基于FVCOM的山东斋堂岛潮流试验场的潮流数值模拟

发布时间：2018-12-19 09:59

【摘要】：随着传统化石能源储量的急剧下降，，全球变暖等环境问题不断涌现，开发利用绿色清洁可再生能源已经迫在眉睫。这个全球性的话题引发了一场能源革命，世界各国进行了各种尝试，其中太阳能和风能已经小有规模，但是依然远远满足不了人类的需求，于是人们将目光投向了海洋，其占地球表面的70%，储藏的能源巨大。我国具有漫长的海岸线以及浩瀚的海域，这些对海洋资源开发具有很大的优势，其中潮流能的开发利用已经逐渐步入正轨。本文以山东省斋堂岛潮流试验场为工程试点，运用潮流数值模型对该区域的潮流能分布及储量进行评估。本文首先对国内外潮流能资源分布及开发现状做出介绍，总结了现在应用广泛的二维三维潮流数值模拟方法和软件，着重介绍了本文主要使用的三维潮流模型FVCOM，从其理论方程，边界条件到适用特点。然后，分类介绍国内外设计的潮流能发电装置，提出了斋堂岛试验场所用的由中国海洋大学设计的水平轴潮流能装置。对于斋堂岛试验场的潮流能评估，碍于实测资料太少，只能选取大小网格嵌套的方法。首先，分别利用FVCOM和ADCIRC模型对斋堂岛外海大区域进行数值计算，依据董家口的实测值验证两种模型的准确度，同时比较分析两种模型的计算结果。然后，根据验证后的潮位数据插值得到小区域试验场开边界的输入条件，利用FVCOM模型计算得到试验场的潮位变化以及流速三维分布。在潮流能装置安放位置，由流速的三维分布积分得到其潮流能能量密度，计算得到一个大潮周期内的潮流能大小，并与常见的评估方法简化公式计算值作比较。本文所用模型未考虑装置布置后对周边潮流的影响，以及后期阵列布放发电装置时相互之间的影响，计算结果仍存在不足，模型需要进一步完善调整。
[Abstract]:With the rapid decline of the reserves of traditional fossil energy, global warming and other environmental problems have been emerging, the development and utilization of green clean and renewable energy has become urgent. This global topic has triggered an energy revolution, and countries around the world have made a variety of attempts, including solar and wind energy, which are already small and still far from meeting the needs of mankind, so people are looking at the oceans. It accounts for 70 percent of the earth's surface and stores huge amounts of energy. China has a long coastline and vast sea area, which has great advantages to the exploitation of marine resources, among which the development and utilization of tidal energy has been gradually on the right track. In this paper, the tidal current distribution and reserves in the area are evaluated by using the tidal current numerical model based on the tidal current test site of Jaitang Island, Shandong Province. This paper first introduces the distribution and development of tidal current energy resources at home and abroad, summarizes the widely used 2D 3D power flow numerical simulation methods and software, and emphatically introduces the 3D power flow model FVCOM, which is mainly used in this paper. From its theoretical equations, boundary conditions to applicable characteristics. Then, the domestic and foreign tidal current power generation devices designed at home and abroad are introduced, and a horizontal axis power flow energy device designed by Ocean University of China is put forward for the Jaitang Island Test site. For the power flow energy assessment of Jaitang Island test site, due to the lack of measured data, the method of nesting large and small grids can only be selected. Firstly, the FVCOM and ADCIRC models are used to calculate the large sea area off Jaitang Island, and the accuracy of the two models is verified according to the measured values of Dong Jiakou. Meanwhile, the results of the two models are compared and analyzed. Then, according to the verified tidal level data interpolation, the input conditions of the open boundary of the test site in a small area are obtained, and the tidal level variation and the three-dimensional velocity distribution of the test site are calculated by using the FVCOM model. The energy density of tidal current is obtained by integrating the three dimensional distribution of flow velocity in a tidal current device, and the magnitude of tidal energy in a spring tide cycle is calculated, and the calculated values are compared with those calculated by the simplified formula of common evaluation methods. The model used in this paper does not take into account the influence of the arrangement of the device on the peripheral power flow and the mutual influence of the later stage of the array layout. The calculation results are still insufficient and the model needs to be further improved and adjusted.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P731.2;P743

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