scholarly journals Errors in particle tracking velocimetry with high-speed cameras

2011 ◽  
Vol 82 (5) ◽  
pp. 053707 ◽  
Author(s):  
Yan Feng ◽  
J. Goree ◽  
Bin Liu
Keyword(s):  
Particle Tracking ◽  
High Speed ◽  
Particle Tracking Velocimetry

Study on high speed parallel algorithm using PC grid environment for visualization measurements by Digital Holographic Particle Tracking Velocimetry

2008 ◽  
Vol 178 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Shin-ichi Satake ◽  
Takafumi Anraku ◽  
Hiroyuki Kanamori ◽  
Tomoaki Kunugi ◽  
Kazuho Sato ◽  
...  
Keyword(s):  
Parallel Algorithm ◽  
Particle Tracking ◽  
High Speed ◽  
Particle Tracking Velocimetry ◽  
Grid Environment

Study of Subcooled Film Boiling on a Horizontal Disc:1 Part 2—Experiments

2000 ◽  
Vol 123 (2) ◽  
pp. 285-293 ◽  
Author(s):  
D. Banerjee ◽  
V. K. Dhir
Keyword(s):  
Liquid Phase ◽  
Particle Tracking ◽  
Bubble Growth ◽  
High Speed ◽  
Particle Tracking Velocimetry ◽  
Digital Camera ◽  
Film Boiling ◽  
Convection Flow ◽  
Vapor Bubbles ◽  
Natural Convection Flow

Experiments were performed to study subcooled film boiling of performance liquid PF-5060 (made by 3-M Company) on a horizontal copper disc. The experiments were performed for two regimes of film boiling involving departing vapor bubbles (low subcooling) and nondeparting vapor bubbles (high subcooling). By employing high speed digital camera, data were obtained for temporal variation of bubble height, bubble shape and bubble growth rate over one cycle. Heat flux data were deduced from temperatures measured with thermocouples embedded in the solid. The results from the numerical model are compared with experimental data and are found to be in general agreement. Particle Tracking Velocimetry (PTV) experiments were performed for a configuration of non-departing vapor bubbles to study the flow field in the liquid phase. The PTV experiments point to the existence of natural convection flow in the liquid phase and is in qualitative agreement with the predictions available in the literature.

scholarly journals Measurements of the Flow in the Vicinity of an Additively Manufactured Turbine Leading-Edge Using X-Ray Particle Tracking Velocimetry

2020 ◽  
Vol 142 (5) ◽  
Author(s):  
Alex Ruiz ◽  
Kamel Fezzaa ◽  
Jayanta Kapat ◽  
Samik Bhattacharya
Keyword(s):  
Velocity Field ◽  
Turbine Blade ◽  
Particle Tracking ◽  
High Speed ◽  
Particle Tracking Velocimetry ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
Leading Edge ◽  
Inlet Channel ◽  
X Ray

Abstract X-ray particle tracking velocimetry (PTV) is performed, for the first time, to measure the velocity field inside a leading-edge of a turbine blade made by laser-additive-manufacturing (LAM) process. The traditional showerhead holes were replaced by a porous matrix in the leading-edge. The flow through such a leading-edge piece cannot be faithfully recreated by traditional prototype testing methods due to the surface roughness and imperfections caused by LAM process. Hence, direct measurement is the only option. However, it is difficult to measure flow inside such pieces with traditional velocimetry measurements due to the existence of metallic walls. Moreover, small internal size and high flow speeds call for a measurement technique with high spatial and temporal resolutions. To address these issues, we performed time-resolved X-ray PTV using the Advanced Photon Source (APS) synchrotron facility at the Argonne National Laboratory (ANL). A hydraulic system was constructed to run water, mixed with seeding particles, through the leading-edge piece. A high-speed camera captured the images of the seeding particles, which were later processed to create particle tracks. The time-averaged velocity field showed distinct pairs of vortices located in front of the porous outlet inside the leading-edge piece. The inlet channel showed reversed flow due to partial obstruction by the porous inlet of the test piece. Such knowledge of the flow field inside a leading-edge of a turbine blade will help us to design better cooling paths leading to higher cooling efficiency and increased life-span of a turbine blade.

scholarly journals Study on High Speed Parallel Algorithm Using PC for Visualization Measurements by Micro Digital Holographic Particle Tracking Velocimetry

2007 ◽  
Vol 73 (734) ◽  
pp. 2077-2084
Author(s):  
Shinichi SATAKE ◽  
Takafumi ANRAKU ◽  
Hiroyuki KANAMORI ◽  
Tomoaki KUNUGI ◽  
Kazuho SATO ◽  
...  
Keyword(s):  
Parallel Algorithm ◽  
Particle Tracking ◽  
High Speed ◽  
Particle Tracking Velocimetry

Three-Dimensional Particle Tracking Velocimetry With Laser-Light Sheet Scannings

1996 ◽  
Vol 118 (2) ◽  
pp. 352-357 ◽  
Author(s):  
Satoru Ushijima ◽  
Nobukazu Tanaka
Keyword(s):  
Particle Tracking ◽  
High Speed ◽  
Particle Tracking Velocimetry ◽  
Laser Light ◽  
Three Dimensional ◽  
Numerical Procedure ◽  
Light Sheet ◽  
Optical Scanners ◽  
Particle Images

This paper describes three-dimensional particle tracking velocimetry (3D PTV), which enables us to obtain remarkably larger number of velocity vectors than previous techniques. Instead of the usual stereoscopic image recordings, the present 3D PTV visualizes an entire three-dimensional flow with the scanning laser-light sheets generated from a pair of optical scanners and the images are taken by a high-speed video system synchronized with the scannings. The digital image analyses to derive velocity components are based on the numerical procedure (Ushijima and Tanaka, 1994), in which several improvements have been made on the extraction of particle images, the determination of their positions, the derivation of velocity components and others. The present 3D PTV was applied to the rotating fluids, accompanied by Ekman boundary layers, and their complicated secondary flow patterns, as well as the primary circulations, are quantitatively captured.

Swimming of the pea crab (Pinnotheres pisum)

2014 ◽  
Vol 64 (3) ◽  
pp. 239-260
Author(s):  
Corstiaen P.C. Versteegh ◽  
Mees Muller
Keyword(s):  
Particle Tracking ◽  
High Speed ◽  
Particle Tracking Velocimetry ◽  
Video Recording ◽  
Aquatic Organisms ◽  
The Body ◽  
Forward Movement ◽  
High Speed Video ◽  
The Third ◽  
Pea Crab

Aquatic organisms have to deal with different hydrodynamic regimes, depending on their size and speed during locomotion. The pea crab swims by beating the third and fourth pereiopod on opposite sides as pairs. Using particle tracking velocimetry and high-speed video recording, we quantify the kinematics and vortices in the wake of the pea crab. Where the proximal parts of the pereiopods beat in antiphase, their distal parts show an overlapping beat period. By using four instead of two limbs for propulsion, an uninterrupted forward movement is established, reducing the influence of the acceleration reaction. Before body speed is maximal, force generation of the pereiopods seems most active when passing an orthogonal position with the body.

scholarly journals High speed algorithm for particle tracking velocimetry using binary.

1990 ◽  
Vol 10 (38) ◽  
pp. 196-202 ◽  
Author(s):  
Tomomasa UEMURA ◽  
Fujio YAMAMOTO ◽  
Mitsuo KOUKAWA
Keyword(s):  
Particle Tracking ◽  
High Speed ◽  
Particle Tracking Velocimetry
Sign in / Sign up

Export Citation Format

Share Document