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

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

水工模型試驗組

研究成果: Paper › 同行評審

摘要

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 A_r = 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 A_r is less than 1.0.

原文	English
頁面	1159-1170
頁數	12
出版狀態	Published - 2007 1月 1
事件	8th International Conference on the Mediterranean Coastal Environment, MEDCOAST 2007 - Alexandria, Egypt 持續時間: 2007 11月 13 → 2007 11月 17

Conference

Conference	8th International Conference on the Mediterranean Coastal Environment, MEDCOAST 2007
國家/地區	Egypt
城市	Alexandria
期間	07-11-13 → 07-11-17

All Science Journal Classification (ASJC) codes

地理、規劃與發展

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

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.",

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year = "2007",

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T1 - The influence of aspect ratio on vortex evolution induced by a solitary wave propagating over a cavity

AU - Lin, C.

AU - Ho, T. C.

AU - Chang, C. S.

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Y1 - 2007/1/1

N2 - 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.

AB - 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.

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T2 - 8th International Conference on the Mediterranean Coastal Environment, MEDCOAST 2007

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

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