| 1. | Aerodynamics - Computing power at the service of measurement |
| | PIV * is a method used to chart speeds in flows.... Two ONERA engineer-researcher teams - one of experimental aerodynamicists, the other data processing experts specializing in image processing, have together developed the FOLKI*-SPIV software for high-speed processing of sequences of PIV images (Particle Image Velocimetry).... |
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| 2. | ONERA DAFE : 2D and 3D Particle Image Velocimetry (PIV) - ONERA / DAFE-EN |
| | ONERA DAFE : 2D and 3D Particle Image Velocimetry (PIV) - ONERA / DAFE-EN... Particle Image Velocimetry (PIV)... Sample image from a high-speed PIV experiment (massive separation over a rounded ramp, S19Ch wind-tunnel, [ 1-2 ]).... As material has become more and more robust and performing, PIV is now an accessible tool to extract precious flow information such average flow fields, spatial correlations, or tracking of coherent structures for instance.... |
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| 3. | PIV at ONERA DAFE : equipment - ONERA / DAFE-EN |
| | PIV at ONERA DAFE : equipment - ONERA / DAFE-EN... High-speed stereo PIV acquisition setup in S19Ch wind-tunnel (control of flow separation over a rounded ramp).... The MTRO team of DAFE possesses four different PIV acquisition systems, which enable to follow the constantly increasing needs in PIV measurements for both research and industrial contracts.... |
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| 4. | Two-component plane PIV at ONERA DAFE - ONERA / DAFE-EN |
| | Two-component plane PIV at ONERA DAFE - ONERA / DAFE-EN... 2D2C PIV... The key idea underlying PIV is to measure the velocity of tracer particles present in the flow, which are chosen small enough to be passively entrained (see the page for typical characteristics of the seedings used in our wind-tunnels).... |
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| 5. | Three-component or Stereo plane PIV at ONERA DAFE - ONERA / DAFE-EN |
| | Three-component or Stereo plane PIV at ONERA DAFE - ONERA / DAFE-EN... 2D3C or Stereo PIV... Sketch of a stereoscopic PIV setup arranged to match the Scheimpflug condition (reprinted from Raffel et al.... In Stereoscopic PIV, the basic principle of PIV is extended in order to determine the three components of the velocity vector within the light sheet plane, by mimicking binocular vision.... |
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| 6. | Tomographic PIV - ONERA / DAFE-EN |
| | Tomographic PIV - ONERA / DAFE-ENWho are we ?Fundamental and Experimental Aerodynamics... 3D3C Tomographic PIV - under construction. Three-component displacement in a volume. Figure 1 :. General principle of tomographic PIV (reprinted from Elsinga et al.. 2006, see references below).. In order to determine the flow velocity in a volume, tomographic PIV requires additional cameras compared to 2D2C and 2D3C PIV, typically four, and adapted optics to illuminate a thick volume in the seeded flow.. |
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| 7. | ONERA DAFE DTIM : FOLKI-SPIV software : fast and accurate stereo PIV vector processing based on GPU - ONERA / DAFE-EN |
| | ONERA DAFE DTIM : FOLKI-SPIV software : fast and accurate stereo PIV vector processing based on GPU - ONERA / DAFE-EN... Fast and accurate PIV vector processing based on GPU... FOLKI-SPIV is a PIV vector field computation software recently developed by the, and presently at use in several departments of ONERA.... |
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| 8. | Aerospace Lab Particle Image Velocimetry (ALPIV) - ONERA / DAFE-EN |
| | Current research interests include the development of PIV algorithms with increased spatial resolution, and tomographic PIV.... |
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| 9. | FOLKI-PIV - ONERA / DTIM-EN |
| | Processing of PIV data... Using the GPU to speed-up PIV processing 1 Particle Image Velocimetry Particle Image Velocimetry (PIV) is an experimental technique that enables the measurement of fluid velocity fields through the seeding of fluid with small particles that are imaged at a high rate with highspeed cameras coupled with a laser flash, cf..... |
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| 10. | PIV Measurement of the Flow Downstream of a Helicopter Rotor - ONERA's Science Pictures |
| | PIV Measurement of the Flow Downstream of a Helicopter Rotor - ONERA's Science Pictures... PIV Measurement of the Flow Downstream of a Helicopter Rotor copyright © ONERA 1996-2006... PIV (Particle Image Velocimetry) Measurement of the Flow Downstream of a Helicopter Rotor.... To study the velocity field around the helicopter, a nonintrusive optical technique called PIV (Particle Image Velocimetry) is used.... |
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