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A Numerical Model for Mud Mass Transport in Coastal Environment

Research Project

Project/Area Number 03650417
Research Category

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

Allocation TypeSingle-year Grants
Research Field Hydraulic engineering
Research InstitutionYokohama National University

Principal Investigator

SHIBAYAMA Tomoya  Yokohama National University Department of Civil Engineering, Associate Professor, 工学部, 助教授 (40143391)

Co-Investigator(Kenkyū-buntansha) OKAYASU Akio  Yokohama National University Department of Civil Engineering, Research Associate, 工学部, 助手 (20213994)
SATO Shinji  Yokohama National University Department of Civil Engineering, Associate Professo, 工学部, 助教授 (90170753)
Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1992: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1991: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsMud / Mud Transport / Coastal Processes / 海浜変形 / 底質移動
Research Abstract

A theoretical and experimental investigation has been undertaken to clarify the interaction between wave-current and mud bed. The characteristics of this interaction are the high wave attenuation and the mud mass transport in the bed layer. Modeling this interaction is mainly based on the theologecal properties of mud.
Based on the recent progresses on the rheological measurements of mud, a model called the visco-elastic-plastic model is proposed. According to this model, the mud has two states. When the shear stress is less than or equal to the yield stress, the mud is in viscoelastic state, and when the shear stress is greater than the yield stress, the mud is in viscoplastic state. An experiment has been carried out by using an oscillatory type viscoelastic meter to investigate rheological parameters when mud is in the viscoelastic state. The results reveal that the viscosity and the elasticity modulus of mud depend on the water content of mud and the oscillatory period. The empirical formulas to express these dependents are then established.

Report

(3 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] An Ngoc Nguyen,柴山 知也,佐藤 慎司,岡安 章夫: "底泥の粘弾性特性の計測と数値モデルへの応用" 海岸工学論文集. 38. 471-475 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 柴山 知也,An Ngoc Nguyen: "底泥特性の周期依存性に着目したモデルとその検証" 海岸工学論文集. 39. 511-515 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Tomoya SHIBAYAMA,Pun Kwok Leung: "Multi-Level Model for Hydrodynamic Circulation and Dispersion Process in Bays" Coastal Engineering in Japan. 35-1. 49-66 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Tomoya Shibayama and Pun Kwok Leung: "Multi-Level Model for Hydrodynamic Circulation and Dispersion Process in Bays" Coastal Engineering in Japan,. Vol 35, No. 1. 49-66 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Tomoya Shibayama and An Ngoc Nguyen: "A visco-elastic-plastic modeling for wave-mud interaction" Coastal Engineering in Japan,. Vol. 36, No. 1. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] An Ngoc Nguyem,柴山 知也,佐藤 慎司,岡安 章夫: "底泥の粘弾性特性の計測と数値モデルへの応用" 海岸工学論文集. 38. 471-475 (1991)

    • Related Report
      1992 Annual Research Report
  • [Publications] 柴山 知也,An ngoc Nguyen: "底泥特性の周期依存性に着目したモデルとその検証" 海岸工学論文集. 39. 511-515 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Tomoya Shibayama,Pun Kwok Leung: "Multi-Level Model for Hydrodynamic Circulation and Dispersion Process in Bays" Coastal Engineering in Japan. 35-1. 49-66 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] A'n Ngoc Nguyen・柴山 知也,佐藤 慎司,岡安 章夫: "底泥の粘弾性特性の計測と数値モデルへの応用" 海岸工学論文集. 38ー(1). 471-475 (1991)

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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