泥沙模型起动相似问题  

The Problem on Incipient Motion Simitarity of Sediment Model Design

作　　者：乐培九[1] 

机构地区：[1]天津水运工程科学研究所,塘沽300456

出　　处：《水道港口》1996年第1期1-6,共6页Journal of Waterway and Harbor

摘　　要：本文根据床沙起动流速和起动拖曳力公式,分别导出了泥沙起动问题相似比尺,结果表明两者完全一致、并指出,以往所得结果之所以不一致,是因为起动流速公式中包含了阻力因素,该因素是以泥沙粒径的函数形式出现,在公式导演过程中,忽视了其阻力意义,因而导致了错误的结果.Based on the formulas of incipient motion velocity and incipient motion drag force,the uniform result of scales of incipient motion similarity of sediment design is obtained in this paper. The antecedent result is non - uniform and incorrect , because of ignoring the meaning of the resistence in the formula of incipient motion velocity which appears in the form of function of sediment diameter.

关 键 词：模型 相似 变态 起动相似 泥沙模型 

分 类 号：TV142.1[水利工程—水力学及河流动力学]