Predictive framework for the spreading of liquid drops and the formation of liquid marbles on hydrophobic particle bed

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dc.contributor.author Mozhi Devan Padmanathan, Arul
dc.contributor.author Sneha Ravi, Apoorva
dc.contributor.author Choudhary, Hema
dc.contributor.author Varanakkottu, Subramanyan Namboodiri
dc.contributor.author Dalvi, Sameer V.
dc.date.accessioned 2019-06-19T11:12:57Z
dc.date.available 2019-06-19T11:12:57Z
dc.date.issued 2019-04
dc.identifier.citation Mozhi Devan Padmanathan, Arul; Sneha Ravi, Apoorva; Choudhary, Hema; Varanakkottu, Subramanyan Namboodiri and Dalvi, Sameer V., "Predictive framework for the spreading of liquid drops and the formation of liquid marbles on hydrophobic particle bed", Langmuir, DOI: 10.1021/acs.langmuir.9b00698, April 2019. en_US
dc.identifier.issn 0743-7463
dc.identifier.issn 1520-5827
dc.identifier.uri https://doi.org/10.1021/acs.langmuir.9b00698
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/4531
dc.description.abstract In this work, we have developed a model to describe the behavior of liquid drops upon impaction on hydrophobic particle bed and verified it experimentally. Poly(tetrafluoroethylene) (PTFE) particles were used to coat drops of water, aqueous solutions of glycerol (20, 40, and 60% v/v), and ethanol (5 and 12% v/v). The experiments were conducted for Weber number (We) ranging from 8 to 130 and Reynolds number (Re) ranging from 370 to 4460. The bed porosity was varied from 0.8 to 0.6. The experimental values of ?max (ratio of the diameter at the maximum spreading condition to the initial drop diameter) were estimated from the time-lapsed images captured using a high-speed camera. The theoretical ?max was estimated by making energy balances on the liquid drop. The proposed model accounts for the energy losses due to viscous dissipation and crater formation along with a change in kinetic energy and surface energy. A good agreement was obtained between the experimental ?max and the estimated theoretical ?max. The proposed model yielded a least % absolute average relative deviation (% AARD) of 5.5 � 4.3 compared to other models available in the literature. Further, it was found that the liquid drops impacting on particle bed are completely coated with PTFE particles with ?max values greater than 2.
dc.description.statementofresponsibility by Arul Mozhi Devan Padmanathan, Apoorva Sneha Ravi, Hema Choudhary,Subramanyan Namboodiri Varanakkottu and Sameer V. Dalvi
dc.language.iso en en_US
dc.publisher American Chemical Society en_US
dc.title Predictive framework for the spreading of liquid drops and the formation of liquid marbles on hydrophobic particle bed en_US
dc.type Article en_US
dc.relation.journal Langmuir


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