This thesis studies a droplet of ferrofluid impacting a liquid water pool.
The ferrofluid is oil-based and therefore immersible in water. The shape of
the ferrofluid drop at impact is changed by using an electromagnet underneath
the liquid pool. The magnet is turned off by an external trigger just before the
drop collides with the liquid pool surface, to stop the magnetic interaction. The
prolate or oblate shape of the drop has an influence on the cavity formation and
evolution after the impact. The experiments look specifically at the maximum
depth and diameter of the cavity, as a function of the drop impact shape for the
same impact velocity. This is done over a range of impact velocities. The prolate
drops generate deeper cavities than spherical or oblate drops. Furthermore, a
study is conducted on the jet formation that occurs during the cavity collapse to
investigate the influence of droplet shape on the jet velocity.
| Identifer | oai:union.ndltd.org:kaust.edu.sa/oai:repository.kaust.edu.sa:10754/686450 |
| Date | 09 1900 |
| Creators | Kattoah, Moaz |
| Contributors | Thoroddsen, Sigurdur T, Physical Science and Engineering (PSE) Division, Truscott, Tadd, Choon, Kim |
| Source Sets | King Abdullah University of Science and Technology |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Rights | 2023-12-15, At the time of archiving, the student author of this thesis opted to temporarily restrict access to it. The full text of this thesis will become available to the public after the expiration of the embargo on 2023-12-15. |
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