SOME NEW DATA AND FORMULAS FOR RESISTANCE FLOW IN FLUVIAL OPEN CHANNELS

作     者：YANG Sheng-fa HU Jiang LI Dan-xun WANG Xing-kui GUO Yakun YANG Sheng-fa, HU Jiang Department of River and Ocean, Chongqing Jiaotong University, Chongqing 400074, China, LI Dan-xun, WANG Xing-kui State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China GUO Yakun School of Engineering, University of Aberdeen, Aberdeen, AB24 3UE, UK

作者机构：Department of River and Ocean Chongqing Jiaotong University Chongqing 400074 China State Key Laboratory of Hydroscience and Engineering Tsinghua University Beijing 100084 China School of Engineering University of Aberdeen Aberdeen AB24 3UE UK 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2011年第23卷第4期

页      面：527-534页

核心收录：

学科分类：081505[工学-港口、海岸及近海工程] 082802[工学-农业水土工程] 08[工学] 09[农学] 0828[工学-农业工程] 0815[工学-水利工程] 0903[农学-农业资源与环境] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0701[理学-数学] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.50779082) the National Basic Research Program of China(973 Program,Grant No.2007CB407202) supported by the CSTC 2011 

主　　题：open channel flow flow resistance relative roughness steep gravel-bed flume experiments field measurements 

摘      要：Flow resistance in fluvial open channels, especially in steep gravel-bed channels, still presents challenges to researchers and engineers. This article presents some new data from both the flume experiments and field measurements. Data analysis using the divided hydraulic radius approach shows that the relative roughness plays a significant role in the bed form resistance. A new set of formulas that incorporate the relative roughness are proposed. As compared with several existing formulas, the proposed formulas can be used to better estimate the bed form resistance.