摘要
对于研究泥沙问题的动床模型试验 ,模型沙的选择是模型设计的关键。模型沙的选择是指综合考虑所研究问题的性质、已知条件、模型几何比尺 ,以满足模型与原型的水沙运动相似为目的 ,选定、设计模型沙的材料、比重和粒径级配。作者主要阐述悬移质模型沙级配的模拟方法 ,并提出利用沙玉清公式计算、设计模型沙级配的另一种方法 ,以尽可能严格满足模型相似条件、克服老方法的不足和缺陷。
The selection of model sand is the key problem in the design of a mobile bed model test. To meet the similarity of flow and sediment movement in the model and prototype, it is necessary to comprehensively consider the character of interested problem, model geometric scale, and other related factors when selecting and designing the density and gradation of model sand. A new method to determine the size distribution of model sand is proposed based on Sha Yuqing's formula, which could partly avoid the shortcoming of previous methods.
出处
《泥沙研究》
CSCD
北大核心
2003年第1期75-79,共5页
Journal of Sediment Research
