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Pisma v Zhurnal Tekhnicheskoi Fiziki, 2014, Volume 40, Issue 4, Pages 87–94
(Mi pjtf8087)
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This article is cited in 7 scientific papers (total in 7 papers)
Diagnostics of bubble-mode vortex breakdown in swirling flow in a large-aspect-ratio cylinder
D. V. Kulikova, R. Mikkelsenb, I. V. Naumova, V. L. Okulova a S.S. Kutateladze Institute of Thermophysics, Siberian Division of the Russian Academy of Sciences
b Technical University of Denmark
Abstract:
We report for the first time on the possible formation of regions with counterflow (bubble-mode vortex breakdown or explosion) at the center of strongly swirling flow generated by a rotating endwall in a large-aspect-ratio cylindrical cavity filled with a liquid medium. Previously, the possibility of bubble-mode breakdown was studied in detail for cylindrical cavities of moderate aspect ratio (length to radius ratios up to $H/R\sim$ 3.5), while flows in large-aspect-ratio cylinders were only associated with regimes of self-organized helical vortex multiplets. In the present study, a regime with nonstationary bubble-mode vortex breakdown has been observed in a cylindrical cavity with $H/R$ = 4.5.
Received: 05.09.2013
Citation:
D. V. Kulikov, R. Mikkelsen, I. V. Naumov, V. L. Okulov, “Diagnostics of bubble-mode vortex breakdown in swirling flow in a large-aspect-ratio cylinder”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 40:4 (2014), 87–94; Tech. Phys. Lett., 40:2 (2014), 181–184
Linking options:
https://www.mathnet.ru/eng/pjtf8087 https://www.mathnet.ru/eng/pjtf/v40/i4/p87
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