改进系列模型延伸法的原理及在海岸工程中的应用

Modified Extend Method of Series Models-Principle and Application in Coastal Hydraulics

本文对系列模型延伸法的改进主要有两点 :一是以无因次的综合参数取代单一的几何参数做自变量从而将常常用于河流动力学的系列模型延伸法推广到了海岸动力学的研究领域 ;二是用一个模型的不同实验结果进行延伸得到原体的主变量 ,从而可以减少工作量 ,节约投资。文章中对改进的系列模型延伸法中模型的设计原理及无因次综合参数的选取作了理论上的论证和探讨 ,并以海岸港口航道淤积、海上人工岛周围的局部冲刷、波浪作用下砂质海床和淤泥质海床上沉入式大圆筒的稳定性等为例 ,阐述了如何利用改进的系列模型延伸法解决海岸动力学领域中的各种研究课题。

In this paper the modified extend method of series models are mainly two points. The first, the unitary geometrical parameter which is the independent variable used often in river dynamics. So the extend method has disseminated into coastal dynamics research field. The second, it is possible to extend and obtain the main variable of the prototype, using various experimental results from one model. So the amount of test work could be decreased and the investment could be saved.The paper theoritically makes demonstration and investigation for design principle of model(s) in the modified extend method of series models and selection of dimensionless parameter. It is explained how to use the modified extend method of series models to solve various problems in coastal dynamics field, through navegation channel deposition of coastal harbour, local erosion around artificial island in the sea, stability of the large diameter cylinder sunken in sandy and muddy seabed .