Study on roughness coefficient for unsubmerged reed in the Changjiang Estuary

作     者：GU Fengfeng MU Lin QI Dingman LI Junhua KONG Lingshuang WAN Yuanyang GU Fengfeng 1,MU Lin 2,QI Dingman 1,LI Junhua 3,KONG Lingshuang 1,WAN Yuanyang 1 1 Shanghai Estuary and Coastal Science Research Center,Shanghai 201201,China 2 National Marine Data and Information Service,State Oceanic Administration,Tianjin 300171,China 3 College of Ocean Environment and Engineering,Shanghai Maritime University,Shanghai 200135,China

作者机构：Shanghai Estuary and Coastal Science Research Center Shanghai 201201 China National Marine Data and Information Service State Oceanic Administration Tianjin 300171 China College of Ocean Environment and Engineering Shanghai Maritime University Shanghai 200135 China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2011年第30卷第5期

页      面：108-113页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 0908[农学-水产] 07[理学] 0707[理学-海洋科学] 080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：The Public Science and Technology Research Funds Projects of Ocean under contract Nos 200905001 and 201005019 UNESCO-IHE Partnership Research Fund (UPaRF) under contract No.60038881 the National Natural Science Foundation of China under contract No.50939003 

主　　题：Manning's coefficient foliage density flexibility reed 

摘      要：The influence of density,foliage and stem flexibility on the roughness coefficients under unsubmerged conditions,such as Manning＇s n,is investigated *** instrumentation system has been developed for measuring the flow rate ranging from 0.1 to 0.3 L/s under the condition of different artificial foliated *** on the experimental results,the influence on the relationship between n with different density,foliage,flexibility and flow depth is *** is found that the foliage and the density are the important factors affecting Manning＇s *** a range of relatively low velocity and relatively large bending stiffness of stem,Manning＇s n is not influenced significanthy by the flexibility of stem.