Large-Scale Particle Image Velocimetry for Estimating Vena-Contracta Width for Flow in Contracted Open Channels
نویسندگان
چکیده
منابع مشابه
Large-scale particle image velocimetry for measurements in riverine environments
[1] Large-scale particle image velocimetry (LSPIV) is a nonintrusive approach to measure velocities at the free surface of a water body. The raw LSPIV results are instantaneous water surface velocity fields, spanning flow areas up to hundreds of square meters. Measurements conducted in typical conditions in conjunction with appropriate selections of parameters for image processing resulted in m...
متن کاملVariational Optical Flow Estimation for Particle Image Velocimetry
We introduce a novel class of algorithms for evaluating PIV image pairs. The mathematical basis is a continuous variational formulation for globally estimating the optical flow vector fields over the whole image. This class of approaches has been known in the field of image processing and computer vision for more than two decades but apparently has not been applied to PIV image pairs so far. We...
متن کاملAdvanced Algorithms for Microscale Particle Image Velocimetry
The recent explosive increase in the use of uidic microelectromechanical systems (MEMS) has subsequently driven the development of uidic measurement techniques capable of measuring velocities at length scales small enough to be of use in characterizing and optimizing these new devices. Recently, several techniques have demonstrated spatial resolutions smaller than 1001mbut larger than 101m....
متن کاملZebrafish swimming in the flow: a particle image velocimetry study
Zebrafish is emerging as a species of choice for the study of a number of biomechanics problems, including balance development, schooling, and neuromuscular transmission. The precise quantification of the flow physics around swimming zebrafish is critical toward a mechanistic understanding of the complex swimming style of this fresh-water species. Although previous studies have elucidated the v...
متن کاملTowards capturing large scale coherent structures in boundary layers using particle image velocimetry
Here we describe the implementation of a large-scale multicamera particle image velocity (PIV) measurement to resolve the large range of spatial scales prevalent in moderate to high Reynolds number turbulent boundary layers. The objective of these experiments is to capture instantaneous snapshots of recently discovered large coherent structures which are known to inhabit the log and outer regio...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Water
سال: 2020
ISSN: 2073-4441
DOI: 10.3390/w13010031