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Développement de méthodes interférométriques pour la caractérisation des champs de particules
| Content Provider | Semantic Scholar |
|---|---|
| Author | Pu, Shiliang |
| Copyright Year | 2005 |
| Abstract | We have studied two optical methods for particle field characterization: ILIDS (Interferometric Laser Imaging for Droplet Sizing) and DIH (Digital In-line Holography). In the case of ILIDS, the particle field is illuminated by a laser sheet and the defocused images are recorded by a CCD camera. We have developed an image processing method. We show that the particle diameter and velocity distribution in a plane can be measured by using a common PIV (Particle Image Velocimetry) system. In DIH case, the particle field is illuminated by a laser beam and the in-line diffraction pattern is directly recorded by a CCD camera. Then, the 3D volume can be numerically reconstructed. We have firstly studied the influence of windowing function. Then, we have developed an image processing method which can give particle 3D location and diameter from the reconstructed image. The experimental tests shows that the two techniques can give reliable results for two-phase flows measurement. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.coria.fr/spip.php?action=dw2_out&id=314 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
