Reversal and inversion of capillary jet breakup at large excitation amplitudes
The evolution of the capillary breakup of a liquid jet under large excitation amplitudes in a parameter regime relevant to inkjet printing is analysed using three-dimensional numerical simulations. The results exhibit a reversal of the breakup length of the jet occurring when the velocity scales ass...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Springer
2021
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| _version_ | 1797072680808087552 |
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| author | Denner, F Evrard, F Castrejon-Pita, A Castrejon-Pita, JR van Wachem, B |
| author_facet | Denner, F Evrard, F Castrejon-Pita, A Castrejon-Pita, JR van Wachem, B |
| author_sort | Denner, F |
| collection | OXFORD |
| description | The evolution of the capillary breakup of a liquid jet under large excitation amplitudes in a parameter regime relevant to inkjet printing is analysed using three-dimensional numerical simulations. The results exhibit a reversal of the breakup length of the jet occurring when the velocity scales associated with the excitation of the jet and surface tension are comparable, and an inversion of the breakup from front-pinching to back-pinching at sufficiently large excitation amplitudes. Both phenomena are shown to be associated with the formation of vortex rings and a local flow obstruction inside the jet, which modify the evolution of the jet by locally reducing or even reversing the growth of the capillary instability. Hence, this study provides a mechanism for the well-known breakup reversal and breakup inversion, which are both prominent phenomena in inkjet printing. An empirical similarity model for the reversal breakup length is proposed, which is shown to be valid throughout the considered range of characteristic parameters. Hence, even though the fluid dynamics observed in capillary jet breakup with large excitation amplitudes are complex, the presented findings allow an accurate prediction of the behaviour of jets in many practically relevant situations, especially continuous inkjet printing. |
| first_indexed | 2024-03-06T23:11:09Z |
| format | Journal article |
| id | oxford-uuid:658241ca-2b9a-41e9-b829-5b0ade33f9a4 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:11:09Z |
| publishDate | 2021 |
| publisher | Springer |
| record_format | dspace |
| spelling | oxford-uuid:658241ca-2b9a-41e9-b829-5b0ade33f9a42022-03-26T18:26:01ZReversal and inversion of capillary jet breakup at large excitation amplitudesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:658241ca-2b9a-41e9-b829-5b0ade33f9a4EnglishSymplectic ElementsSpringer2021Denner, FEvrard, FCastrejon-Pita, ACastrejon-Pita, JRvan Wachem, BThe evolution of the capillary breakup of a liquid jet under large excitation amplitudes in a parameter regime relevant to inkjet printing is analysed using three-dimensional numerical simulations. The results exhibit a reversal of the breakup length of the jet occurring when the velocity scales associated with the excitation of the jet and surface tension are comparable, and an inversion of the breakup from front-pinching to back-pinching at sufficiently large excitation amplitudes. Both phenomena are shown to be associated with the formation of vortex rings and a local flow obstruction inside the jet, which modify the evolution of the jet by locally reducing or even reversing the growth of the capillary instability. Hence, this study provides a mechanism for the well-known breakup reversal and breakup inversion, which are both prominent phenomena in inkjet printing. An empirical similarity model for the reversal breakup length is proposed, which is shown to be valid throughout the considered range of characteristic parameters. Hence, even though the fluid dynamics observed in capillary jet breakup with large excitation amplitudes are complex, the presented findings allow an accurate prediction of the behaviour of jets in many practically relevant situations, especially continuous inkjet printing. |
| spellingShingle | Denner, F Evrard, F Castrejon-Pita, A Castrejon-Pita, JR van Wachem, B Reversal and inversion of capillary jet breakup at large excitation amplitudes |
| title | Reversal and inversion of capillary jet breakup at large excitation amplitudes |
| title_full | Reversal and inversion of capillary jet breakup at large excitation amplitudes |
| title_fullStr | Reversal and inversion of capillary jet breakup at large excitation amplitudes |
| title_full_unstemmed | Reversal and inversion of capillary jet breakup at large excitation amplitudes |
| title_short | Reversal and inversion of capillary jet breakup at large excitation amplitudes |
| title_sort | reversal and inversion of capillary jet breakup at large excitation amplitudes |
| work_keys_str_mv | AT dennerf reversalandinversionofcapillaryjetbreakupatlargeexcitationamplitudes AT evrardf reversalandinversionofcapillaryjetbreakupatlargeexcitationamplitudes AT castrejonpitaa reversalandinversionofcapillaryjetbreakupatlargeexcitationamplitudes AT castrejonpitajr reversalandinversionofcapillaryjetbreakupatlargeexcitationamplitudes AT vanwachemb reversalandinversionofcapillaryjetbreakupatlargeexcitationamplitudes |