Abstract
We explore the classical problem of lee wave generation by a stationary isolated three-
dimensional obstacle in a uniform low-Froude-number stratified flow. By separating the
permanent waves produced into three distinct categories, we compare detailed experimental
measurements with theoretical predictions. We pay particular attention to the time-dependent
establishment of the wave field and the orientation of the fan of lee waves that is established.
As seen by previous authors, we find that the uniform flow can be divided into two regions:
an essentially two-dimensional flow around the base of the obstacle and a wave-generating
flow over the top portion of the obstacle. We show that quantitative agreement between
experimental observations and predictions of linear wave theory is only possible if we take
into account a small slope across the obstacle of the surface separating the quasi-two-
dimensional flow around the base of the obstacle and the wave-generating flow over the top
of the obstacle.
Original language | English |
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Title of host publication | Proceedings of VII International Symposium on Stratified Flows, 2011 |
Editors | A Cenedese, S Espa, R Purini |
Pages | 1162 |
Number of pages | 1 |
Publication status | Published - Aug 2011 |
Event | 7th International Symposium on Stratified Flows - Rome, Italy Duration: 22 Aug 2011 → 26 Aug 2011 |
Conference
Conference | 7th International Symposium on Stratified Flows |
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Country/Territory | Italy |
City | Rome |
Period | 22/08/11 → 26/08/11 |