Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Advances in Water Science》 2006-01
Add to Favorite Get Latest Update

Velocity profile of open-channel flows in the transitional roughness region on mobile beds

LIU Chun-jing,LI Dan-xun,QU Zhao-song,WANG Xing-kui(Key Laboratory of Water & Sediment Sciences of Ministry of Education,Tsinghua University,Beijing 100084,China)  
The experiments on open-channel flows on the rough mobile bed in the transitional region are reported in this paper.The velocity in the flume were measured by a 2-D LDA,and the resistance coefficient were calculated with the Einstein′s resistance division method.The experimental results show that(1) The Karman constant in the Log-law of the open channel flows in the transition region is smaller than which that of the smooth open channel flows,and the integral parameter B does not coincide well with the Nikuradse′s result from the pipe flows;(2) The weak bed load in the flume may cause the drag-reducing effect;and(3) The Reynolds stress and the turbulence distribution are similar to those in the smooth open channel flows.
【Fund】: 国家自然科学基金资助项目(50279013 50221903)~~
【CateGory Index】: TV133
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
Chinese Journal Full-text Database 1 Hits
1 JING Xiang-feng1,2,LU Hong-xing1,2,ZHANG Kuan-di,LUO Tian-feng3(1.College of Water Resources and Architectural Engineering,Northwest Sci-Tech University of Agriculture and Forestry,Yangling,Shaanxi 712100,China;2.The State Key Laboratory of Soil Erosion and Dry Land Farming on the Loess Plateau,Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China;3.Institute of Water Resources of Gansu Province,Lanzhou,Gansu 730000,China);Experimental Study of Overland Flow Hydromechanics Under Different Degrees of Roughness[J];Bulletin of Soil and Water Conservation;2007-02
Chinese Journal Full-text Database 10 Hits
1 NIE Xiao-yan,LIU Yong-zhi,PENG Zeng-shou,DAI Zhi-yong,OU Zhong-hua(School of Optoelectronic Information,University of Electronic Science and Technology of China,Chengdu 610054,CHN);All-fiber Velocity Measurement System Based on Receiving Diffuse Reflection by Multiple Fibers[J];Semiconductor Optoelectronics;2006-01
2 ZHANG Bai shan\ L Zhi yong ZHU Li guo (Beijing University of Aeronautics and Astronautics, Dept. of Flight Vehicle Design and Applied Mechanics);Experimental Study on Flow Construction over Spur-Dikes[J];Journal of Beijing University of Aeronautics and Astronautics;2002-05
3 HE Wen xue 1,WEI En jia 2,LI Cha qing 1 (1.Dept.of Water Conservancy Engineering,Zheijiang Water Conservancy and Hydropower College, Hangzhou 310016,China;2.College of Water Resources and Architectural Engineering,Northwest Science and Technology;Analysis and comparison of calculating fomulas about resistance coefficient of open-channel flow[J];Journal of Yangtze River Scientific Research Institute;2002-02
4 HUANG Cai-an~1,GONG Min-fei~1,CHEN Zhi-Chang~2,QIAN Wen-kang~1(1.College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou 225009,China;2.Department of River and Harbor Engineering,Nanjing Hydraulic Research Institute,Nanjing 210024,China);Theoretical Study on Kaman Constant in Sediment-Laden Flow[J];Journal of Yangtze River Scientific Research Institute;2005-05
5 Hu Shixiong Jin Changxing (The Institute of Geography, Chinese Academy of Science, Beijing 100101);THE RECENT DEVELOPMENT OF THE STUDY ON OVERLAND FLOW AND HILLSLOPE PROCESSES[J];GEOGRAPHICAL RESEARCH;1998-03
6 WANG Xiao-hua 1 JU Shuo-hua 2 ZHU Wen-fang 1 (1 School of Municipal & Environmental Engineering,HIT;2 Institute of Architectural design.HIT);NUMERICAL SIMULATION OF FLOW AT SUDDEN EXPANSION[J];Low Temperature Architecture Technology;2003-01
7 Feng Wangcong Zheng Shiqin (School of Mechanical and Vehicle Engineering, Beijing Institute of Technology, Beijing 100081);The Development of Particle Image Velocimetry[J];Electronics Instrumentation Customer;2003-06
8 WANG Bing ZHANG Hui-Qiang WANG Xi-Lin GUO Yin-Cheng LIN Wen-Yi(Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China);LARGE EDDY SIMULATION OF BACKWARD-FACING STEP TURBULENT FLOW USING DIFFERENT SGS MODELS[J];Journal of Engineering Thermophysics;2003-01
9 LU Hong-xing~1, ZHOU Wei-bo~2, LIU Hai-jun~1(1.College of Water Conservancy and Architecture Engineering of Northwest Scienceand Technology University of Agriculture & Forestry, Yangling 712100, China;2.Chang'an University, Xian 710054, China);Hydraulic Characteristics and Hydraulic Calculation of U-shaped Channel[J];Journal of Irrigation and Drainage;2004-04
10 Ye Chunming(College of Systems Science and Engineering, ECUT)Wu Wenquan(College of Power Engineering, ECUT);Numerical simulation of vortex generation, separation and evolution for the flow past a circular cylinder[J];;1995-04
China Proceedings of conference Full-text Database 1 Hits
1 Xia Weisheng Li Tingwu Zhao Guan Zhang Qingwen Pian Yinhua ( College of National Land ,Hunan Normal University, Changsha Hunan Province 410081, 2.Institute of Soil and Water conservation, Chinese Academy of Science and Ministry of Water Resources, Yangling District, Shannxi Province 712100 PRC);Mathematical Model of Electrolyte Pulse Transferring in Sheet Flow[A];[C];2002
【Secondary References】
Chinese Journal Full-text Database 1 Hits
1 LUO Rongting1,ZHANG Guanghui1,2,CAO Ying1(1.School of Geography,Beijing Normal University,Beijing 100875,China;2.State Key Laboratory of Earth Surface Processes and Resource Ecology,Beijing Normal University,Beijing 100875,China);Progress in the Research of Hydrodynamic Characteristics of Sediment-laden Overland Flow[J];Progress in Geography;2009-04
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved