Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Advances in Water Science》 2011-01
Add to Favorite Get Latest Update

Bias error induced by concentration gradients in the measurement of sediment-laden flows

SHI Jian,GUO Bo,GONG Fu-yuan,HE Xiao-gang,LI Dan-xun(State Key Laboratory of Hydroscience and Engineering,Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,China)  
The presence of concentration gradients shifts the effective location of the reported mean velocity away from the sampling bin's center in sediment-laden flow measurement with particle tracking velocimetry.Under typical velocity and concentration profiles for open channel flows,the bias error proves to be constantly less than zero,leading to an underestimate of the actual velocity.The error is closely related to three variables which are the relative location of the flow,the size of the sampling bin,and the suspension index of the sediment particles.Numerical analysis shows that the magnitude of the error follows a first-decrease-then-increase pattern from the bottom to the water surface along the vertical.
【Fund】: 国家自然科学基金资助项目(50779023);; 清华大学SRT资助项目(082T0019)~~
【CateGory Index】: TV149.3
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
【Citations】
Chinese Journal Full-text Database 3 Hits
1 LI Dan-xun, WANG Xing-kui, YU Ming-zhong (Key Laboratory for Water and Sediment Sciences, Tsinghua University, Beijing 100084, China);Experimental study on velocity fluctuations of suspended particles[J];Advances In Water Science;2002-02
2 ZHOU Jia-yu1, CHEN Li2, YE Xiao-yun3, WU Men-wu2, HUANG Rong-min2 (1.Chongqing Communication University, Southwestern Hydrautic Engineering Research Institute for Waterway, Chongqing400016, China; 2.State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan430072, China; 3.Survey the Planning and Design Research Institute of the Yangtze River Conservancy Committee, Wuhan430010, China);Experimental study on effect of sediment on velocity distribution in sediment-laden flow[J];Advances In Water Science;2005-04
3 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);Velocity profile of open-channel flows in the transitional roughness region on mobile beds[J];Advances in Water Science;2006-01
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 YANG Xianxiang; XU Xingjian; YU Chuan hun(Hubei Institute of Schiatosomiasis Control Wuhan 430070)PAN Qingshang; ZHANG Wei; XIONG Zhengan(Science Institute of the Yangtze River);EXPERIMENTAL STUDY ON SNAIL AND ITS EGG DROPPING MOVEMENT IN STABLE WATER[J];CHINESE JOURNAL OF ZOOLOGY;1994-06
2 MA Ainai (The Institute of Remote Sensing and GIS,Peking University,Beijing,100871);Remote Sensing Information Model and Geographic Mathematics[J];Acta Scicentiarum Naturalum Universitis Pekinesis;2001-04
3 LIN Guanming YE Wenhu (Department of Environmental Sciences,State Joint Key Lab of Environmental Simulation and Pollution Control,Peking University,Beijing,100871);Wavelet Analysis of Turbulent Signal in the Lee of Windbreak[J];Acta Scicentiarum Naturalum Universitis Pekinesis;2003-05
4 Xie Xiuqi;Shen Shouchang. Journal of Beijing Forestry University (2000)22(3)76~80[Ch,7 ref.] Southwest Research Institute of Academy of Railway Sciences, Chengdu 610031, P. R. China.;A new calculation method for debris flow based on transport density of gully bed.[J];JOURNAL OF BEIJING FORESTRY UNIVERSITY;2000-03
5 Wang Lixian;Wu Changwen(College of Soil and Water Conservation,BFU);Study on the M6chanism of Soil Conservation Effect of Forested Hillslope[J];JOURNAL OF BEIJING FORESTRY UNIVERSITY;1994-04
6 Wang Yujie Xie Mingshu Zhang Hongjiang (College of Soil and Water Conservation, Beijing For. Univ., 100083,P.R.China) Chang Shuping (The Forestry Department of Shanxi Province,Taiyuan,030000,P.R.China);On Relatively Balance Gradient on Granite Mountain Slopes of Upper and Middle Reaches of the Yangtze River[J];JOURNAL OF BEIJING FORESTRY UNIVERSITY;1998-06
7 HUANG Shu-you, et al.(Dept.of Hydraulic Engineering,ChangchunInstituteof Technology,Changchun 130012,China);Experimental study on dredging in tailrace of Xin'anjiang hydropower station[J];Journal of Changchun Institute of Technology;2004-04
8 Lu Jinyou;Study on the Lateral Distribution in Cross-Section of Reservoir Sedimentation[J];Journal of Yangtze River Scientific Research Institute;1988-01
9 Zhang Zhitang, Yao Yuli;Research on Starting Velocity of the Bed Gravel in Upper Yangtze River[J];Journal of Yangtze River Scientific Research Institute;1989-02
