A Numerical Model for Mud Mass Transport in Coastal Environment

沿海环境中泥浆运移的数值模型

• 批准号: 03650417
• 负责人: SHIBAYAMA Tomoya
• 金额: $ 1.22万
• 依托单位: Yokohama National University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03650417/
• 关键词: Mud; Mud Transport; Coastal Processes; 海浜変形; 底質移動

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.

本文从理论和实验两方面研究了波流与泥床的相互作用。这种相互作用的特点是波浪的高衰减和床层中的泥浆质量输送。这种相互作用主要是根据泥浆的流变特性来模拟的，根据泥浆流变测量的最新进展，提出了一种粘弹塑性模型。根据这个模型，泥浆有两种状态。当剪应力小于或等于屈服应力时，泥浆处于粘弹状态，当剪应力大于屈服应力时，泥浆处于粘塑性状态。利用振荡式粘弹仪对泥浆在粘弹状态下的流变参数进行了实验研究。结果表明，泥浆的粘度和弹性模量与泥浆的含水量和振荡周期有关。然后建立了表达这些依赖项的经验公式。

项目成果

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)

Tomoya SHIBAYAMA、Pun Kwok Leung：“海湾水动力循环和扩散过程的多级模型”日本海岸工程。

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)

Tomoya Shibayama，An Ngoc Nguyen：“关注底部泥浆特性的周期依赖性的模型及其验证”海岸工程杂志 39. 511-515 (1992)。

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)

An Ngoc Nguyen、Tomoya Shibayama、Shinji Sato、Akio Gangasu：“底部泥浆粘弹性特性的测量及其在数值模型中的应用”海岸工程杂志 38. 471-475 (1991)。

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)

An Ngoc Nguyem、Tomoya Shibayama、Shinji Sato、Akio Gangasu：“底部泥浆粘弹性特性的测量及其在数值模型中的应用”海岸工程杂志 38. 471-475 (1991)。

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)

An Ngoc Nguyen、Tomoya Shibayama、Shinji Sato、Akio Okasu：“底部泥浆粘弹性特性的测量及其在数值模型中的应用”，海岸工程杂志 38-(1) 471-475 (1991)。