On local and convective accelerations in steep wave events

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• 作者：Atle Jensen ; Didier Clamond ; Morten Huseby ; John Grue
• 关键词：Water waves ; Accelaration ; PIV
• 刊名：Ocean Engineering
• 出版年：2007
• 期刊代码：133_00298018
• 类别：et
• 出版时间：March 2007
• 卷：34
• 期：3-4
• 页码：426-435
• 文件大小：976 K

摘要

The local and convective accelerations of steep irregular wave events have been investigated. These properties are measured by a two-camera PIV technique. Furthermore, the experiments are compared with two different theories including a fully nonlinear and a simplified analytical model. An important result is that the convective term is of the same order of magnitude and of opposite sign as the local acceleration. The convective acceleration term can therefore not be neglected in acceleration and force estimates.