scholarly journals Instantaneous Two-Dimensional Velocity Field Measurements in a Periodic Flame Using Particle Tracking Velocimetry

1988 ◽  
Vol 31 (9) ◽  
pp. 2388-2388
Author(s):  
G. S. Lewis ◽  
B. J. Cantwell
Keyword(s):  
Velocity Field ◽  
Particle Tracking ◽  
Particle Tracking Velocimetry ◽  
Field Measurements ◽  
Two Dimensional

scholarly journals Measurement of Lagrangian Trajectories in a 3 L Stirred Tank Reactor using 4D Particle Tracking Velocimetry with Shake-the-Box

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Jürgen Fitschen ◽  
Alexandra Von Kameke ◽  
Sebastian Hofmann ◽  
Marko Hoffmann ◽  
Michael Schlüter
Keyword(s):  
Flow Field ◽  
Particle Tracking ◽  
Particle Tracking Velocimetry ◽  
Three Dimensional ◽  
Field Measurements ◽  
Stirred Tank ◽  
Two Dimensional ◽  
Scientific Publications ◽  
Stirred Tank Reactor ◽  
Tank Reactor

Stirred tank reactors are widely used in the chemical industry and bioprocess engineering and, consequently, a large number of scientific publications deal with the characterization of those apparatuses. However, there is very little information about the flow conditions. This is mostly due to the fact that these apparatuses are generally made of stainless steel, which restricts optical access. Furthermore, three-dimensional flow field measurements are still not trivial and involve costly equipment, therefore, investigations often reduce to two-dimensional PIV measurements. Nevertheless, recent works (Rosseburg et al., 2018; Taghavi and Moghaddas, 2020; Kuschel et al., 2021) impressively show the formation of compartments which hinder and delay mixing. However, these measurements are based either on instantaneous concentration profiles by means of pLIF measurements or on a two-dimensional projection of the system and thus do not allow conclusions about the development of the three dimensional compartments and the exchange rates between the compartments. In this work, for the first time, instantaneous flow field measurements with high spatial and temporal resolution are performed in the entire volume of a 3L stirred tank reactor based on 4D particle tracking velocimetry. The highly resolved particle trajectories further allow detailed Lagrangian analysis of the mixing dynamics inside the reactor, data that was previously inaccessible.

Simultaneous 3D temperature and velocity field measurements of micro-flow with laser-induced fluorescence and micro-digital holographic particle tracking velocimetry: Numerical study

2015 ◽  
Vol 13 (7) ◽  
pp. 072801-72805
Author(s):  
Longchao Yao Longchao Yao ◽  
Xuecheng Wu Xuecheng Wu ◽  
Jing Yang Jing Yang ◽  
Yingchun Wu Yingchun Wu ◽  
Xiang Gao Xiang Gao ◽  
...  
Keyword(s):  
Velocity Field ◽  
Particle Tracking ◽  
Particle Tracking Velocimetry ◽  
Numerical Study ◽  
Field Measurements ◽  
Laser Induced Fluorescence ◽  
Micro Flow

scholarly journals Two-dimensional ultrasound Doppler velocimeter for velocity field measurements of liquid metal flows

PAMM ◽  
2011 ◽  
Vol 11 (1) ◽  
pp. 649-650
Author(s):  
Sven Franke ◽  
Andreas Fischer ◽  
Lars Büttner ◽  
Jürgen Czarske ◽  
Dirk Räbiger ◽  
...  
Keyword(s):  
Velocity Field ◽  
Liquid Metal ◽  
Field Measurements ◽  
Two Dimensional ◽  
Ultrasound Doppler

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.

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