The influence of aspect ratio on vortex evolution induced by a solitary wave propagating over a cavity

C. Lin, T. C. Ho, C. S. Chang

Research output: Contribution to conferencePaper

Abstract

The vortex shedding process induced by a solitary wave propagating over a symmetric cavity was studied experimentally, using the particle image velocimetry (PIV) technique and flow visualization technique. The wave height of the solitary wave is 1.4 cm, and the wave height (H) to water depth (h) of the experiment is 0.2. The ratio of the length to the depth of the cavity, A r, was defined as aspect ratio. The vortex shedding processes were investigated particularly for Ar = 0.5 using the flow visualization technique and PIV. The quantitative characteristics of shedding primary vortex in the cavity, such as the trajectories of the vortex core and jet like flow, vorticity of the primary vortex core, and the circulation of the primary vortex, were studied in detail. Finally, it is found that all the characteristics change obviously while Ar is less than 1.0.

Original languageEnglish
Pages1159-1170
Number of pages12
Publication statusPublished - 2007 Jan 1
Event8th International Conference on the Mediterranean Coastal Environment, MEDCOAST 2007 - Alexandria, Egypt
Duration: 2007 Nov 132007 Nov 17

Conference

Conference8th International Conference on the Mediterranean Coastal Environment, MEDCOAST 2007
CountryEgypt
CityAlexandria
Period07-11-1307-11-17

All Science Journal Classification (ASJC) codes

  • Geography, Planning and Development

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    Lin, C., Ho, T. C., & Chang, C. S. (2007). The influence of aspect ratio on vortex evolution induced by a solitary wave propagating over a cavity. 1159-1170. Paper presented at 8th International Conference on the Mediterranean Coastal Environment, MEDCOAST 2007, Alexandria, Egypt.