<p>A droplet subjected to external
aerodynamic disturbances disintegrates into smaller droplets and is known as
secondary atomization. Droplet breakup has been studied for low Ohnesorge (<b><i>Oh
< </i></b>0.1) numbers and good agreement has been seen amongst researchers.
However, when it comes to cases with high the <b><i>Oh</i></b> number, i.e.
atomization where the influence of viscosity is significant, very little data
is available in the literature and poor agreement is seen amongst researchers. </p>
<p> </p>
<p>This thesis presents a complete
analysis of the modes of deformation and breakup exhibited by a droplet
subjected to continuous air flow. New modes of breakup have been introduced and
an intermediate case with no droplet fragmentation has been discovered.
Further, results are presented for droplet size-velocity distributions. In
addition, Digital in-line holography (DIH) was utilized to quantify the
size-velocity pdfs using a hybrid algorithm. Finally, particle image
velocimetry (PIV) was employed to characterize the air flow in the unique cases
where drops exhibited no breakup and cases with multiple bag formation. </p>
<p> </p>
<p>A droplet subjected to external
aerodynamic disturbances disintegrates into smaller droplets and is known as
secondary atomization. Secondary breakup finds relevance is almost every
industry that utilizes sprays for their application. </p>
<p> </p>
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/7430606 |
| Date | 16 January 2019 |
| Creators | Vishnu Radhakrishna (5930801) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/CHARACTERIZATION_OF_SECONDARY_ATOMIZATION_AT_HIGH_OHNESORGE_NUMBERS/7430606 |
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