Abstract
We report the formation of quasi-steady beaches and dunes via breaking waves in our tabletop ‘Hele-Shaw’ beach experiment. Breaking waves are generated by a wave maker, and zeolite particles act as sand. The tank is narrow, just over one-particle diameter wide, creating a quasi-2D set-up. Classical breaker types are observed on a time-scale of about a second. Beach formation under breakers occurs on a longer time-scale, and is a matter of minutes for a range of mono-chromatic wave frequencies. Alternating the wave maker motion between two frequencies generally leads to beach formation but occasionally to formation of a stable dune with water on either side. Finally, the Hele-Shaw configuration explored here experimentally lends itself to multi-scale modeling of beach dynamics.
| Original language | English |
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| Title of host publication | Proceedings 3rd International Symposium on Shallow Flows (ISSF) |
| Subtitle of host publication | June 4-6, 2012 University of Iowa, Iowa City, IA, USA |
| Place of Publication | Iowa City, IA |
| Publisher | IIHR |
| Pages | 1-10 |
| Number of pages | 10 |
| Publication status | Published - Jun 2012 |
| Event | 3rd international Symposium on Shallow Flows, ISSF 2012 - Iowa City, United States Duration: 3 Jun 2012 → 6 Jun 2012 Conference number: 3 |
Conference
| Conference | 3rd international Symposium on Shallow Flows, ISSF 2012 |
|---|---|
| Abbreviated title | ISSF |
| Country | United States |
| City | Iowa City |
| Period | 3/06/12 → 6/06/12 |
Keywords
- Multiphase beach dynamics
- Breaking waves
- Mathematical Hele-Shaw set-up