PTV

作品数：194被引量：478H指数：11
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BIAS ERRORS INDUCED BY CONCENTRATION GRADIENT IN SEDIMENT-LADEN FLOW MEASUREMENT WITH PTV被引量：1
《Journal of Hydrodynamics》2012年第5期668-674,共7页LI Dan-xun LIN Qiu-sheng ZHONG Qiang WANG Xing-kui 
supported by the National Natural Science Foundation of China(Grant No.50779023)
Sediment-laden flow measurement with Particle Tracking Velocimetry （PTV） introduces a series of finite-sized sampling bins along the vertical of the flow. Instantaneous velocities are collected at each bin and a sig...
关键词：bias error VELOCITY CONCENTRATION GRADIENT 
QUADRANT ANALYSIS OF BUBBLE INDUCED VELOCITY FLUCTUATIONS IN A TRANSITIONAL BOUNDARY LAYER被引量：6
《Journal of Hydrodynamics》2009年第1期93-99,共7页HUANG Jian MURAI Yuichi YAMAMOTO Fujio 
Our previous study showed that the frictional drag decreases with increasing void fraction at Re〉1300, while it increases at Re 〈 1000. Decomposition of the Reynolds shear stress also implied that bubbles induce iso...
关键词：bubbly channel flow Particle Tracking Velocimetry （PTV） quadrant analysis velocity fluctuation boundary layer laminar-to-turbulent transition 
AN IMPROVED PTV SYSTEM FOR LARGE-SCALE PHYSICAL RIVER MODEL被引量：10
《Journal of Hydrodynamics》2008年第6期669-678,共10页TANG Hong-wu CHEN Cheng CHEN Hong HUANG Jian-tong 
Project supported by the National Natural Science Foundation of China (Grant Nos. 50479068, 50779014);the Technological Innovation Project of Graduate students in Jiangsu Province (Grant No.1306014);the Project of "Six Talent Peak" of Jiangsu Province (Grant No. 07-A-006).
To measure the surface flow in a physical river model, an improved system of Large-Scale Particle Tracking Velocimetry （LSPTV） was proposed and the elements of the PTV system were described. Usually the tracer parti...
关键词：Large-Scale Particle Tracking Velocimetry （LSPTV） PARTICLE 3-frame PTV physical fiver model 
EXPERIMENT STUDY ON SEDIMENT INCIPIENCE IN BACKWARD-FACING STEP FLOW被引量：3
《Journal of Hydrodynamics》2007年第2期173-179,共7页LIU Chun-rong Huhe Aode TAO Long-bin 
Project supported by the National Natural Science Foundation of China(Grant No.10602017).
Flow over a backward-facing step was studied to investigate the effect of large-scale vortex structures on sediment incipience. The transient flow velocity field at the downstream of the backward-facing step was obtai...
关键词：backward-facing step flow coherent structure sediment incipience Particle Tracking Velocimetry （PTV） 
MEASUREMENT OF BUBBLE-BUBBLE INTERACTION DEPENDED ON REYNOLDS NUMBER USING STEREOSCOPIC BUBBLE-TRACKING TECHNIQUE被引量：1
《Journal of Hydrodynamics》2005年第2期243-251,共9页QUJian-wu MURAlYuichi YAMAMOTOFujio 
This work was supported as Grant In Aid Research by the Japanese Ministry ofEducation; Science and Culture (GrantNos: CN15560135 and CN15760104)
Bubble-bubble interaction in free rising bubbly flows is experimentally investigated in the present study. The velocity vectors of the bubbles are measured by a stereoscopic bubble-tracking technique and then the rela...
关键词：bubbly flow bubbly dynamics three-dimensional measurement PTV image processing 
LIQUID PHASE FLOW ESTIMATION IN GAS-LIQUID TWO-PHASE FLOW USING INVERSE ANALYSIS AND PARTICLE TRACKING VELOCIMETRY被引量：1
《Journal of Hydrodynamics》2004年第6期730-736,共7页CHENGWen MURAlYuichi SASAKIToshio YAMAMOTOFujio 
ProjectsupportedbytheNationalNaturalScienceFoundationofChina (GrantNo :5 0 0 790 2 2 )
An inverse analysis algorithm is proposed for estimating liquid phase flowfield from measurement data of bubble motion. This kind of technology will be applied in future forvarious estimation of fluid flow in rivers, ...
关键词：particle tracking velocimetry(PTV) multiphase flow inverse analysis post-processing algorithm carrier phase dispersed phases 
THE 3-D TURBULENT PTV BY USING TWO-MEDIA PHOTOGRAMMETRY
《Journal of Hydrodynamics》1994年第4期1-8,共8页Suo Jin Zhang Hong-min Wu Wen-zhou (Taiyuan University of Technology, Taiyuan, Shanxi, 030024, P. R. China) 
In this paper a more extensive application of 3-D PTV on visualization and reconstruction of turbulent flows has been developed: (1) the nonlinear Perspective transformation equations on two-media photogrammetry is us...
关键词：turbulent flow PTV two-media photogrammetry. 
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