Geometry and Dynamic Forces along an Inclined Hydraulic Jump over a Rough Channel Bed  

作　　者：D. Dimitriou John D. Demetriou 

机构地区：[1]JD Research Hydrolab, Athens 171 23, Greece

出　　处：《Journal of Civil Engineering and Architecture》2010年第11期26-32,共7页土木工程与建筑（英文版）

摘　　要：In this investigation, based on previous measurements, the geometry and dynamic forces along an inclined （angle φ, with 0^0 〈 qφ φ 8^0 ） hydraulic jump over a variation of rough and smooth channel beds, are examined and compared among them. The roughness is produced through transverse strips （of square cross section） covering the entire channel width and at various normal distributions along the channel. Froude numbers are varying up to 18.5 and conjugate depths＇ ratios up to 18.4. The water free surface profiles, the conjugate depths＇ ratios, the jumps＇ dimensionless lengths are examined and a prediction of exercised forces, in dimensionless terms, is also presented. The results and especially the latter force prediction may help the hydraulic and structural engineers when dealing with such hydraulic jumps.

关 键 词：Hydraulic jump rough beds. 

分 类 号：TV147[水利工程—水力学及河流动力学] TG84[金属学及工艺—公差测量技术]