A Singularity-Free Expansion Method for Nonlinear Drift Wave Vortex in Shear Flow
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概要
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In Flasegawa-Mima equation, steady drift wave solutions representing a localized(solitary) vortex in the shear flow are examined by a singularity-free expansionmethod, in which total flow is expanded around the shear flow. It is shown thatsingular terms, caused by the "resonance" between the traveling velocity of thevortex and the shear flow, appear in the expansion of the two-dimensional nonlinearequation for the vortex moving steadily. If a singularity-free conditior? is imposed ona certain order coefficient of the expanded equation, the lower-order coefficients areuniformly bounded while the higher-order coefficients vanish. Analyzing the exactlytruncated equation, we obtain piecewise continuous solutions of Larichev-Reznik'stype and also show the existence of a smooth monopole of solitary vortex in the shearflow in the whole plane.
- 社団法人日本物理学会の論文
- 1992-01-15
著者
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NOZAKI Kazuhiro
Department of Physics, Nagoya University
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Moriguchi Hirofumi
Department Of Physics Nagoya University
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Moriguchi Hirofumi
Department Of Physics Faculty Of Science Nagoya University
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Nozaki Kazuhiro
Departmant Of Physics Nagoya University
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Nozaki Kazuhiro
Department Of Physics Faculty Of Science Nagoya University
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