{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Pandey DK"],"funding":["Taighde Éireann – Research Ireland"],"pagination":["107325"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11987696"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["116"],"pubmed_abstract":["Cavitation is increasingly being used for producing liquid-liquid emulsions. Cavity collapse generates microscale high-speed jets, which play a crucial role in cavitation-driven emulsification. It is thus essential to investigate the interaction of cavity and droplet to improve the understanding of the cavitation-driven emulsification process. In this study, we have numerically investigated the interaction of a single cavity-droplet pair dispersed in a water medium mimicking the scenario occurring inside a hydrodynamic cavitation-based fluidic device. A direct numerical simulation utilizing the multi-fluid, volume of fluid (VOF) method has been used for simulating different scenarios of cavity droplet interactions. The effect of the droplet-cavity size ratio (β) and the stand-off parameter (γ) on cavity-droplet dynamics have been investigated. The influence of these parameters on cavity jet velocity U<sub>max</sub> and energy dissipation rate (ε) was evaluated. Cavity jet velocity (U<sub>max</sub>) increases at first, then decreases with the stand-off parameter whereas it increases and becomes almost constant for the size ratio. The maximum cavity jet velocity in the present work is obtained for the case β=2.5(γ=0.7) and β=5(γ=1.2). The energy dissipation rate for cavity-oil droplet interaction is of the order 10<sup>8</sup> m<sup>2</sup>/s<sup>3</sup>, irrespective of the stand-off parameter and size ratio for a given driving force. The results presented in this work improve the current fundamental understanding of cavity-drop interactions and provide a useful basis for developing cavitation-induced droplet breakage models for predicting droplet size distributions, enabling enhanced applications of cavitation for emulsification in the chemical industries."],"journal":["Ultrasonics sonochemistry"],"pubmed_title":["Understanding cavity dynamics near deformable oil drop via numerical simulations."],"pmcid":["PMC11987696"],"funding_grant_id":["20/FFP-A/8518"],"pubmed_authors":["Pandey DK","Ranade VV","Kumar R"],"additional_accession":[]},"is_claimable":false,"name":"Understanding cavity dynamics near deformable oil drop via numerical simulations.","description":"Cavitation is increasingly being used for producing liquid-liquid emulsions. Cavity collapse generates microscale high-speed jets, which play a crucial role in cavitation-driven emulsification. It is thus essential to investigate the interaction of cavity and droplet to improve the understanding of the cavitation-driven emulsification process. In this study, we have numerically investigated the interaction of a single cavity-droplet pair dispersed in a water medium mimicking the scenario occurring inside a hydrodynamic cavitation-based fluidic device. A direct numerical simulation utilizing the multi-fluid, volume of fluid (VOF) method has been used for simulating different scenarios of cavity droplet interactions. The effect of the droplet-cavity size ratio (β) and the stand-off parameter (γ) on cavity-droplet dynamics have been investigated. The influence of these parameters on cavity jet velocity U<sub>max</sub> and energy dissipation rate (ε) was evaluated. Cavity jet velocity (U<sub>max</sub>) increases at first, then decreases with the stand-off parameter whereas it increases and becomes almost constant for the size ratio. The maximum cavity jet velocity in the present work is obtained for the case β=2.5(γ=0.7) and β=5(γ=1.2). The energy dissipation rate for cavity-oil droplet interaction is of the order 10<sup>8</sup> m<sup>2</sup>/s<sup>3</sup>, irrespective of the stand-off parameter and size ratio for a given driving force. The results presented in this work improve the current fundamental understanding of cavity-drop interactions and provide a useful basis for developing cavitation-induced droplet breakage models for predicting droplet size distributions, enabling enhanced applications of cavitation for emulsification in the chemical industries.","dates":{"release":"2025-01-01T00:00:00Z","publication":"2025 May","modification":"2025-07-05T03:04:28.817Z","creation":"2025-07-05T03:04:28.817Z"},"accession":"S-EPMC11987696","cross_references":{"pubmed":["40153969"],"doi":["10.1016/j.ultsonch.2025.107325"]}}