{"file_date_updated":"2020-07-14T12:45:03Z","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"article_number":"18589","file":[{"access_level":"open_access","relation":"main_file","file_id":"5036","date_created":"2018-12-12T10:13:49Z","checksum":"927e151674347661ce36eae2818dafdc","date_updated":"2020-07-14T12:45:03Z","file_name":"IST-2016-472-v1+1_srep18589.pdf","content_type":"application/pdf","creator":"system","file_size":2771236}],"language":[{"iso":"eng"}],"_id":"1589","month":"12","day":"21","quality_controlled":"1","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publist_id":"5582","publication_status":"published","date_updated":"2021-01-12T06:51:48Z","has_accepted_license":"1","department":[{"_id":"BjHo"}],"title":"Magnetic field induced flow pattern reversal in a ferrofluidic Taylor-Couette system","doi":"10.1038/srep18589","article_type":"original","date_created":"2018-12-11T11:52:53Z","abstract":[{"text":"We investigate the dynamics of ferrofluidic wavy vortex flows in the counter-rotating Taylor-Couette system, with a focus on wavy flows with a mixture of the dominant azimuthal modes. Without external magnetic field flows are stable and pro-grade with respect to the rotation of the inner cylinder. More complex behaviors can arise when an axial or a transverse magnetic field is applied. Depending on the direction and strength of the field, multi-stable wavy states and bifurcations can occur. We uncover the phenomenon of flow pattern reversal as the strength of the magnetic field is increased through a critical value. In between the regimes of pro-grade and retrograde flow rotations, standing waves with zero angular velocities can emerge. A striking finding is that, under a transverse magnetic field, a second reversal in the flow pattern direction can occur, where the flow pattern evolves into pro-grade rotation again from a retrograde state. Flow reversal is relevant to intriguing phenomena in nature such as geomagnetic reversal. Our results suggest that, in ferrofluids, flow pattern reversal can be induced by varying a magnetic field in a controlled manner, which can be realized in laboratory experiments with potential applications in the development of modern fluid devices.","lang":"eng"}],"oa":1,"publisher":"Nature Publishing Group","intvolume":"         5","author":[{"last_name":"Altmeyer","orcid":"0000-0001-5964-0203","full_name":"Altmeyer, Sebastian","id":"2EE67FDC-F248-11E8-B48F-1D18A9856A87","first_name":"Sebastian"},{"full_name":"Do, Younghae","last_name":"Do","first_name":"Younghae"},{"last_name":"Lai","full_name":"Lai, Ying","first_name":"Ying"}],"pubrep_id":"472","ddc":["530","540"],"year":"2015","publication":"Scientific Reports","type":"journal_article","citation":{"chicago":"Altmeyer, Sebastian, Younghae Do, and Ying Lai. “Magnetic Field Induced Flow Pattern Reversal in a Ferrofluidic Taylor-Couette System.” <i>Scientific Reports</i>. Nature Publishing Group, 2015. <a href=\"https://doi.org/10.1038/srep18589\">https://doi.org/10.1038/srep18589</a>.","mla":"Altmeyer, Sebastian, et al. “Magnetic Field Induced Flow Pattern Reversal in a Ferrofluidic Taylor-Couette System.” <i>Scientific Reports</i>, vol. 5, 18589, Nature Publishing Group, 2015, doi:<a href=\"https://doi.org/10.1038/srep18589\">10.1038/srep18589</a>.","ieee":"S. Altmeyer, Y. Do, and Y. Lai, “Magnetic field induced flow pattern reversal in a ferrofluidic Taylor-Couette system,” <i>Scientific Reports</i>, vol. 5. Nature Publishing Group, 2015.","short":"S. Altmeyer, Y. Do, Y. Lai, Scientific Reports 5 (2015).","ama":"Altmeyer S, Do Y, Lai Y. Magnetic field induced flow pattern reversal in a ferrofluidic Taylor-Couette system. <i>Scientific Reports</i>. 2015;5. doi:<a href=\"https://doi.org/10.1038/srep18589\">10.1038/srep18589</a>","ista":"Altmeyer S, Do Y, Lai Y. 2015. Magnetic field induced flow pattern reversal in a ferrofluidic Taylor-Couette system. Scientific Reports. 5, 18589.","apa":"Altmeyer, S., Do, Y., &#38; Lai, Y. (2015). Magnetic field induced flow pattern reversal in a ferrofluidic Taylor-Couette system. <i>Scientific Reports</i>. Nature Publishing Group. <a href=\"https://doi.org/10.1038/srep18589\">https://doi.org/10.1038/srep18589</a>"},"date_published":"2015-12-21T00:00:00Z","volume":5,"oa_version":"Published Version","scopus_import":1,"status":"public"}