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奈良女子大学人間文化研究科 博士課程後期2回 梅田早希
位相的カオスを利用した 流体のかき混ぜ 奈良女子大学人間文化研究科 博士課程後期2回 梅田早希
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horse shoe mapを利用したmixing device
Scönfeld, F., Hessel, V. and Hofmann, C., An optimised split-and reconbine micro-mixer with uniform ‘chaotioc’ mixing, Lab Chip 4(2000),
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split-and-recombine (SAR) のmixing の様子
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Stremler-Chenの実験 Stremler, M., Chen, J., Generating topological chaos in lid-driven cavity flow, PHYSICS OF FLUID 19 (2007), —
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Kin-Sakajoのcomputer simulation
Kin, E., Sakajo, T., Efficient topological chaos embeded in the blinking vortex system, Chaos 15(2005), —
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pA type のBSD Kobayashi T. and Umeda, S, Realizing pseudo-Anosov egg beaters with simple mechanisms, Proc. of the Int. Workshop on Knot theory for Sci. Objects, March(2006), , 2007.
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Thiffeault-FinnのBSD Thiffeault,J.L., Finn, M.D., Topology, Braids, and Mixing in Fluids, Math, Phys. and Eng. Sci. 364 (2006),
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hypotrochoid curve
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hypotrochoid curve を利用したBSD
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Example
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Example
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対応するbraid
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0bservation: If it is reducible, lk( ) = lk( ). for any : inside tube :outside tube
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Table of Linking number
1 lk( ) = ( ∈{1, 2, 3, 4}) lk( ) = 0 ( ∈{a, b, c, d})
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実験
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Topological mixing with ghost rods
PHYSICAL REVIEW E73 Topological mixing with ghost rods Gouillart, Thiffeault and Finn 1919
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ghost rods
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Gnerating topological chaos in lid-driven cavity flow
PHYSICS OF FLUID 19 Gnerating topological chaos in lid-driven cavity flow Stremler, Chen
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lid-driven cavity flow
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