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Three-dimensional visualization of columnar vortices in rotating Rayleigh-Benard convection

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Title: Three-dimensional visualization of columnar vortices in rotating Rayleigh-Benard convection
Authors: Fujita, Kodai Browse this author
Tasaka, Yuji Browse this author →KAKEN DB
Yanagisawa, Takatoshi Browse this author
Noto, Daisuke Browse this author
Murai, Yuichi Browse this author →KAKEN DB
Keywords: Rotating convection
Vortex structure
Issue Date: Aug-2020
Publisher: Springer
Journal Title: Journal of visualization
Volume: 23
Issue: 4
Start Page: 635
End Page: 647
Publisher DOI: 10.1007/s12650-020-00651-0
Abstract: To enrich the three-dimensional experimental details of vortex structures in rotating Rayleigh-Benard convection, we established a technique visualizing three-dimensional vortex structures using scanning planar particle image velocimetry. Experiments were performed at fixed Rayleigh number, Ra=1.0x10(7) to 1.0x10(8), corresponding to convective Rossby numbers from 0.1 <= Ro <= 0.5 at which gradual transition between vortical plumes and convective Taylor columns regime is observed. Stream function distributions calculated from horizontal velocity vector fields visualize the vortex structure formed in the regimes. As quantitative information extracted from the visualized structures, distances between vortices recognized on the distributions show a good agreement with that evaluated by a theory. With the accumulated planar stream function distributions and vertical velocity component calculated from the horizontal velocity vectors, the three-dimensional representations of vortices indicate that quasi-two-dimensional columnar vortices straighten in the vertical direction with increasing Ta.
Rights: This is a post-peer-review, pre-copyedit version of an article published in Journal of visualization. The final authenticated version is available online at:
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 田坂 裕司

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