Determination of Bed Shear Stress by Digital Particle Image Velocimetry in Turbulent Open Channel Flow

2000 ◽  
Author(s):  
James Robert Martin, Jr. ◽  
Laura J. Steinberg ◽  
Efstathios E. Michaelides
Keyword(s):  
Shear Stress ◽  
Particle Image Velocimetry ◽  
Channel Flow ◽  
Open Channel ◽  
Particle Image ◽  
Open Channel Flow ◽  
Digital Particle Image Velocimetry ◽  
Bed Shear Stress ◽  
Image Velocimetry

scholarly journals A new method for extracting spanwise vortex from 2D particle image velocimetry data in open-channel flow

2020 ◽  
Vol 68 (3) ◽  
pp. 242-248
Author(s):  
Peng Zhang ◽  
Shengfa Yang ◽  
Jiang Hu ◽  
Wenjie Li ◽  
Xuhui Fu ◽  
...  
Keyword(s):  
Particle Image Velocimetry ◽  
Channel Flow ◽  
Vortex Structure ◽  
Open Channel ◽  
Particle Image ◽  
Open Channel Flow ◽  
New Method ◽  
Two Dimensional ◽  
Image Velocimetry ◽  
Spanwise Vortex

AbstractThe two-dimensional particle image velocimetry (PIV) data are inevitably contaminated by noise due to various imperfections in instrumentation or algorithm, based on which the well-established vortex identification methods often yield noise or incomplete vortex structure with a jagged boundary. To make up this deficiency, a novel method was proposed in this paper and the efficiency of the new method was demonstrated by its applications in extracting the two-dimensional spanwise vortex structures from 2D PIV data in open-channel flows. The new method takes up a single vortex structure by combining model matching and vorticity filtering, and successfully locates the vortex core and draws a streamlined vortex boundary. The new method shows promise as being more effective than commonly used schemes in open-channel flow applications.

scholarly journals Open Channel Flow with Variable Bed Shear Stress

1990 ◽  
Vol 34 ◽  
pp. 433-438 ◽  
Author(s):  
Tetsur OTSUJIMOTO ◽  
H. Antonio CARDOSO ◽  
Akira SAITO
Keyword(s):  
Shear Stress ◽  
Channel Flow ◽  
Open Channel ◽  
Open Channel Flow ◽  
Bed Shear Stress

scholarly journals Methods to Evaluate the Bed Shear Stress in Open Channel Flow

1988 ◽  
Vol 32 ◽  
pp. 503-521 ◽  
Author(s):  
Shinji EGASHIRA ◽  
Mikio KUROKI ◽  
Kenji SAWAI ◽  
Mssashige YAMASAKA
Keyword(s):  
Shear Stress ◽  
Channel Flow ◽  
Open Channel ◽  
Open Channel Flow ◽  
Bed Shear Stress
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