浅水环境下波浪能能流密度计算方法研究

江兴杰; 杨永增; 王道龙; 孙盟

浅水环境下波浪能能流密度计算方法研究

1.
中国海洋大学海洋环境学院, 山东青岛 266061;国家海洋局第一海洋研究所海洋环境与数值模拟研究室, 山东青岛 266061
2.
国家海洋局第一海洋研究所海洋环境与数值模拟研究室, 山东青岛 266061

基金项目: 国家海洋局海洋可再生能源专项资金(GHME2011ZC07);国家海洋局青年基金(2012245)。

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出版历程
- 收稿日期: 2014-12-26
- 修回日期: 2015-04-26

Study of wave power density computation in finite depth

1.
College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266061, China;Key Lab of Marine Science and Numerical Modeling, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
2.
Key Lab of Marine Science and Numerical Modeling, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China

摘要

摘要: 本文列举了3种波浪能能流密度计算方法,通过实测资料和数值模拟的实验,分析了3种方法在浅水环境中的适用性。分析得知,定义方法对浅水环境中的海浪特征考虑最为周全,计算结果最准确,但强烈依赖海浪谱的存在,适用面较窄;经验方法仅依赖常规海浪参数,对各种基础资料几乎都适用,但对波能能流密度的估计往往偏低,且不能明显反应出地形抬升对波能能流密度的汇聚效应;修正方法考虑了浅水的影响,通过适当的选取参数,可以给出较准确的结果,但对于大的波能能流密度值存在过高估计的问题。3种计算方法各有优劣,可以根据实际需要适当选择。
- 波浪能能流密度 /
- 浅水 /
- 群速度 /
- 资源评估
Abstract: Experiments based on observational data and numerical simulation were carried out in this study to analyze the applicability of three different computational methods of wave power density in finite water depth. From the comparison we conclude that,the deterministic method fully considering the features of waves in finite depth yields the most accurate results,but it has a relatively narrow range of application because it strongly depends on the existence of wave spectrum; the experimental method only depends on regular wave parameters and is applicable for almost all of the basic data,but it yields the results a little lower than the deterministic method and cannot obviously describe the convergence effect of wave power density due to a uplift of the seabed; the correctional method considering the effects of finite depth can yield very accurate results if a proper parameter has been chosen,but it may overate those places with high values. Each one of the three methods has both merits and defects respectively,a proper choice is needed before taking into practice.
- wave power density /
- finite depth /
- group velocity /
- resource assessment

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