{"date_updated":"2024-01-05T12:54:10Z","language":[{"iso":"eng"}],"publication":"arXiv:2211.00559","abstract":[{"lang":"eng","text":"We study the influence of fringing magnetic fields on turbulent thermal\r\nconvection in a horizontally extended rectangular domain. The magnetic field is\r\ncreated in the gap between two semi-infinite planar magnetic poles, with the\r\nconvection layer located near the edge of the gap. We employ direct numerical\r\nsimulations in this setup for fixed Rayleigh and small Prandtl numbers, but\r\nvary the fringe-width by controlling the gap between the magnetic poles and the\r\nconvection cell. The magnetic field generated by the magnets is strong enough\r\nto cease the flow in high magnetic flux region of the convection cell. We\r\nobserve that as the local vertical magnetic field strength increases, the large\r\nscale structures become thinner and align themselves perpendicular to the\r\nlongitudinal sidewalls. We determine the local Nusselt and Reynolds numbers as\r\nfunctions of the local Hartmann number (based on the vertical component of the\r\nmagnetic field) and estimate the global heat and momentum transport. We show\r\nthat the global heat transport decreases with increasing fringe-width for\r\nstrong magnetic fields but increases with increasing fringe-width for weak\r\nmagnetic fields. In the regions of large vertical magnetic fields, the\r\nconvective motion becomes confined to the vicinity of the sidewalls. The\r\namplitudes of these wall modes show a non-monotonic dependence on the\r\nfringe-width."}],"title":"Effects of strong fringing magnetic fields on turbulent thermal  convection","year":"2022","author":[{"full_name":"Bhattacharya, Shashwat","last_name":"Bhattacharya","first_name":"Shashwat"},{"full_name":"Boeck, Thomas","last_name":"Boeck","first_name":"Thomas"},{"full_name":"Krasnov, Dmitry","last_name":"Krasnov","first_name":"Dmitry"},{"first_name":"Jörg","full_name":"Schumacher, Jörg","last_name":"Schumacher"}],"user_id":"67287","date_created":"2024-01-05T12:51:30Z","external_id":{"arxiv":["2211.00559"]},"_id":"50224","status":"public","type":"preprint","citation":{"mla":"Bhattacharya, Shashwat, et al. “Effects of Strong Fringing Magnetic Fields on Turbulent Thermal  Convection.” <i>ArXiv:2211.00559</i>, 2022.","chicago":"Bhattacharya, Shashwat, Thomas Boeck, Dmitry Krasnov, and Jörg Schumacher. “Effects of Strong Fringing Magnetic Fields on Turbulent Thermal  Convection.” <i>ArXiv:2211.00559</i>, 2022.","apa":"Bhattacharya, S., Boeck, T., Krasnov, D., &#38; Schumacher, J. (2022). Effects of strong fringing magnetic fields on turbulent thermal  convection. In <i>arXiv:2211.00559</i>.","short":"S. Bhattacharya, T. Boeck, D. Krasnov, J. Schumacher, ArXiv:2211.00559 (2022).","ama":"Bhattacharya S, Boeck T, Krasnov D, Schumacher J. Effects of strong fringing magnetic fields on turbulent thermal  convection. <i>arXiv:221100559</i>. Published online 2022.","bibtex":"@article{Bhattacharya_Boeck_Krasnov_Schumacher_2022, title={Effects of strong fringing magnetic fields on turbulent thermal  convection}, journal={arXiv:2211.00559}, author={Bhattacharya, Shashwat and Boeck, Thomas and Krasnov, Dmitry and Schumacher, Jörg}, year={2022} }","ieee":"S. Bhattacharya, T. Boeck, D. Krasnov, and J. Schumacher, “Effects of strong fringing magnetic fields on turbulent thermal  convection,” <i>arXiv:2211.00559</i>. 2022."},"project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}]}