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Numerical study of harbor oscillations induced by water surface disturbances within harbors of constant depth

机译：等深度港口内水面扰动引起港口振动的数值研究

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摘要

Oscillations within an enclosed rectangular harbor and a set of partially opened rectangular harbors with various widths and locations of entrance induced by cubic water surface disturbances with different initial heights and locations are simulated using FUNWAVE 2.0 model. The height and the location of the cubic water surface disturbance refer to its thickness and its relative horizontal position inside the harbor, respectively. The water depth inside and outside all harbors is set to be constant. The aim of this paper is to investigate how different heights and locations of the water surface disturbance and various widths and locations of harbor entrance affect the oscillations inside the harbor. Results show that for the given harbors and the range of the initial height of water surface disturbance studied in this paper, all the response amplitudes of various eigenfrequencies increase linearly with the initial height of water surface disturbance. The variations of the initial location of water surface disturbance along the backwall and sidewall of the harbor can significantly change the transverse and longitudinal oscillation patterns of various modes, respectively. The effects of the variations of the width and location of the harbor entrance on the response amplitudes of various resonant modes both depend on the relative positions of their node lines and antinode lines to the harbor entrance.
机译：使用FUNWAVE 2.0模型，模拟了由不同初始高度和位置的立方水面扰动引起的封闭矩形海港和一组具有不同宽度和入口位置的部分开放矩形海港内的振动。三次水面扰动的高度和位置分别是指其厚度及其在港口内的相对水平位置。所有港口内部和外部的水深设置为恒定。本文的目的是研究水面扰动的不同高度和位置以及港口入口的不同宽度和位置如何影响港口内部的振荡。结果表明，对于给定的港口和本文研究的水面扰动初始高度范围，各种特征频率的所有响应幅度均随水面扰动初始高度线性增加。沿港口后壁和侧壁的水面扰动初始位置的变化可以分别显着改变各种模式的横向和纵向振荡模式。港口入口的宽度和位置的变化对各种共振模式的响应幅度的影响都取决于它们的节点线和波腹线相对于港口入口的相对位置。

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