10 Zhang Wei, Xiong Zheng'an;An Experimental Study on Settling Vel6city for Plastic Materials in Still Water[J];Journal of Yangtze River Scientific Research Institute;1991-04
China Proceedings of conference Full-text Database 9 Hits
1 ZHU Bing-quan HUANG Guo-fu (Shanghai Branch,China Ship Scientific Research Center,Shanghai 200011);Hydraulic model tests on improving sedimentation efficiency of a horizontal-flow sand basin[A];[C];2008
2 Zhou Jie Wu Shiqiang Han Changhai Wu Xiufeng (Nanjing Hydraulic Research Institute State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing,210029);Analysis of sediment deposition characters in small reservoirs in mountainous district[A];[C];2007
3 YING Qiang ZHANG Xing-nong CHEN Zhang-ying ZHANG Si-he (Nanjing Hydraulic Research Institute,Nanjing 210029,China);Discussion of block losing stability acted by surge[A];[C];2007
4 ZHU Yu-liang,MA Jing (Key Laboratory of Coastal Disaster and Defence(Hohai University),Ministry of Education,210098,;Study of Turbulent Wave Boundary Layer[A];[C];2009
5 WANG Dao-zeng,FAN Jing-yu,ZHONG Bao-chang (Shanghai Institute of Applied Mathematics and Mechanics,Shanghai University,Shanghai 200072,;Study on the settling rate of suspended sediments for the Chenhang Reservoir in the Yangtze Estuary[A];[C];2009
6 YU Yu-zhen,XIE Li-quan,SUN Xun (State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China);Analysis of scour deformation of riverbank subjected to seepage force[A];[C];2007
7 WANG Dong-Mei~1,CHENG He-Qin~1,ZHOU Feng-Nian~2 (1.State Key Laborary of Estuarine and Coastal Research,East China Normal University,Shanghai. 200062;2.Changjiang Estuary Bureau of Hydrology and Water Resources Survey,Changjiang Water Resources Commission,Shanghai,200136);Local Scour Depth Estimation to the Nearshore Covered Sand Waves Areas[A];[C];2009
8 ZHAO Zhizhou, ZHOU Huajun (Chongqing Jiaotong University, Chongqing, 400074, China);Regulation Measures and Effect Analysis for the Pebble Shoals of Branching Reach with Bend Shoal in Upper course of Yangtze River[A];[C];2009
9 ZHOU Yuan~(1,2),GAO Yufeng~(1,2),TAO Hui~(1,2),CHAI Yongjin~(1,2) (1.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University,Nanjing,Jiangsu 210098,China;2.Geotechnical Research Institute,Hohai University,Nanjing,Jiangsu 210098,China);DRAINAGE-PROMOTION EFFECT OF AERATION VACUUM RAPID MUD-WATER SEPARATING TECHNIQUE ON DREDGED SLUDGE[A];[C];2010
【Secondary Citations】
Chinese Journal Full-text Database 10 Hits
1 Zhou Guoqing(Dept.of Computer Science,Tsinghua Univ.,Beijing 100084)Yuan Baozong;Tang Xiaofang(Institute of Information Science,Northern Jiaotong Univ.,Beijing 100044);The Intrinsic and extrinsic Factor of CCD Calibration:Distortion Model and Signal to Noise Ratio[J];ACTA ELECTRONICA SINICA;1996-11
2 Chen Tian-xiang (Chengdu Branch, Academia Sinica);THE FIELD EQUATIONS OF MULTIPHASE FLOW AND AVERAGED EQUATIONS[J];Advances In Mechanics;1986-04
3 Liu Dayou(Institute of Mechanics, Academia Sinica);SET UP THE EQUATIONS FOR TOW-PHASE FLOWS BY THE METHOD OF KINETIC THEORY[J];Acta Mechanica Sinica;1987-03
4 Shao Xuejun Xia Zhenhuan(Department of Hydraulic Engineering, Tsinghua University);THE DISTRIBUTION OF SOLID PARTICLES SUSPENDED IN A TURBULENT FLOW: A STOCHASTIC APPROACH[J];Acta Mechanica Sinica;1991-01
5 Liu Dayou Wang Boyi(Institute of Mechanics, Academia Sinica, Beijing 100080);THE BASIC EQUATIONS FOR SUSPENSION FLOWS DERIVED THROUGH A NEW METHOD[J];Acta Mechanica Sinica;1992-01
6 Lu Zhanmin Liu Qingquan Liu Dayou Yangxiuzhi (Institute of Mechanics, Academia Sinica, Beijing 100080, China);THE BEHAVIOR AND CRITERION OF TURBULENCE SUPPRESSION EFFECT OF THE PARTICLES IN A HORIZONTAL LIQUID SOLID FLOW[J];ACTA MECHANICA SINICA;1996-03
7 Li Futian(East China Technical University of Water Resources);The Turbulent Structure of Channel Flow with Suspended Sediment[J];Journal of Sediment Research;1986-01
8 Ni Jinren Hui Yujia (Tsinghua University);The Relation Between the Velocity Distribution and the Suspended Concentration Distribution[J];Journal of Sediment Research;1988-02
9 LI Dan\|xun, WANG Xing\|kui, WANG Dian\|chang (Tsinghua University, Beijing 100084);Effect of Velocity Gradient on the Turbulent Intensity of Suspended Particles[J];JOURNAL OF SEDIMENT RESEARCH;2000-03
10 Wang Xingkui\ Pang Dongming\ Wang Guixian\ An Fengling (Dept. Hydraulic Engineering, Tsinghua University);Application of image processing technics to velocity field measurement in physical model[J];JOURNAL OF SEDIMENT RESEARCH;1996-04
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved