ハイブリッド法を用いた有限水深域内の没水平板周辺の3次元波動場に関する計算 Calculation of Wave Deformations around Submerged Plates in Finite Water Depths by Solving Linearized Three-Dimensional Wave Diffraction Problems Using the Hybrid Method

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Abstract

蓄養殖施設を設置するための静穏域を造成する波浪制御構造物として没水平板構造物に注目し、その波浪制御機能の有効性について検討を加えた。対象とする平板の形状は短形とし、その大きさ、設置条件、入射波条件を変化させた。構造物周辺の波浪変形をハイブリッド法を適用して3次元線形ディフラクション問題を解くことによって算出し、比較検討した。計算の結果、平板の背後に帯状の波高域が形成された。平板の幅および没水深を水深のそれぞれ2倍以上、30%以浅、また平板傾斜角を30℃以上とることによってH/Hi≦0.6(H:計算点での波高、Hi:入射波高)の領域が増大することが示唆された。

It has been suggested that aquacultural facilities should be set up in open sea areas because of decreasingfishing grounds in calm bays. n these areas it is necessary to construct wave control structures so that aquaculturalfacilities, e.g. net cages, are not carried away.In this study wave deformations around a submerged plate as wave controI structures are estimated by solvinglinearized three-dimensional wave diffraction problems using the hybrid method. In some cases, the plate size,plate set up condition and incident wave condition are changed.Our calculation results show that low wave height areas are fomed into belt-shapes from a side of the plate.However, When kh≦1.0 or w/h≦1.0 (k is the wave number, h is the water depth and w is the width of the plate),it is not expected that the wave could be controlled by the submerged plate. It is shown that the low wave heightarea of H/Hi≦0.6 (H and Hi are the wave height at a calculated point and the incident wave height, respectively)is larger when w/h≧2.0, d/h≦0.3 and the sloping angle of the plate≧30 (d is the depth of the plate).

Journal

  • Journal of Fisheries Engineering

    Journal of Fisheries Engineering 34(1), 23-32, 1997-08-28

    The Japanese Society of Fisheries Engineering

References:  12

Cited by:  2

Codes

  • NII Article ID (NAID)
    10008274469
  • NII NACSIS-CAT ID (NCID)
    AN10278554
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    09167617
  • NDL Article ID
    4381841
  • NDL Source Classification
    ZR26(科学技術--農林水産--水産)
  • NDL Call No.
    Z18-1327
  • Data Source
    CJP  CJPref  NDL  J-STAGE  JASI 
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