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期刊论文

RUNUP AND RUNDOWN OF SOLITARY WAVES ON SLOPING BEACHES

林鹏智By Pengzhi Lin Kuang-An Chang and Philip L.-F. Liu Fellow ASCE

JOURNAL OF WATERWAY, PORT, COASTAL, AND OCEAN ENGINEERING, SEPTEMBER/OCTOBER 1999, 247~255,-0001,():

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摘要/描述

This paper presents a combined experimental and numerical effort to study solitary wave runup and rundown on beaches. Both nonbreaking and breaking solitary waves are investigated. A two-dimensional numerical model that solves both mean flow and turbulence is employed in this study. For the nonbreaking solitary wave on a steep slope, numerical results of the present model are verified by experimental data and numerical results obtained from the boundary integral equation method model, in terms of both velocity distribution and free surface profiles. The characteristics of flow patterns during runup and rundown phases are discussed. The vertical variations of the horizontal velocity component are large at some instances, implying that the shallow water approximation may be inaccurate even for the nonbreaking wave runup and rundown. For the breaking solitary wave on a mild slope, numerical results of the present model are compared with experimental data for free surface displacements. The present model is found to be more accurate than the depthaveraged equations models. Using this numerical model, the mean velocity field and turbulence distribution under the breaking wave are discussed.

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版权说明:以下全部内容由林鹏智上传于   2006年07月08日 00时40分45秒,版权归本人所有。

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