Study on roughness coefficient for unsubmerged reed in the Changjiang Estuary

查看全文 作　　者：GU [1]Fengfeng;MU [2]Lin;QI [1]Dingman;LI [3]Junhua;KONG [1]Lingshuang;WAN [1]Yuanyang

机构地区：[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

出　　处：《Acta Oceanologica Sinica》索引2011年第30卷第5期,共6页

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 摘　　要：The influence of density,foliage and stem flexibility on the roughness coefficients under unsubmerged conditions,such as Manning's n,is investigated experimentally.An 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 reeds.Based on the experimental results,the influence on the relationship between n with different density,foliage,flexibility and flow depth is discussed.It is found that the foliage and the density are the important factors affecting Manning's n.At 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. 关键词：糙率系数芦苇长江口粗糙度系数抗弯刚度比仪表系统密度活性

相关文献

参考文献（17）
引证文献（6）
耦合文献（0）

参考文献(17)

引证文献(6)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Study on roughness coefficient for unsubmerged reed in the Changjiang Estuary

参考文献(17)

引证文献(6)

用户提示