Marginal State of Modulational Instability : Note on Benjamin-Feir Instability
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概要
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This paper deals with the marginal state of modttlational instability of a non-linear wave which is governed by a cubic nonlinear Schr5dinger (shortly NS)equation far from the marginal state. Considering the gravity water wave as atypical example for which the coefficient of the nontinear term of the NS equationdoes vanish at the marginal state, we reduce a new governing equation near themarginal state instead of the NS equation. Based on this new equation, theBenjamin-Feir instability of the Stokes wave is f'ound to be enhanced by thehigher order nonlinearity.
- 社団法人日本物理学会の論文
- 1983-12-15
著者
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Kakutani Tsunehiko
Department Of Engineering Mathematics University Of Newcastle Upon Tyne:(present Address) Department
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Michihiro Keiji
Department Of Mechanical Engineering Faculty Of Engineering Science Osaka University
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