系列模型延伸法在床面冲刷研究中的应用探讨

Study on extension method of series models in bed erosion prediction

针对用系列模型延伸法研究建筑物附近床面冲刷问题的方法,文章提出了2个新的观点。一是系列模型中的每个模型应该满足相关相似准则,二是反映模型系列的自变量可以是单一变量,也可以是多因素组成的参数。文章推导了系列模型的延伸方程、床面冲刷问题系列模型的延伸方程以及多因素自变量参数的系列模型延伸方程。文章认为,系列模型延伸法是用来减少模型的缩尺影响,以获得较为客观的研究结论,而不是用来研究主变量和自变量的关系。极限冲刷深度与相关因素之间的关系是比较复杂的,而不是单一的、简单的。

Aiming at comprehensive analysis of scour around a structure on seabed by extension method of seriesmodels, two new opinions were proposed in this paper. Firstly, each model of series models should satisfy the related similarity criteria. Secondly, the independent variable can be both single variable and multi-factor parameters. Extension equations of series models, extension equations of series models in bed erosion prediction and extension equations of series models with multi-factor parameters were derived. This paper eonsiders that this method is only used to reduee the influence of seale so as to obtain more objective conclusions, but not to analyze the relationship between principal variables and independent variables. The relation between utmost bed erosion value and its related factors is quite complex