Memoryless drop breakup in turbulence
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2022
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| _version_ | 1867169153220083712 |
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| author | Vela-Martín, Alberto Avila, Marc |
| author_facet | Vela-Martín, Alberto Avila, Marc |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The breakup of drops and bubbles in turbulent fluids is a key mechanism in many environmental and engineering processes. Even in the well-studied dilute case, quantitative descriptions of drop fragmentation remain elusive and empirical models continue to proliferate. We here investigate drop breakup by leveraging a novel computer code, which enables the generation of ensembles of experiments with thousands of independent, fully-resolved simulations. We show that in homogeneous isotropic turbulence breakup is a memoryless process whose rate depends only on the Weber number. A simple model based on the computed breakup rates can accurately predict experimental measurements and demonstrates that dilute emulsions evolve through a continuous fragmentation process with exponentially increasing time scales. Our results suggest a non-vanishing breakup rate below the critical Kolmogorov-Hinze diameter, challenging the current paradigm of inertial drop fragmentation. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_951271 |
| institution | PANGAEA |
| language | en |
| publishDate | 2022 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Memoryless drop breakup in turbulence Vela-Martín, Alberto Avila, Marc Binary Object; Binary Object (File Size); Description; direct numerical simulation; drop breakup; emulsions; Figure; File format; File name; multiphase flows; Numerical simulated; phase-field models; Title; turbulence; Variable The breakup of drops and bubbles in turbulent fluids is a key mechanism in many environmental and engineering processes. Even in the well-studied dilute case, quantitative descriptions of drop fragmentation remain elusive and empirical models continue to proliferate. We here investigate drop breakup by leveraging a novel computer code, which enables the generation of ensembles of experiments with thousands of independent, fully-resolved simulations. We show that in homogeneous isotropic turbulence breakup is a memoryless process whose rate depends only on the Weber number. A simple model based on the computed breakup rates can accurately predict experimental measurements and demonstrates that dilute emulsions evolve through a continuous fragmentation process with exponentially increasing time scales. Our results suggest a non-vanishing breakup rate below the critical Kolmogorov-Hinze diameter, challenging the current paradigm of inertial drop fragmentation. |
| title | Memoryless drop breakup in turbulence |
| topic | Binary Object; Binary Object (File Size); Description; direct numerical simulation; drop breakup; emulsions; Figure; File format; File name; multiphase flows; Numerical simulated; phase-field models; Title; turbulence; Variable |
| url | https://doi.org/10.1594/PANGAEA.951271 |