NUMERICAL ANALYSES ON PROPAGATION OF NONLINEAR INTERNAL WAVES

Kei Yamashita; Taro Kakinuma; Keisuke Nakayama

doi:10.9753/icce.v32.waves.24

No. 32 (2010), Waves

No. 32 (2010)

NUMERICAL ANALYSES ON PROPAGATION OF NONLINEAR INTERNAL WAVES

Waves

https://doi.org/10.9753/icce.v32.waves.24

Published 2011-02-01

Kei Yamashita⁺⁻
Taro Kakinuma⁺⁻
Keisuke Nakayama⁺⁻

Kei Yamashita

Kagoshima University

Taro Kakinuma

Kagoshima University

Keisuke Nakayama

Kitami Institute of Technology

Proceedings of the 32nd International Conference

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Keywords

Internal wave
two-layer system
wave breaking
variational principle
submerged breakwater

How to Cite

Yamashita, K., Kakinuma, T., & Nakayama, K. (2011). NUMERICAL ANALYSES ON PROPAGATION OF NONLINEAR INTERNAL WAVES. Coastal Engineering Proceedings, 1(32), waves.24. https://doi.org/10.9753/icce.v32.waves.24

Abstract

A set of nonlinear surface/internal-wave equations, which have been derived on the basis of the variational principle without any assumptions concerning wave nonlinearity and dispersion, is applied to compare numerical results with experimental data of surface/internal waves propagating through a shallow- or a deep-water region in a tank. Internal waves propagating over a submerged breakwater or a uniformly sloping beach are also simulated. The internal progressive wave shows remarkable shoaling when the interface reaches the critical level, after which physical variables including wave celerity become unstable near the wave-breaking point. In the case of the internal-wave trough reflecting at the vertical wall, the vertical velocities of water particles in the vicinity of the interface are different from that of the moving interface at the wall near the wave breaking, which means that the kinematic boundary condition on the interface of trough has been unsatisfied.

https://doi.org/10.9753/icce.v32.waves.24

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References

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Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.

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NUMERICAL ANALYSES ON PROPAGATION OF NONLINEAR INTERNAL WAVES

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