A Numerical Solution for the Coexisting Field of Surface and Internal Solitary Waves

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Taro Kakinuma
Taro Kakinuma
σ
Kei Yamashita
Kei Yamashita
α Kagoshima University Kagoshima University

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A Numerical Solution for the Coexisting Field of  Surface and Internal Solitary Waves

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Abstract

The numerical solutions for the coexisting fields of surface and internal solitary waves have been obtained, where the set of nonlinear equations based on the variational principle for steady waves are solved using the Newton-Raphson method. The relative phase velocity of surface-mode solitary waves is smaller in the coexisting fields of surface and internal solitary waves than in the cases without the coexistence of internal waves. The relative phase velocity of internal-mode solitary waves is also smaller in the coexisting fields of surface and internal solitary waves than in the cases without surface waves. The interfacial position of an internalmode internal solitary wave in a coexisting field of surface and internal waves can exceed the critical level determined in the corresponding case without a surface wave. The wave height ratio between internal-mode surface and internal solitary waves is smaller than the corresponding linear shallow water wave solution, and the difference increases, as the relative wave height of internal-mode internal solitary waves is increased.

References

10 Cites in Article
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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Taro Kakinuma. 2020. \u201cA Numerical Solution for the Coexisting Field of Surface and Internal Solitary Waves\u201d. Global Journal of Research in Engineering - E: Civil & Structural GJRE-E Volume 20 (GJRE Volume 20 Issue E3): .

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

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GJRE-E Classification: FOR Code: 090599
Version of record

v1.2

Issue date

September 25, 2020

Language
en
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The numerical solutions for the coexisting fields of surface and internal solitary waves have been obtained, where the set of nonlinear equations based on the variational principle for steady waves are solved using the Newton-Raphson method. The relative phase velocity of surface-mode solitary waves is smaller in the coexisting fields of surface and internal solitary waves than in the cases without the coexistence of internal waves. The relative phase velocity of internal-mode solitary waves is also smaller in the coexisting fields of surface and internal solitary waves than in the cases without surface waves. The interfacial position of an internalmode internal solitary wave in a coexisting field of surface and internal waves can exceed the critical level determined in the corresponding case without a surface wave. The wave height ratio between internal-mode surface and internal solitary waves is smaller than the corresponding linear shallow water wave solution, and the difference increases, as the relative wave height of internal-mode internal solitary waves is increased.

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A Numerical Solution for the Coexisting Field of Surface and Internal Solitary Waves

Taro Kakinuma
Taro Kakinuma Kagoshima University
Kei Yamashita
Kei Yamashita

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