Abstract

A digital holographic particle tracking velocimetry system is applied to quantitatively study the drop atomization induced by capillary waves, and the breakup caused by increased sound pressure levels. A wavelet-based algorithm is used for particle detection and autofocusing with a wide size range of 20 μm–2 mm. To eliminate the influence of large particles on small particles, a two-step detection method is adopted. Large drops are first characterized and simulated by a diffraction-based model. Then the contributions of the drops are subtracted from the original hologram followed by the detection of small droplets. Finally, the velocity and size distribution of the secondary droplets are obtained from the experimental holograms. The results demonstrate the validity of the digital in-line holographic technique for the atomization and breakup study of acoustically levitated drops.

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Wavelet-based depth-of-field extension, accurate autofocusing, and particle pairing for digital inline particle holography

Wu Yingchun, Wu Xuecheng, Yang Jing, Wang Zhihua, Gao Xiang, Zhou Binwu, Chen Linghong, Qiu Kunzan, Gérard Gréhan, and Cen Kefa
Appl. Opt. 53(4) 556-564 (2014)

Quantitative, three-dimensional diagnostics of multiphase drop fragmentation via digital in-line holography

Jian Gao, Daniel R. Guildenbecher, Phillip L. Reu, Varun Kulkarni, Paul E. Sojka, and Jun Chen
Opt. Lett. 38(11) 1893-1895 (2013)

Inverse problem approach in particle digital holography: out-of-field particle detection made possible

Ferréol Soulez, Loïc Denis, Éric Thiébaut, Corinne Fournier, and Charles Goepfert
J. Opt. Soc. Am. A 24(12) 3708-3716 (2007)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (15)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription