Ocean Wave Model and Wave Drift Caused by the Asymmetry of Crest and Trough

• 作者: Hui-Feng Li Jin-Liang Wang
• 来源期刊: 海洋科学期刊(英文)
• 学科: 数学
• 关键词: WAVE Model STOKES DRIFT Ocean Surface WAVE Gerstner WAVE WAVE Slope BREAKING Criteria
• 年，卷（期）: 2017,（3）
• 页码范围: 343-356
• 页数: 14页
• 分类号: O1

摘要

It follows from the review on classical wave models that the asymmetry of crest and trough is the direct cause for wave drift. Based on this, a new model of Lagrangian form is constructed. Relative to the Gerstner model, its improvement is reflected in the horizontal motion which includes an explicit drift term. On the one hand, the depth-decay factor for the new drift accords well with that of the particle’s horizontal velocity. It is more rational than that of Stokes drift. On the other hand, the new formula needs no Taylor expansion as for Stokes drift and is applicable for the waves with big slopes. In addition, the new formula can also yield a more rational magnitude for the surface drift than that of Stokes.