A numerical study on propagation of nonlinear internal waves

Taro Kakinuma, Kei Yamashita, Keisuke Nakayama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Internal waves in a two-layer system are simulated using a set of nonlinear internal-wave equations, which was derived on the basis of a variational principle without any assumptions concerning wave nonlinearity and dispersion. In the cases where long internal waves reflect in a tank, interface displacements obtained by the proposed model with more than two vertically distributed functions of velocity potential are in harmony with those by the Boussinesq-type model, as well as the existing experimental data especially in the wave number. In the intermediate-wave case, the present model shows different results from those through the Boussinesq-type model, which should not be applied to this case without enough consideration of the wave dispersion. Internal waves propagating over a submerged breakwater are also simulated, where the vertical distribution of horizontal velocity below a crest is remarkably distributed when it starts disintegration after passing over the shoulder.

Original languageEnglish
Title of host publicationProceedings of the 5th International Conference on Asian and Pacific Coasts, APAC 2009
PublisherWorld Scientific Publishing Co. Pte Ltd
Pages208-214
Number of pages7
ISBN (Print)9814287989, 9789814287982
Publication statusPublished - 2010 Jan 1
Externally publishedYes
Event5th International Conference on Asian and Pacific Coasts, APAC 2009 - Singapore, Singapore
Duration: 2009 Oct 132009 Oct 16

Publication series

NameProceedings of the 5th International Conference on Asian and Pacific Coasts, APAC 2009
Volume3

Other

Other5th International Conference on Asian and Pacific Coasts, APAC 2009
CountrySingapore
CitySingapore
Period09/10/1309/10/16

ASJC Scopus subject areas

  • Ocean Engineering

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