76th Annual Meeting of the APS Division of Fluid Dynamics (November 19, 2023 — November 21, 2023)

P0017: Blooming of Emulsion Drops during Evaporation

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Authors

• Teng Dong, ThAMeS Multiphase,Department of Chemical Engineering, University College London, WC1E 7JE, UK.
• Kristo Kotsi, ThAMeS Multiphase,Department of Chemical Engineering, University College London, WC1E 7JE, UK.
• Kobayashi Takeshi, ThAMeS Multiphase,Department of Chemical Engineering, University College London, WC1E 7JE, UK.
• Alexander Moriarty, ThAMeS Multiphase,Department of Chemical Engineering, University College London, WC1E 7JE, UK.
• Ian Robbie, Innospec Ltd. Oil Sites Road, Ellesmere Port, Cheshire, CH65 4EY, UK.
• Striolo Alberto, School of Chemical, Biological and Materials Engineering, The University of Oklahoma.
• Panagiota Angeli, ThAMeS Multiphase,Department of Chemical Engineering, University College London, WC1E 7JE, UK.

DOI: https://doi.org/10.1103/APS.DFD.2023.GFM.P0017

Droplets containing dispersed particles exhibit intriguing patterns during the evaporation, like the well-known "coffee ring" effect. In contrast with their particle-laden counterparts, emulsion droplets pose a more intricate scenario due to the coalescence of tiny dispersed droplets primarily occurring at the contact line. The coalescnece froms a continuous film that spreds outward. In this poster, we reconstructed both the spatial and temporal evolution of these droplets, along with the spreading of the surrounding film. A newly discovered phenomenon, the "blooming" of emulsion droplets, is presented.