EXPERIMENTAL INVESTIGATION OF HYDRODYNAMIC CHARACTERISTICS OF OVERLAND FLOW WITH GEOCELL  

作　　者：WANG Guang-yue LIU Yong-hui WANG Xin-hua 

机构地区：[1]School of Civil Engineering, Shandong University, Jinan 250061, China [2]School of Automotive Engineering, Shandong Jiaotong University, Jinan 250023, China

出　　处：《Journal of Hydrodynamics》2012年第5期737-743,共7页水动力学研究与进展B辑（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.11072133)

摘　　要：The hydrodynamic characteristics of the overland flow with a geocell slope are different from those of traditional flows because of its special structure. In this paper, a hydraulic flume with different slope gradients is used to study the hydrodynamic characteristics of the overland flow with geocell. The differences of flow characteristics between the overland flow with the geocell slope and the traditional flows are studied, and the hydrodynamic characteristics are obtained, including the flow pattern, the flow velocity and the hydraulic friction factor for the slope flow with geocell under different flow rates and slope gradients. The results show that there is a positive power function relationship between the rill depth of the slope surface （h） and the drag coefficient of the Darcy Weisbach （f）. There is a positive logarithmic function relationship between the drag coefficient f and the Reynolds number Red, and there is a negative power function relationship between the drag coefficient f and the Froude number Fr.The hydrodynamic characteristics of the overland flow with a geocell slope are different from those of traditional flows because of its special structure. In this paper, a hydraulic flume with different slope gradients is used to study the hydrodynamic characteristics of the overland flow with geocell. The differences of flow characteristics between the overland flow with the geocell slope and the traditional flows are studied, and the hydrodynamic characteristics are obtained, including the flow pattern, the flow velocity and the hydraulic friction factor for the slope flow with geocell under different flow rates and slope gradients. The results show that there is a positive power function relationship between the rill depth of the slope surface （h） and the drag coefficient of the Darcy Weisbach （f）. There is a positive logarithmic function relationship between the drag coefficient f and the Reynolds number Red, and there is a negative power function relationship between the drag coefficient f and the Froude number Fr.

关 键 词：GEOCELL overland flow hydrodynamic characteristics preferential flow 

分 类 号：TV131.2[水利工程—水力学及河流动力学] U213.15[交通运输工程—道路与铁道工程]