scholarly journals Velocity Measurements in Compound Open-Channel Flows by making use of Particle-Image Velocimetry

1994 ◽  
Vol 38 ◽  
pp. 697-702
Author(s):  
Hiroji NAKAGAWA ◽  
Iehisa NEZU ◽  
Ken-ichi SAEKI ◽  
Takashi ABE
Keyword(s):  
Particle Image Velocimetry ◽  
Open Channel ◽  
Particle Image ◽  
Channel Flows ◽  
Velocity Measurements ◽  
Open Channel Flows ◽  
Image Velocimetry

scholarly journals Investigation of Coherent Vortices in Partly Vegetated Open-channel Flows with a Particle-Image Velocimetry

1998 ◽  
Vol 1 ◽  
pp. 719-728
Author(s):  
Iehisa NEZU ◽  
Kouki ONITSUKA ◽  
Hideki JOHMEN ◽  
Yuki SAGARA ◽  
Kazuya IKETANI
Keyword(s):  
Particle Image Velocimetry ◽  
Open Channel ◽  
Particle Image ◽  
Channel Flows ◽  
Open Channel Flows ◽  
Image Velocimetry ◽  
Coherent Vortices

PIV Investigation of an Open Channel Flow Over a Forward Facing Step

2007 ◽  
Author(s):  
M. K. Shah ◽  
M. F. Tachie
Keyword(s):  
Open Channel ◽  
Particle Image ◽  
Open Channel Flow ◽  
Reynolds Stresses ◽  
Velocity Measurements ◽  
Particle Image Velocimetry Technique ◽  
Mean Velocity ◽  
Freestream Velocity ◽  
Image Velocimetry ◽  
Forward Facing Step

The characteristics of an open channel turbulent flow over a forward facing step (FFS) are investigated in the present study. Two step heights, h = 6 and 9 mm, at Reynolds number, Reh, (based on the approach freestream velocity, U0, and step height, h) of 1900 and 2800 respectively were studied. Particle image velocimetry technique (PIV) was used to obtain detailed velocity measurements upstream of the FFS, in the reattachment region (x/h = 0, 1, 2) and in the redevelopment region (x/h = 4, 10, 15 and 50). The boundary layer integral parameters, mean velocity profiles and Reynolds stresses obtained in the reattachment and redevelopment region are used to document some of the salient features of the flow.

High Spatio-Temporal Resolution Digital Particle Image Velocimetry Near Compliant, Dynamically Moving Boundaries

2002 ◽  
Author(s):  
Ali Etebari ◽  
Claude Abiven ◽  
Olga Pierrakos ◽  
Pavlos P. Vlachos
Keyword(s):  
Particle Image Velocimetry ◽  
Particle Image ◽  
State Of The Art ◽  
Digital Particle Image Velocimetry ◽  
Moving Boundaries ◽  
Global Flow ◽  
Velocity Measurements ◽  
Non Invasive ◽  
Image Velocimetry ◽  
Spatio Temporal

Digital Particle Image Velocimetry (DPIV) currently represents the state of the art for non-invasive global flow velocity measurements. The instantaneous velocities are determined by cross-correlating patterns of particles between consecutive images, thus mapping in space and time the velocity distribution for thousands of points in the flow field simultaneously.

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