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Standard images for particle-image velocimetry
Measurement Science and Technology, 2000Particle-image velocimetry (PIV) offers lots of advantages for studying fluid mechanics. Many PIV techniques and systems have been developed. However, no standard evaluation tool for evaluating the effectiveness and accuracy of the PIV systems has been established.
K Okamoto, S Nishio, T Saga, T Kobayashi
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1989
One of the most challenging and time-consuming problems in experimental fluid mechanics is the measurement of the overall flow field properties, such as the velocity, vorticity, and pressure fields. Local measurements of the velocity field (i.e., at individual points) are now done routinely in many experiments using hot-wire (HW) or laser velocimetry ...
L. M. Lourenco +2 more
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One of the most challenging and time-consuming problems in experimental fluid mechanics is the measurement of the overall flow field properties, such as the velocity, vorticity, and pressure fields. Local measurements of the velocity field (i.e., at individual points) are now done routinely in many experiments using hot-wire (HW) or laser velocimetry ...
L. M. Lourenco +2 more
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Tomographic particle image velocimetry
Experiments in Fluids, 2006This paper describes the principles of a novel 3D PIV system based on the illumination, recording and reconstruction of tracer particles within a 3D measurement volume. The technique makes use of several simultaneous views of the illuminated particles and their 3D reconstruction as a light intensity distribution by means of optical tomography.
G. E. Elsinga +3 more
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Continuous scanning, laser imaging velocimetry
Journal of Visualization, 2006Careful exploitation of the anisotropy native to late time stratified and rotating flows permits the use of a laser scanning measurement technique to simultaneously resolve the 2D velocity field in O(100) slices. The technique relies on getting the Reynolds number from the length scale while keeping the velocity small, this provides a characteristic ...
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Particle-Image Velocimetry and the Assignment Problem
2017The Particle-Image Velocimetry (PIV) is a standard optical contactless measurement technique to determine the velocity field of a fluid flow for example around an obstacle such as an airplane wing. Tiny density neutral and light-reflecting particles are added to the otherwise invisible fluid flow.
Franz-Friedrich Butz +3 more
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2001
Particle Image Velocimetry (PIV) belongs to the class of optical “whole- field” measuring techniques. The name of the method is self-explaining: The velocity distribution in a whole field of a fluid flow is determined by measuring the displacements Δs that the images of tracer particles experience during a time interval Δt.
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Particle Image Velocimetry (PIV) belongs to the class of optical “whole- field” measuring techniques. The name of the method is self-explaining: The velocity distribution in a whole field of a fluid flow is determined by measuring the displacements Δs that the images of tracer particles experience during a time interval Δt.
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Vehicle Dynamics International
Making the right choice of high-speed camera is essential for effective and efficient Particle Image Velocimetry (PIV) analysis of airflow. Photron discusses how to make the right selection
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Making the right choice of high-speed camera is essential for effective and efficient Particle Image Velocimetry (PIV) analysis of airflow. Photron discusses how to make the right selection
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Photogrammetric Particle Image Velocimetry
2004The Particle-Image Velocimetry (PIV) is a meanwhile quite mature measuring method in its application on a 2-dimensional (2D) measuring plane for the collection of 2 or 3 velocity-components (2C resp. 3C) within this plane (planar PIV). A disadvantage is the limitation to a plane of 1...5 mm thickness.
A. Schimpf, S. Kallweit
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Particle Image Velocimetry by Feature Tracking
2001Particle Image Velocimetry (PIV) is a popular approach to flow visualisation in hydro- and aerodynamic studies and applications. The fluid is seeded with particles that follow the flow and make it visible. Traditionally, correlation techniques have been used to estimate the displacements of the particles in a digital PIV sequence.
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