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Meta‐Lens Particle Image Velocimetry
Advanced Materials, 2023AbstractFluid flow behavior is visualized through particle image velocimetry (PIV) for understanding and studying experimental fluid dynamics. However, traditional PIV methods require multiple cameras and conventional lens systems for image acquisition to resolve multi‐dimensional velocity fields. In turn, it introduces complexity to the entire system.
Xiaoyuan Liu +12 more
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Digital particle image velocimetry [PDF]
Experiments in Fluids, 1991 Digital particle image velocimetry (DPIV) is the digital counterpart of conventional laser speckle velocitmetry (LSV) and particle image velocimetry (PIV) techniques. In this novel, two-dimensional technique, digitally recorded video images are analyzed computationally, removing both the photographic and opto-mechanical processing steps inherent to PIV
Mohammed Gharib, Christian E. Willert
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Electrooptical image shifting for particle image velocimetry
Applied Optics, 1988The direction of fluid motion can be determined in particle image velocimetry (and laser speckle velocimetry) if the image field is spatially shifted between the first and second exposures, so that the most negative fluid velocity still produces a positive particle image displacement. Two new techniques are described which accomplish very fast accurate
C C, Landreth, R J, Adrian
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1994
Particle image velocimetry (PIV), also called particle image displacement velocimetry (PIDV), is a method of whole flow field velocimetry, which is currently causing a lot of interest. This methodrelies on the recording of particle positions in a section of the flow at a given instant in time. The measurement region may be defined by a thin laser sheet
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Particle image velocimetry (PIV), also called particle image displacement velocimetry (PIDV), is a method of whole flow field velocimetry, which is currently causing a lot of interest. This methodrelies on the recording of particle positions in a section of the flow at a given instant in time. The measurement region may be defined by a thin laser sheet
openaire +4 more sources
Deformed Particle Image Pattern Matching in Particle Image Velocimetry
Applied Scientific Research, 1993The deformation of particle image patterns due to velocity gradients causes errors of velocity measurements and false velocity detections in PIV (Particle Image Velocimetry). A novel technique to overcome those limitations inherent in the conventional PIV by correcting the particle image pattern according to the local velocity gradients in two ...
H. T. Huang, H. E. Fiedler
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2020
Moving fluids have always been an object of fundamental physical research. An understanding of the dynamic behavior of streaming liquids and gases is the basis for disciplines in engineering ranging from the design of aircraft and ships to harbor development, wavebreaker projects, cavitation erosion, or sound production and attenuation.
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Moving fluids have always been an object of fundamental physical research. An understanding of the dynamic behavior of streaming liquids and gases is the basis for disciplines in engineering ranging from the design of aircraft and ships to harbor development, wavebreaker projects, cavitation erosion, or sound production and attenuation.
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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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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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