Cnoidal wave diffraction from a concentric cylindrical structure with arc-shaped porous outer thin walls

HUANG Kunhui; HUANG Hua; ZHAN Jiemin; CAI Hantao

doi:10.13471/j.cnki.acta.snus.2019B092

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Cnoidal wave diffraction from a concentric cylindrical structure with arc-shaped porous outer thin walls

Research articles | 更新时间：2023-11-01

- Cnoidal wave diffraction from a concentric cylindrical structure with arc-shaped porous outer thin walls
- Acta Scientiarum Naturalium Universitatis Sunyatseni Vol. 61, Issue 3, Pages: 123-131(2022)
- 作者机构：
  
  中山大学航天航空学院应用力学与工程系，广东广州 510275
- 作者简介：
- 基金信息：
- DOI：10.13471/j.cnki.acta.snus.2019B092
  CLC： TV139.2
- Published：25 May 2022，
  
  Published Online：19 July 2021，
  
  Received：23 September 2019，
  
  Accepted：12 November 2019
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黄坤辉,黄华,詹杰民等.椭圆余弦波对外圆弧透空薄壁双圆筒柱的绕射[J].中山大学学报(自然科学版),2022,61(03):123-131.

HUANG Kunhui,HUANG Hua,ZHAN Jiemin,et al.Cnoidal wave diffraction from a concentric cylindrical structure with arc-shaped porous outer thin walls[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2022,61(03):123-131.
黄坤辉,黄华,詹杰民等.椭圆余弦波对外圆弧透空薄壁双圆筒柱的绕射[J].中山大学学报(自然科学版),2022,61(03):123-131. DOI： 10.13471/j.cnki.acta.snus.2019B092.

HUANG Kunhui,HUANG Hua,ZHAN Jiemin,et al.Cnoidal wave diffraction from a concentric cylindrical structure with arc-shaped porous outer thin walls[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2022,61(03):123-131. DOI： 10.13471/j.cnki.acta.snus.2019B092.

摘要

依据椭圆余弦波一阶绕射理论，推导了浅水波对不同圆心角双层外圆弧透空薄壁内接圆柱绕射的波场解析解。通过对该结构的最大波浪力与最大波面实算，揭示了椭圆余弦波绕射的作用规律。结果表明：外层圆弧透空薄壁将大幅度减弱浅水波对内接圆柱的作用。波浪与海况条件、双外层薄壁和内圆柱的各类几何条件以及结构的透空系数等因素对椭圆余弦波作用均存在一定的影响。在一定浅水条件下，采用浅水波理论计算的最大波浪作用大于Airy微幅波理论对应结果；结构的实际最大波浪力将随着浅水波特征参数的增大而增大。

Abstract

Based on first order cnoidal wave diffraction theory， the wave field analytical solutions to shallow water wave diffraction by a inscribed circular cylinder with double-layered arc-shaped porous thin walls with different central angles are derived. By calculating the maximum wave forces on the structure and maximum diffracted wave surfaces，the cnoidal wave diffraction law has been revealed. The results demonstrate that the double arc-shaped outer thin wall can greatly reduce wave effects on inscribed circular cylinder and the variation of wave and sea water condition. Various geometry conditions of double outer thin wall and cylinder ， the porous coefficients of structure may have some influence on cnoidal wave effects. In certain shallow water conditions， the maximum wave effects from cnoidal wave theory are larger than those predicted by small amplitude wave theory. Practical maximum wave forces on structure will increase as the shallow water wave characteristic parameter value increases.

关键词

椭圆余弦波特征函数展开法绕射波面波浪力

Keywords

cnoidal waveeigenfunction expansion methoddiffractionwave surfacewave force

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Related Author

Kunhui HUANG

Hua HUANG

Jiemin ZHAN

Hantao CAI

LI Qi

HUANG Hua

ZHAN Jiemin

ZHANG Yaozhong

Related Institution

Department of Applied Mechanics and Engineering, Sun Yatsen University

School of Aeronautics and Astronautics， Sun Yat-sen University

School of Aeronautics and Astronautics，Sun Yat-sen University

．广东省海洋资源研究发展中心，广东广州 5102202．中山大学工学院应用力学与工程系//广东省近岸海洋工程重点实验室

Department of Applied Mechanics and Engineering,Sun Yatsen University

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