓長軸臥放,則比防范相同水深的半圓型防波堤更適用于軟弱基床,從而更加安全可靠;若以短半軸立放,則在防范相同水深的前提下,比半圓型防波堤節省材料,從而降低建造成本。
  • 圖  1  網格劃分圖

    Figure  1.  Meshing diagram

    圖  2  測點#3波高對比

    Figure  2.  Wave height comparison at measuring point no.3

    圖  3  測點#4波高對比

    Figure  3.  Wave height comparison at measuring point no.4

    圖  4  模型尺寸及測點布置 /m

    Figure  4.  Model size and measuring point arrangement

    圖  5  半橢圓型防波堤模型

    Figure  5.  Semi elliptic breakwater model

    圖  6  模型試驗布置示意圖 /m

    Figure  6.  Schematic diagram of model test layout

    圖  7  試驗結果與數模結果的波高對比

    Figure  7.  Comparison of wave height between experimental results and numerical simulation results

    圖  8  試驗結果與數模結果的波壓對比

    Figure  8.  Comparison of wave pressure between experimental results and numerical simulation results

    圖  9  模型1的透反射系數

    Figure  9.  Reflection coefficient and transmission coefficient of model1

    圖  10  模型1的水平波浪力和豎直波浪力

    Figure  10.  Horizontal wave force and vertical wave force of model 1

    圖  11  軸比變化時半橢圓型防波堤水動力分析

    Figure  11.  Hydrodynamic analysis of semi-elliptic breakwater with varying axial ratio

    表  1  網格劃分表

    Table  1.   Grid table

    方向外部block1內部block2
    X網格數3000網格數102
    最小網格尺寸0.0252最小網格尺寸0.0106
    最大網格尺寸0.0293最大網格尺寸0.0117
    相鄰網格最大比例1.163相鄰網格最大比例1.058
    Y網格數10網格數19
    最小網格尺寸0.02最小網格尺寸0.0105
    最大網格尺寸0.02最大網格尺寸0.0105
    相鄰網格最大比例1相鄰網格最大比例1
    Z網格數49網格數130
    最小網格尺寸0.02最小網格尺寸0.007
    最大網格尺寸0.025最大網格尺寸0.011
    相鄰網格最大比例1.25相鄰網格最大比例1.12
    X/Y最大網格比例1.465最大網格比例1.114
    Y/Z最大網格比例1.248最大網格比例1.391
    Z/X最大網格比例1.462最大網格比例1.549
    ?外部block網格數1 470 000內部block網格數251 940
    ?總網格數1 721 940
    下載: 導出CSV

    表  2  試驗工況

    Table  2.   Test conditions

    水深D/m堤頂超高hs/m波高H/m周期T/s
    0.45
    0.51
    0.57
    0.63
    0.20
    0.14
    0.08
    0.02
    0.04
    0.08
    0.12
    0.16
    0.20
    1.10
    1.46
    1.83
    2.19
    2.56
    2.92
    3.29
    下載: 導出CSV

    黑人大屌丝逼逼
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  • 收稿日期:  2022-01-20
  • 修回日期:  2022-06-14
  • 網絡出版日期:  2022-07-08
  • 刊出日期:  2023-10-10

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