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1993 Fiscal Year Final Research Report Summary

Bidirectional Waves in Shallow Water and KP equation.

Research Project

Project/Area Number 04650469
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Hydraulic engineering
Research InstitutionCHUO UNIVERSITY

Principal Investigator

MIZUGUCHI Masaru  Chuo Univ.Scinece & Eng.Prof., 理工学部, 教授 (50011234)

Project Period (FY) 1992 – 1993
KeywordsBi-directional waves / KP equation / Muliti-directional wave maker
Research Abstract

A simple procedure to calculate weakly nonlinear bi-directional waves in shallow water is proposed. The procedure uses the analytical solution of KP equation given by Segur and Finkel(1985). The calculated bi-directional waves, for given waves with different incident angles, show nonlinear increase (or decrease)of the wave crest height, depending on the intersecting wave angle and their Ursell numbers.
Experiments are planned to check the validity of analytical results. However, waves generated by a multi-directional wave maker show large spatial variation of wave height. After theoretical investigation of the wave maker theory for the multi-directional wave maker, it is found that the spatial variation can be suppressed by properly controling the amplitude of wave paddle motion at both ends. Usefulness of this "end control method" is confirmed in the experiment.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 森屋陽一,水口優: "浅海域における弱非線形2方向波" 中大・理工・紀要. 35. 119-133 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 森屋陽一,水口優: "浅海域における弱非線形2方向波(Part2)" 中大・理工・紀要. 36. 39-50 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 水口優: "連続型多方向造波装置の造波理論と一様な波の場" 中大・理工・紀要. 36. 21-37 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 算田博章,水口優: "多方向造波装置において一様な波の場を造るための端部制御方式" 海岸理論文集. 41. 106-109 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Moriya M.and M.Mizuguchi: "Weakly nonlinear bi-directional waves in shallow water" Bull.Fac.Sci.& Eng., Chuo Univ.Vol.35(in Japanese). 119-133 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Moriya M.and M.Mizuguchi: "Weakly nonlinear bi-directional waves in shallow water(Part 2)" Bull.Fac.Sci.& Eng., Chuo Univ.Vol.36(in Japanese). 39-50 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mizuguchi, M.: "Wave maker theoy for continuous-type multi-directional wave maker and uniformity of wave field" Bull.Fac.Sci.& Eng., Chuo Univ.Vol.36(in Japanese). 21-37 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Toita H.and M.Mizuguchi: ""End control method"for uniform wave field by multi-directional wave maker" Proc.Japanese Conf.Coastal Eng.Vol.41(in Japanese). 106-109 (1994)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1996-04-15  

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