scholarly journals PIV ANALYSIS OF FLOW STRUCTURES AROUND SKEWED SPUR DIKES

2001 ◽  
Vol 45 ◽  
pp. 379-384 ◽  
Author(s):  
Akihiro TOMINAGA ◽  
Koji IJIMA ◽  
Yoshiro NAKANO
Keyword(s):  
Flow Structures ◽  
Spur Dikes ◽  
Piv Analysis

scholarly journals EFFECTS OF PERMEATING FLOW ON FLOW STRUCTURES BEHIND SPUR DIKES

2000 ◽  
Vol 44 ◽  
pp. 1035-1040 ◽  
Author(s):  
Akihiro TOMINAGA ◽  
Masashi NAGAO ◽  
Go NAGASAKA
Keyword(s):  
Flow Structures ◽  
Spur Dikes

scholarly journals EFFECTS OF HYDRAULIC PARAMETERS ON 3D TURBULENT FLOW STRUCTURES AROUND SUBMERGED SPUR-DIKES

2004 ◽  
Vol 48 ◽  
pp. 661-666
Author(s):  
Ichiro KIMURA ◽  
Takashi HOSODA ◽  
Sinichiro ONDA ◽  
Akihiro TOMINAGA
Keyword(s):  
Turbulent Flow ◽  
Flow Structures ◽  
Hydraulic Parameters ◽  
Spur Dikes

PIV Analysis of Instantaneous Flow Structures in an Inkjet Printhead

1999 ◽  
Author(s):  
Hongsheng Zhang ◽  
Carl D. Meinhart
Keyword(s):  
Particle Image ◽  
Fluid Velocity ◽  
Ccd Camera ◽  
Velocity Fields ◽  
Flow Structures ◽  
Instantaneous Flow ◽  
Piv Technique ◽  
Image Velocimetry ◽  
Piv Analysis ◽  
Inkjet Printhead

Abstract This paper presents experimental measurements and observations of instantaneous flow structures inside an inkjet printhead, using a micron-resolution Particle Image Velocimetry (PIV) system to record visualized flows and calculate velocity fields. The PIV technique uses 700 nm diameter fluorescent flow-tracing particles, a pulsed Nd:YAG laser, an epi-fluorescent microscope and an interline-transfer CCD camera to record images of a flow at two successive instances in time. By measuring how far a set of particles move during a specified duration of time, an estimate of the local fluid velocity can be obtained. An electronic timing strategy has been developed to synchronize the PIV lasers, the CCD camera and the drop ejection system. An overall flow pattern during a 500 μs ejection cycle has been observed by phase-averaging hundreds of instantaneous velocity fields, which were recorded at 2–5 μs intervals throughout the cycle. A velocity field with spatial resolution of approximately 10 μm was obtained near the inkjet nozzle. Meniscus and nodes inside the printhead were also observed and recorded.

scholarly journals CONTROL OF FLOW STRUCTURES IN A RIVERSIDE CONCAVITY ZONE BY USING SPUR DIKES

2015 ◽  
Vol 71 (4) ◽  
pp. I_649-I_654
Author(s):  
Akihiro TOMINAGA ◽  
Kenjiro SHO ◽  
Tomomichi KATO ◽  
Naoya KOJIMA
Keyword(s):  
Flow Structures ◽  
Control Of Flow ◽  
Spur Dikes

scholarly journals EFFECTS OF INCLINATION ANGLE ON 3D UNSTEADY FLOW STRUCTURES AROUND SUBMERGED SPUR DIKES

2003 ◽  
Vol 47 ◽  
pp. 841-846
Author(s):  
Ichiro KIMURA ◽  
Takashi HOSODA ◽  
Shinichiro ONDA ◽  
Akihiro TOMINAGA
Keyword(s):  
Unsteady Flow ◽  
Inclination Angle ◽  
Flow Structures ◽  
3D Unsteady Flow ◽  
Spur Dikes

scholarly journals VISUALIZATION ANALYSIS OF FLOW STRUCTURES IN SUBMERGED SPUR DIKES

2000 ◽  
Vol 44 ◽  
pp. 1041-1046 ◽  
Author(s):  
Akihiro TOMINAGA ◽  
Yoshiro NAKANO ◽  
Takayoshi FUJITA
Keyword(s):  
Flow Structures ◽  
Visualization Analysis ◽  
Spur Dikes
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