Coalescence dynamics of a compound drop on a deep liquid pool

Deka, Hiranya and Biswas, Gautam and Sahu, Kirti Chandra and Kulkarni, Yash and Dalal, Amaresh (2019) Coalescence dynamics of a compound drop on a deep liquid pool. Journal of Fluid Mechanics, 866. ISSN 0022-1120

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The partial coalescence dynamics of a compound drop in a liquid pool is numerically investigated. We study the effect of the ratio of the inner to outer radii of the compound drop while maintaining a constant liquid volume in the outer shell of the compound droplet. It is observed that for small values of the radius ratio, the coalescence dynamics is similar to that of a ‘simple’ drop, but the partial coalescence is suppressed for large values of . Increasing the value of decreases the distance migrated by the inner bubble in the downward direction inside the pool. The location of the bubble after coalescence is found to play an important role in the pinch-off process of the satellite drop. The influence of the governing dimensionless parameters on the coalescence dynamics has also been investigated.

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IITH Creators:
IITH CreatorsORCiD
Sahu, Kirti Chandra
Item Type: Article
Subjects: Chemical Engineering
Divisions: Department of Chemical Engineering
Depositing User: Team Library
Date Deposited: 13 Mar 2019 09:35
Last Modified: 13 Mar 2019 09:35
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