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海岸及海洋工程中使用的波高参数,根据三类定义基础(即波高统计、能量及单色波)分为三种类型。对大多数工程设计来说,每一类中的诸参数都可以相互转换,但不同类参数间却难以相互转换,尤其是在波浪近于破碎的浅水区,这种转换就更难了。常用的参数“有效波高”习惯上是用波高统计得到的,但现代的许多估计都是根据波能计算的。本文提出一种将统计法得到的有效波高与能量法得到的有效波高相关联的简单经验方法。这种方法是根据 CERC(海岸工程研究中心)实验室中1:30斜坡的水槽实验资料、两组现场观测资料以及流函数理论得到的。由于在某些实验条件下,用两种方法估计的有效波高值可能相差40%以上,所以工程师们应当弄清有效波高的估计依据。
The wave height parameters used in coastal and marine engineering are divided into three types based on the definition of the three categories (ie wave height statistics, energy and monochromatic waves). For most engineering designs, the parameters in each of these classes are interchangeable, but it is difficult to switch between different classes of parameters, especially in shallow, shallow waves where the waves are shattered. Commonly used parameters “effective wave height ” is customarily obtained by wave height statistics, but many modern estimates are based on wave energy calculations. This paper presents a simple empirical method that relates the effective wave height obtained from the statistical method to the effective wave height obtained from the energy method. This method is based on experimental data from a sink at 1:30 slope in the CERC (Coastal Engineering Research Center) laboratory, two field observations, and a stream function theory. Since the effective wave height values estimated by the two methods may differ by more than 40% under some experimental conditions, engineers should be able to find out the basis for estimating the effective wave height.