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| Content Provider | Springer Nature Link |
|---|---|
| Author | Chen, Cheng Yuan |
| Copyright Year | 2009 |
| Abstract | Experiments were carried out in a wave flume to examine the propagation of depression-type internal solitary waves (ISWs) over a submerged triangular-shaped obstacle. We observed the distortion and breaking of the ISW depression in a two-layer stratified fluid system as induced by the obstacle on the bottom. Physical factors, such as the amplitude of the wave, the thickness of the two layers, and the height of the submerged obstacle were utilized in our analysis of the wave–obstacle interaction. Wave breaking was determined in relation to input parameters arranged before the experimental runs. A classification scheme based on the blockage parameter ζ was proposed. The various degrees of ISW-obstacle interaction were visually classified with three schematic forms (ζ < 0.55 for a weak encounter; 0.55 < ζ < 0.7 for a moderate encounter; and 0.7 < ζ for wave breaking). Furthermore, the reflection and transmission coefficients were utilized to explore the resultant influence on changes in amplitude and energy of an ISW. The wave characteristics (e.g., amplitude-based wave reflection, energy-based reflection, amplitude-based transmission, and energy-based transmission) during the wave–obstacle interaction showed an approximately linear relation with the blockage parameter. Influenced by the submarine obstacle, the transmitted waves were found to always consist of a leading pulse (solitary wave) followed by a dispersive wave train. Moreover, due to bottom friction the energy budget of the leading pulse was reduced by a factor of at least 5% which could approach 50% in cases with strong breaking. |
| Starting Page | 499 |
| Ending Page | 512 |
| Page Count | 14 |
| File Format | |
| ISSN | 09484280 |
| Journal | Journal of Marine Science and Technology |
| Volume Number | 14 |
| Issue Number | 4 |
| e-ISSN | 14378213 |
| Language | English |
| Publisher | Springer Japan |
| Publisher Date | 2009-09-02 |
| Publisher Place | Japan |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Internal solitary waves Blockage parameter Wave breaking Classification scheme Wave–obstacle interaction Mechanical Engineering Offshore Engineering Engineering Design Engineering Fluid Dynamics Automotive Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Oceanography Ocean Engineering Mechanics of Materials Mechanical Engineering |
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