欧兰公司主站 欧兰公司双线路主站
北京欧兰科技发展有限公司




Interferometric Mie Imaging (IMI)

IMI setup

SizingMaster IMI setup

The Interferometric Mie Imaging (IMI) method is a sizing technique for the evaluation of the diameter of spherical particles, droplets and bubbles similar to PDI. The working principle is based on the out-of-focus imaging of particles illuminated by a laser light sheet. The optical setup of a standard IMI system consists of a laser-light sheet and a digital camera with a high quality lens. Moving the CCD chip of the camera to an out-of-focus position an interference fringe pattern becomes visible in the overlapping region. The visible fringe pattern corresponds exactly to the far field scattering which can be calculated by the Mie theory.

The number of fringes within the aperture image depends on the diameter of the droplet and the aperture angle. With an increasing size of particles, the number of fringes increases when the aperture angle is fixed by the experimental setup. The size of the aperture image is a measure for the z-position of the particles and depends on the corresponding z-displacement. Increasing the latter leads to an increasing size of the aperture image. Using the planar coordinates of the aperture images the corresponding x- and y-positions of the particles in the object plane can be calculated. The size of the particles is determined by analysis of the fringe patterns.

Information
- Particle size (d)
- Particle position (x, y, z)
- Statistics, histograms (D10, SMD, Dv10, Dv50, Dv90,
  v-d correlation)
- Velocity (u, v, w)
- Number density
- Mass flux

Applications
-liquid sprays (fuels, water, paint, pharmaceutical, crop)
-droplet atomization
-bubbles (heat exchangers, industrial processes)




基于博卡先锋SiteEngine构建
北京欧兰科技发展有限公司 版权所有 电子邮件:info@oplanchina.com oplan@263.net,
联系电话:010-62623871, 62616041,62612809 传真:010-59713638
地址:北京市,海淀区,上地十街1号,辉煌国际中心1号楼1006室 邮政编码:100085京ICP备07038319号-1
Processed in 0.039 second(s), 3 queries