梳式防波堤兼作波能发电装置的设计与研究

发布时间：2018-04-28 02:14

本文选题：梳式防波堤 + 波能发电　；参考：《天津大学》2014年硕士论文

【摘要】：将波能发电系统和防波堤结合起来会使发电系统具有成本上的优势，同时发电系统的建造，运行，维护会十分的方便。本文在对梳式防波堤进行了稳定性测试的基础上，对该防波堤展开了波能发电装置的设计和研究。通过对国内外已经较为成熟的各种类型的波能发电技术的介绍和对比，确定了适合设置在本研究中防波堤上的波浪发电技术为振荡水柱式和水力透平式。利用计算流体力学软件FLOW-3D建立了数值波浪水槽，通过调整，得到了和实验室水槽吻合较好的波浪条件。在设置好的数值波浪水槽中进行了多组测试，确定了水力透平式波能发电装置转化能量效率最高的断面，但是转化效率较低。通过物理模型试验对数值模型计算的最优断面进行了验证，对转化性能进行了测试。两维的数值模型导致数值模型较物理模型试验结果稍有区别，波能转化率和数值模型计算的结果十分接近。不同周期波浪作用下的性能测试表明决定水力透平式波能转换装置转化性能的主要参数是流体通过透流孔流线的长短。不同水位条件下的性能测试表明，上部斜坡和波浪表面的相互作用对波能转化也起到了至关重要的作用。用数值模型对振荡水柱式波能发电装置进行了设计和测试。通过自振分析得出气室的开口位置。数值水槽测试结果表明，在相对开孔率保持不变的情况下，气室宽度较小的模型转化效率较高。振荡水柱式波能发电装置中水柱振荡的幅度可以看作是波能转化效率的一个指标。
[Abstract]:The combination of wave power generation system and breakwater will make the power generation system have the advantage of cost, at the same time, the construction, operation and maintenance of the power generation system will be very convenient. Based on the stability test of the comb breakwater, the design and research of the wave power generation device are carried out in this paper. Through the introduction and comparison of various types of wave power generation technologies at home and abroad, it is determined that the wave power generation technologies suitable for the breakwater in this study are oscillatory water column type and hydraulic turbine type. The numerical wave flume was established by using the computational fluid dynamics software FLOW-3D, and the wave conditions which were in good agreement with the laboratory flume were obtained by adjusting the numerical wave flume. Several tests were carried out in a set of numerical wave flume to determine the section with the highest conversion energy efficiency of the hydraulic turbine wave power generation device, but the conversion efficiency was relatively low. The optimum section calculated by the numerical model is verified by the physical model test, and the conversion performance is tested. The two-dimension numerical model results in a slight difference between the numerical model and the physical model test results, and the wave energy conversion rate is very close to that of the numerical model. The experimental results show that the main parameter determining the conversion performance of the hydraulic turbine wave-energy converter is the length of the flow line through the permeable hole. The performance tests at different water levels show that the interaction between the upper slope and the wave surface also plays an important role in the wave energy conversion. A numerical model is used to design and test the oscillating water column wave energy generator. The opening position of the chamber is obtained by natural vibration analysis. The results of numerical flume test show that the conversion efficiency of the model with smaller chamber width is higher when the relative opening rate remains constant. The amplitude of water column oscillation can be regarded as an indicator of the efficiency of wave energy conversion.
【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;TM612

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