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https://hdl.handle.net/20.500.14094/90006059
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2024-04-26
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90006059 (fulltext)
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2.89 MB
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メタデータID
90006059
アクセス権
open access
出版タイプ
Accepted Manuscript
タイトル
Oblique reflection of large internal solitary waves in a two-layer fluid
著者
Nakayama, Keisuke ; Kakinuma, Taro ; Tsuji, Hidekazu
著者ID
A0044
研究者ID
1000060271649
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=c5a2042377aa64d0520e17560c007669
著者名
Nakayama, Keisuke
中山, 恵介
ナカヤマ, ケイスケ
所属機関名
工学研究科
著者名
Kakinuma, Taro
著者名
Tsuji, Hidekazu
収録物名
European Journal of Mechanics - B/Fluids
巻(号)
74
ページ
81-91
出版者
Elsevier Masson SAS
刊行日
2019-04
公開日
2021-05-01
抄録
The oblique reflection of an incident internal solitary wave is investigated using a fully-nonlinear and strongly-dispersive internal wave model. The 3rd order theoretical solution for an internal solitary wave in a two-layer system is used for the incident solitary wave. Two different incident wave amplitude cases are investigated, in which nine and eleven different incident angles are used for the small and large incident amplitude cases respectively. Under both amplitudes, at least for the cases investigated here, relatively smaller incident angles result in Mach reflection while relatively larger incident angles result in regular reflection. Under Mach-like reflection generation of a 'stem' is observed for a certain range of incident angles, in addition to the reflected wave. The stem is found to have, in a certain sense, the characteristics of an internal solitary wave, though the maximum stem wave amplitude is less than four times as large as the original incident internal solitary wave. The stem length is confirmed to increase faster for the larger incident wave amplitude. The maximum amplification factor for the small incident wave is the same as in previous studies. However, the maximum amplification factor for the large incident wave is less than that for the small wave. The results of these calculations are compared with those of the corresponding KP theory and it is found that a lower amplification factor may be a significant characteristic of internal solitary waves.
キーワード
Variational principle
Solitary wave
Interaction
Mach stem
Two-layer system
KP theory
カテゴリ
工学研究科
学術雑誌論文
権利
© 2018 Elsevier Masson SAS.
This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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資源タイプ
journal article
言語
English (英語)
ISSN
0997-7546
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eISSN
1873-7390
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関連情報
DOI
https://doi.org/10.1016/j.euromechflu.2018.10.014
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