The Research for the Interaction of Waves Propagating over a Double-Layer Composite Poroelastic Submerged Structure

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基本資料

Project title

Code/計畫編號

NSC101-2221-E019-072

Translated Name/計畫中文名

波浪通過雙層複合彈性透水潛式結構互相作用之研究

Project Coordinator/計畫主持人

Yuan-Jyh Lan

Funding Organization/主管機關

National Science and Technology Center for Disaster Reduction

Department/Unit

Department of Hydraulic and Ocean Engineering,NCKU

Website

https://www.grb.gov.tw/search/planDetail?id=2593829

Year

2012

Start date/計畫起

01-08-2012

Expected Completion/計畫迄

31-07-2013

Bugetid/研究經費

575千元

ResearchField/研究領域

海洋科學

本研究計畫擬針對波浪與雙層複合式彈性透水潛式結構互相作用之問題進行研究，以瞭解波浪受到雙層複合式潛式結構彈性變形與透水效應的影響下之波浪變化，以及波浪作用對結構物內部的影響。計畫將針對雙層複合式彈性透水潛式結構的三種基本型態－左右相鄰、上下相鄰與裡外雙層結構－分別以三年的時間進行研究。研究工作項目將分為理論解析與試驗研究兩部份。理論解析方面，波浪運動將採用線性波浪理論，單一層彈性透水結構則假設為均質、等向、具高透水性之彈性介質。本研究將研討適合之高滲透性彈性結構理論，並進一步以解析方法配合數值解陣求出解析解。數值解析模式建立完成後，將分析雙層複合式彈性透水潛式結構不同的彈性變形效應、透水效應改變的情形下，波浪反射與透過的變化，以及波浪作用對於結構物內部應力、流體壓力的影響。本研究並將利用PIV 量測系統，於二維波浪斷面水槽進行波浪通過雙層複合式彈性透水潛式結構之試驗研究，除與理論解析結果相互比較驗證以外，並將量測潛式結構附近波動流場變化。研究成果將可進一步瞭解波浪通過雙層複合式潛式透水結構互制作用之運動與動力機制。 In this study, the problem of periodic wave interaction with a double-layer composite poroelastic submerged structure is considered to be investigated. Three basic types of double-layer composite poro-elastic submerged structures – adjacent, upper and lower connecting and inner-outer layer structures – are studied in three years. The research project will be divided into theoretical analysis and experimental study. For theoretical analysis, water waves are described using the linear wave theory. Each of poroelastic structure is assumed to be homogeneous, isotropic, and can be elastic with high permeability. This study will discuss the appropriate theory for high permeability flexible structures, and further to solve the governing equations by using analytic method with the numerical matrix approach. Using the present analytic solution, effects of elasticity and permeability of the double-layer composite poroelastic submerged structure on wave reflection and transmission, as well as wave-induced stresses and pore pressure in structures, are studied. In addition, the experimental study will be conducted in a two-dimensional wave flume to survey the deformation of monochromatic waves as they propagate over a double-layer composite poroelastic submerged structure. The experimental results could be performed to verify the analytical results, and to investigate the flow field around the composite structure. The research will further understanding of the kinetic and dynamic mechanisms on the interaction of wave and a double-layer composite poro-elastic submerged structure.

Keyword(s)

波浪
彈性透水
雙層複合式潛式結構
互相作用
理論解析
模型試驗
waves
poroelasticity
a double-layer composite submerged structure
interaction
theoretical analysis
experiment

DSpace CRIS

The Research for the Interaction of Waves Propagating over a Double-Layer Composite Poroelastic Submerged Structure

基本資料

Description