• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

A Study on Stimulation of Tidal Exchange of a Closed Sea

Research Project

Project/Area Number 11450389
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field 海洋工学
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

KYOZUKA Yusaku  Faculty of Engineering Sciences, KYUSHU UNIVERSITY Prof., 大学院・総合理工学研究院, 教授 (80177948)

Co-Investigator(Kenkyū-buntansha) HAMADA Takaharu  Faculty of Engineering Sciences, KYUSHU UNIVERSITY Research Ass., 大学院・総合理工学研究院, 助手 (30294979)
ISOBE Atsuhiko  Faculty of Engineering Sciences, KYUSHU UNIVERSITY Ass.Prof., 大学院・総合理工学研究院, 助教授 (00281189)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥5,600,000 (Direct Cost: ¥5,600,000)
Fiscal Year 2000: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1999: ¥2,900,000 (Direct Cost: ¥2,900,000)
KeywordsTidal exchange / Average residence time / Water quality purification / Closed sea / Flow control / Particle tracking method / CFD / 海水交換 / 潮流
Research Abstract

Closed sea areas in Japan were classified into several groups by the closed index, which was defined by the ratio of the sea surface area to the cross-section area of the mouth of the closed sea. A local fishing port was considered for the realistic application of the stimulation of the tidal exchange of the closed sea area. A numerical simulation program was developed with the tracking particle method for the visualization of the flow and the preliminary calculations were conducted in a rectangular port. The remnant function was obtained by the number of the remaining particles in the port. The averaged residence time was calculated from the remnant function of the port in the studies of 1999.
A local fishing port in Seto inland sea was taken as an example of the closed sea area. Stimulation of the tidal exchange was examined by the introducing a opening in the breakwater which surrounds the port. The remnant function and the averaged residence time of the port were calculated for some positions of the opening in the breakwater. The particle tracking method is applied to simulate and visualize the flow inside the port using a number of imaginary particles. From those numerical results, the effects of the opening in the breakwater on the stimulation of the tidal exchange were confirmed. The determination method of an optimum position of the opening in the breakwater should be established in the future.
A similar method was applied to study about tidal exchange of the Hakata bay of Fukuoka city, where Wajiro tidal flat is located at the back of the bay and is valuable as a sanctuary for wild birds. We proposed the construction of a waterway through the sandbank from the outer sea to the inside of the bay. The flow in the waterway would be driven by the tide and be controlled to generate a one way current. These effects on the tidal exchanges were studied using numerical simulations.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Y.Kyozuka et al.: "Numerical Study on Stimulation of Tidal Exchange of Hakata Bay"Proc.of the 11^<th> Int.Offshore and Polar Eng.Conf.. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 経塚雄策: "ある漁港の海水交換の促進に関する研究"西部造船会会報. 100. 65-71 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Kyozuka et al: "Stimulation of Tidal Exchange of a Fishing Port"Techno-Ocean2000, Proceedings. II. 483-486 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.NAMBA et al.: "The Comparison between the Geostrophic Current Field and the Water Mass Distribution in the South China Sea"Engineering Sciences Reports, Kyushu University. 22・3. 315-321 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 経塚雄策: "閉鎖海域の海水交換促進に関する基礎的研究"西部造船会会報. 97. 77-85 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Kyozuka et al.: "On the stimulation of the tidal exchange of an enclosed coastal sea"Proc.of 9^<th> Int.Offshore and Polar Eng.Conf.ISOPE-99. I. 406-412 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Kyozuka: "Numerical Study on Stimulation of Tidal Exchange of Hakata Bay"Proc.of the 11^<th> Int.Offshore and Polar Eng.Conf.. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Kyozuka: "Stimulation of Tidal Exchange of a Fishing Port"The West-Japan Soc.of Naval Architects. No.100. 65-71 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Kyozuka: "Stimulation of Tidal Exchange of a Fishing Port"Techno-Ocean2000, Proceedings. Vol.-II. 483-486 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.NAMB: "The Comparison between the Geostrophic Current Field and the Water Mass Distribution in the South China Sea"Engineering Sciences Reports, Kyushu University. Vol.22, No.3. 315-321 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Kyozuka: "Fundamental Studies on the stimulation by the tidal exchange of closed sea"The West-Japan Soc.of Naval Architects. No.97. 77-85 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Kyozuka: "On the stimulation of the tidal exchange of an enclosed coastal sea"Proc.of 9^<th> Int.Offshore and Polar Eng.Conf., ISOPE-99, Brest, France. Vol.I. 406-412 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 経塚雄策 et al.: "ある漁港の海水交換の促進に関する研究"西部造船会会報. 100. 65-71 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Kyozuka et al.: "Stimulation of Tidal Exchange of a Fishing Port"Proceedings of Techno-Ocean 2000. 2. 483-486 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 経塚雄策: "閉鎖海域の海水交換促進に関する基礎的研究"西部造船会会報. 97号. 77-85 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y.Kyozuka: "On the simulation of the tidal ezchange of an enclosed coastal sea"Proc, of 9th International offshore and Polar Eng. Conf.,Brest, France. Vol. I. 406-412 (1999)

    • Related Report
      1999 Annual Research Report

URL: 

Published: 1999-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi