Long Internal Waves of Large Amplitude in a Two-Layer Fluid
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概要
- 論文の詳細を見る
Long internal waves of large amplitude are studied for a two-layer fluid with a rigidupper boundary. Steady periodic waves are calculated numerically assuming thatmean velocities for each layer are equal. In the limit of long wavelength, the wavesasymptote to either of a non-dissipative internal bore or a solitary wave of elevationor depression. The conditions for the appearance of each solution are obtainednumerically, and one of the conditions is complemented by an analysis based on theconservations of mass, momentum and wave energy. Then it is shown that the infer-face for the solitary wave of large amplitude is not allowed to cross a critical levelsimilarly to the case of small amplitude. Here the critical level is defined by tjedistance 'Ah/(I*?) from the bottom, and h is the interval between two boun-daries, A =p./p. and p. and p. are densities of upper and lower layers. This resultgives a criterion for the largest amplitude of a solitary wave.
- 社団法人日本物理学会の論文
- 1986-01-15
著者
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Oikawa Masayuki
Research Information Center Institute Of Plasma Physics Nagoya University:research Institute For App
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Funakoshi Mitsuaki
Research Institute For Applied Mechanics Kyushu University
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