Settling and dispersion of inertial non-spherical particles in wavy flow
Abstract/Contents
- Abstract
- Motivated by the problem of microplastics in the ocean, we investigated the transport of inertial non-spherical particles by waves and currents. We first experimentally studied the settling of rods, disks, and spheres settling in a flow characterized by linear surface gravity waves. We found that both particle shape and the flow inertia at the length scale of the particle influenced how particles sampled the flow and thereby their settling velocity. We then performed experiments on the dispersion of disks, rods, and cylinders in a wave-current flow and found that the presence waves significantly increased particle dispersion. The magnitude of the increase was a function of particle shape and size. Motivated by these results, we used numerical simulations to examine the impacts of a full set of nondimensional parameters on dispersion in a wave-current flow. We found that no parameters could be discounted, but a time scale ratio between the particle settling velocity and wave transport by Stokes drift had the greatest impact on dispersion. Overall, our results show that both particle and flow properties are important to account for when predicting particle transport in wavy flows.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2023; ©2023 |
| Publication date | 2023; 2023 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Clark, Laura Kathryn |
|---|---|
| Degree supervisor | Koseff, Jeffrey Russell |
| Thesis advisor | Koseff, Jeffrey Russell |
| Thesis advisor | DiBenedetto, MIchelle |
| Thesis advisor | Ouellette, Nicholas (Nicholas Testroet), 1980- |
| Degree committee member | DiBenedetto, MIchelle |
| Degree committee member | Ouellette, Nicholas (Nicholas Testroet), 1980- |
| Associated with | Stanford University, School of Engineering |
| Associated with | Stanford University, Civil & Environmental Engineering Department |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Laura Kathryn Clark. |
|---|---|
| Note | Submitted to the Civil & Environmental Engineering Department. |
| Thesis | Thesis Ph.D. Stanford University 2023. |
| Location | https://purl.stanford.edu/jk924np6780 |
Access conditions
- Copyright
- © 2023 by Laura Kathryn Clark
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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