Drift Current on Water Surface with a Film of Hydrophobic Particles under Uniform and Decelerating Airflow Conditions

The influence of a water surface film composed of hydrophobic particles on the development of drift current under the effect of wind is investigated. In a uniform airflow on a flat water surface, the drift current is caused by viscous forces and increases along the fetch. The formation of stationary...

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Bibliographic Details
Published in:Moscow University physics bulletin 2023-08, Vol.78 (4), p.578-583
Main Authors: Ivanova, I. N., Melnikova, O. N.
Format: Article
Language:English
Subjects:
Air flow
Deceleration
Drift
Hydrophobicity
Mathematical and Computational Physics
Physics
Physics and Astronomy
Theoretical
Wave breaking
Wind effects
Wind waves
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Summary:The influence of a water surface film composed of hydrophobic particles on the development of drift current under the effect of wind is investigated. In a uniform airflow on a flat water surface, the drift current is caused by viscous forces and increases along the fetch. The formation of stationary waves on the drift current has been observed when the drift velocity exceeds 0.23 m/s. In a decelerating airflow, in the presence of wind waves, the total component of the drift velocity cyclically increases and drops until it reaches the viscous component upon a steep wind wave breaking into longer linear waves. As the particle settling time increases, the maximum ratio of the wave component of the drift velocity to the total component decreases from 0.6 for clear water to 0.3 for days.
ISSN:0027-1349
1934-8460
DOI:10.3103/S0027134923040082