Unified Theory Based on Parameter Scaling for Derivation of Nonlinear Wave Equations in Bubbly Liquids
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- KANAGAWA Tetsuya
- Division of Mechanical and Space Engineering, Hokkaido University, Research Fellow of the Japan Society for the Promotion of Science
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- YANO Takeru
- Department of Mechanical Engineering, Osaka University
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- WATANABE Masao
- Division of Mechanical and Space Engineering, Hokkaido University
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- FUJIKAWA Shigeo
- Division of Mechanical and Space Engineering, Hokkaido University
抄録
We propose a systematic derivation method of the Korteweg-de Vries-Burgers (KdVB) equation and nonlinear Schrödinger (NLS) equation for nonlinear waves in bubbly liquids on the basis of appropriate choices of scaling relations of physical parameters. The basic equations are composed of a set of conservation equations for mass and momentum and the equation of bubble dynamics in a two-fluid model. The scaling of parameters is related to the wavelength, frequency, propagation speed, and amplitude of waves concerned. With the help of the method of multiple scales, appropriate choices of the parameter scaling allow us to derive various nonlinear wave equations systematically from a set of basic equations. The result shows that the one-dimensional nonlinear propagation of a long wave with a low frequency is described by the KdVB equation, and that of an envelope of a carrier wave with a high frequency by the NLS equation. Thus, we establish a unified theory of derivation of nonlinear wave equations in bubbly liquids.
収録刊行物
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- Journal of Fluid Science and Technology
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Journal of Fluid Science and Technology 5 (3), 351-369, 2010
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390282680223474816
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- NII論文ID
- 130000303623
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- ISSN
- 18805558
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可