波能测试区波浪运动数学模型的研究

发布时间：2018-06-28 11:25

本文选题：海洋能试验场 + 波浪场　；参考：《天津大学》2014年硕士论文

【摘要】：传统化石能源的利用对生态环境造成危害,以及未来将要面临能源短缺和资源枯竭,使得可再生能源能得到越来越多的重视,它具有使用清洁、不会枯竭等特性,其中分布广泛、存储量大的海洋能属于清洁能源,对海洋能进行开发利用是世界发展的趋势和关键。在海洋能中,波浪能的理论利用量和实际开发量最大,对波浪能开发技术进行研究能够有效地解决资源耗尽和生态恶化等问题。为了检测和评估各海洋能技术的研发,确保研发技术的可行性,海洋能试验与测试场建立是非常有必要的。由于海域面积的有限性,如何在有限的范围内尽可能放置多的装置,提高海域的使用效率,减少海域的占用,则需要考虑装置对波浪场的影响距离和影响面积,为装置的合理布局提供科学的依据。根据N-S方程,沿水深对三维流体进行垂向积分,系统地推导了二维Boussinesq方程。以二维Boussinesq方程为基本控制方程,采用全隐式差分的离散格式和正方形网格,建立了平面二维波浪数学模型,采用追赶法进行求解,提出了可以模拟线性波浪的垂直入射和斜向入射边界条件的控制方法,计算模拟了各种波况下的波浪场。将建立的波浪模型应用于大万山波浪试验场,研究大万山岛南部波浪能测试区中泊位运行时被测发电装置对周围波浪场的水动力影响,模拟线性波在计算海域的运动传播,以及装置无锚固时在波浪中的自由运动过程,装置锚固时对波浪场的影响,定性地分析了不同潮位、波高、波周期下的波浪场。根据试验场中的实际情况,分别模拟了波能有无衰减的波浪场,统计了各计算方案中装置对波浪场的影响距离和影响面积。
[Abstract]:The use of traditional fossil energy is harmful to the ecological environment and will be faced with energy shortage and resource depletion in the future, which makes renewable energy get more and more attention. The oceanic energy with wide distribution and large storage capacity belongs to clean energy. The development and utilization of oceanic energy is the trend and key of the world development. In the ocean energy, the theoretical utilization and actual exploitation of wave energy are the largest. The study of wave energy development technology can effectively solve the problems of resource depletion and ecological deterioration. In order to detect and evaluate the research and development of marine energy technology and ensure the feasibility of research and development, the establishment of ocean energy test and test field is very necessary. Because of the limitation of the sea area, how to place as many devices as possible in the limited range, improve the efficiency of the sea area, reduce the occupation of the sea area, need to consider the influence distance and the influence area of the device on the wave field. It provides a scientific basis for the reasonable layout of the device. According to the N-S equation and the vertical integration along the water depth, the two-dimensional Boussinesq equation is derived systematically. Taking the two-dimensional Boussinesq equation as the basic governing equation, the two-dimensional wave mathematical model is established by using the fully implicit difference discrete scheme and the square grid, and is solved by the catch-up method. A control method which can simulate the boundary conditions of vertical and oblique incidence of linear waves is proposed and the wave fields under various wave conditions are calculated and simulated. The wave model is applied to the wave test site in the south of Dawanshan Island to study the hydrodynamic effect of the berth in the wave energy test area around the wave field, and to simulate the motion and propagation of the linear wave in the calculated sea area. The free motion of the device in waves without anchoring and the effect of anchoring on the wave field are analyzed qualitatively. The wave fields at different tide levels, wave heights and wave periods are analyzed qualitatively. According to the actual situation in the test site, the wave field with or without attenuation of wave energy is simulated, and the influence distance and area of the device on the wave field are calculated.
【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】：P743.2;P731.22

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