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Nonstationary rotation of spiral waves: Three-dimensional effect
Affiliation:1. Central Glass & Ceramic Research Institute, Council of Scientific and Industrial Research, Kolkata 700032, India;2. Department of Physics, Bengal Engineering & Science University, Howrah 711103, India;3. Institute for Plasma Research, Gandhinagar 302428, India;1. Hanoi Pedagogical University No.2, Xuan Hoa, Vinh Phuc, Vietnam;2. Hanoi National University of Education, 132 Xuan Thuy, Ha Noi, Vietnam;3. Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Ha Noi, Vietnam;1. Department of Mathematics, University of Michigan, Ann Arbor, MI 48109, USA;2. Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109, USA;3. Department of Physics & Center for the Study of Complex Systems, University of Michigan, Ann Arbor, MI 48109, USA
Abstract:Nonstationary rotation of spiral waves was studied in experiments with the chemical active medium (the Belousov-Zhabotinsky reaction). It was shown that nonstationarity in some cases is a result of nonuniformity of the reaction throughout the solution depth due to nonuniform saturation with oxygen from the surface to bottom of the solution. Numerical experiments confirm the experimental data. It was shown numerically that this type of nonuniformity can lead to nonstationary rotation of spiral waves.
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