DROP BREAK-UP AND COALESCENCE IN A STIRRED TANK
It is shown in the paper that drop size distribution in liquid-liquid dispersions is affected by both the fine-scale and the large-scale inhomogeneity of turbulence. Fine-scale inhomogeneity is related to the phenomenon of local intermittency and described using a multifractal formalism. Largescale...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Gdańsk University of Technology
2003-07-01
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| Series: | TASK Quarterly |
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| Online Access: | https://journal.mostwiedzy.pl/TASKQuarterly/article/view/2191 |
| _version_ | 1818242377701130240 |
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| author | WIOLETTA PODGÓRSKA JERZY BAŁDYGA |
| author_facet | WIOLETTA PODGÓRSKA JERZY BAŁDYGA |
| author_sort | WIOLETTA PODGÓRSKA |
| collection | DOAJ |
| description |
It is shown in the paper that drop size distribution in liquid-liquid dispersions is affected by both the fine-scale and the large-scale inhomogeneity of turbulence. Fine-scale inhomogeneity is related to the phenomenon of local intermittency and described using a multifractal formalism. Largescale inhomogeneity is related to inhomogeneous distributions of the locally averaged properties of turbulence, including the rate of energy dissipation and the integral scale of turbulence. Large-scale distributions of the properties of turbulence in a stirred tank are considered with a network of wellmixed zones. CFD methods are used to compute the properties of turbulence in these zones. A model taking into account inhomogeneity of both types explains the effect of the system’s scale on drop size; it predicts smaller maximum stable drop sizes than the classic Kolmogorov theory of turbulence. The model predictions agree well with experimental data.
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| first_indexed | 2024-12-12T13:44:16Z |
| format | Article |
| id | doaj.art-315eacf1c3f6436eab963a4f66715212 |
| institution | Directory Open Access Journal |
| issn | 1428-6394 |
| language | English |
| last_indexed | 2024-12-12T13:44:16Z |
| publishDate | 2003-07-01 |
| publisher | Gdańsk University of Technology |
| record_format | Article |
| series | TASK Quarterly |
| spelling | doaj.art-315eacf1c3f6436eab963a4f667152122022-12-22T00:22:43ZengGdańsk University of TechnologyTASK Quarterly1428-63942003-07-0173DROP BREAK-UP AND COALESCENCE IN A STIRRED TANKWIOLETTA PODGÓRSKA 0JERZY BAŁDYGA1Warsaw University of Technology, Department of Chemical and Process EngineeringWarsaw University of Technology, Department of Chemical and Process Engineering It is shown in the paper that drop size distribution in liquid-liquid dispersions is affected by both the fine-scale and the large-scale inhomogeneity of turbulence. Fine-scale inhomogeneity is related to the phenomenon of local intermittency and described using a multifractal formalism. Largescale inhomogeneity is related to inhomogeneous distributions of the locally averaged properties of turbulence, including the rate of energy dissipation and the integral scale of turbulence. Large-scale distributions of the properties of turbulence in a stirred tank are considered with a network of wellmixed zones. CFD methods are used to compute the properties of turbulence in these zones. A model taking into account inhomogeneity of both types explains the effect of the system’s scale on drop size; it predicts smaller maximum stable drop sizes than the classic Kolmogorov theory of turbulence. The model predictions agree well with experimental data. https://journal.mostwiedzy.pl/TASKQuarterly/article/view/2191CFDintermittencelarge-scale inhomogeneitysmall-scale inhomogeneity |
| spellingShingle | WIOLETTA PODGÓRSKA JERZY BAŁDYGA DROP BREAK-UP AND COALESCENCE IN A STIRRED TANK TASK Quarterly CFD intermittence large-scale inhomogeneity small-scale inhomogeneity |
| title | DROP BREAK-UP AND COALESCENCE IN A STIRRED TANK |
| title_full | DROP BREAK-UP AND COALESCENCE IN A STIRRED TANK |
| title_fullStr | DROP BREAK-UP AND COALESCENCE IN A STIRRED TANK |
| title_full_unstemmed | DROP BREAK-UP AND COALESCENCE IN A STIRRED TANK |
| title_short | DROP BREAK-UP AND COALESCENCE IN A STIRRED TANK |
| title_sort | drop break up and coalescence in a stirred tank |
| topic | CFD intermittence large-scale inhomogeneity small-scale inhomogeneity |
| url | https://journal.mostwiedzy.pl/TASKQuarterly/article/view/2191 |
| work_keys_str_mv | AT wiolettapodgorska dropbreakupandcoalescenceinastirredtank AT jerzybałdyga dropbreakupandcoalescenceinastirredtank |