Characteristics of bolus formation and propagation from breaking internal waves on shelf slopes
Abstract/Contents
- Abstract
- A series of laboratory experiments was conducted to study the formation of internal boluses through the run-up of periodic internal wave-trains on a uniform slope/shelf topography in a two-layer stratified fluid system. In the experiments, the forcing parameters of the incident waves (wave amplitude and frequency) are varied for a constant slope angle and layer depths. Simultaneous particle image velocimetry (PIV) and planar laser-induced fluorescence (PLIF) measurements are used to calculate high resolution, two-dimensional velocity and density fields. Over the range of wave forcing conditions, four bolus formation types were observed: backward overturning into a coherent bolus, top breaking into a turbulent bolus, top breaking into a turbulent surge, and forward breaking into a turbulent surge. Wave forcing parameters, including a wave Froude number Fr, a wave Reynolds number Re, and a wave steepness parameter ka0, are used to relate initial wave forcing to a dominant bolus formation mechanism. Bolus characteristics, including the bolus propagation speed and turbulent components, are also related to wave forcing. Results indicate that for Fr > 0.20 and ka0 > 0.40, the generated boluses become more turbulent in nature. As wave forcing continues to increase further, boluses are no longer able to form.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2016 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Moore, Christine Diane |
|---|---|
| Associated with | Stanford University, Department of Civil and Environmental Engineering. |
| Advisor | Koseff, Jeffrey Russell |
| Thesis advisor | Koseff, Jeffrey Russell |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Christine Diane Moore. |
|---|---|
| Note | Submitted to the Department of Civil and Environmental Engineering. |
| Thesis | Thesis (Engineering)--Stanford University, 2016. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2016 by Christine Diane Moore
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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