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Bursting of Underwater Oil Drops
Varun Kulkarni1, Venkata Yashasvi Lolla1, Suhas Tamvada1
1Department of Mechanical and Industrial Engineering, <a href="https://ror.org/02mpq6x41">University of Illinois</a>, Chicago, Illinois 60607, USA.
Physical Review Letters
|August 2, 2024
Summary
Underwater oil spills involve rising oil drops. Researchers discovered a novel bulge reversal during drop bursting, forming internal droplets instead of jets, with size linked to liquid properties.
Area of Science:
- Fluid dynamics
- Environmental science
- Geophysics
Background:
- Extensive research has focused on oil drop ascent and slick formation at the air-water interface.
- The bursting phenomenon of rising oil drops preceding slick formation has been under-explored.
Purpose of the Study:
- To investigate the physics of rising oil drop bursting at an air-liquid interface.
- To characterize the formation and properties of droplets released during bursting.
Main Methods:
- High-speed imaging and analysis of oil drop impacts and bursting.
- Experimental manipulation of bulk liquid properties, specifically viscosity.
Main Results:
- Observed a counterintuitive bulge reversal during oil drop bursting.
- Identified the release of a daughter oil droplet within the bulk liquid.
- Demonstrated a correlation between daughter droplet size and bulk liquid viscosity.
Conclusions:
- The bursting of rising oil drops involves a unique bulge reversal mechanism.
- Daughter droplet formation is influenced by fluid properties and can be controlled.
- Findings offer new insights into the initial stages of underwater oil spill evolution.
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