【摘要】：能源是人類生存和發(fā)展的不可缺少的三大物質(zhì)基礎之一。工業(yè)革命以來，人類社會的不斷進步，而能源的消耗劇增、生態(tài)環(huán)境受到嚴重的破壞。為了解決能源短缺及生態(tài)環(huán)境惡化問題，世界各國都陸續(xù)探索研究無污染、儲量大、分布廣的波浪能，開發(fā)出各種波浪能發(fā)電裝置。 論文闡述了國內(nèi)外波浪發(fā)電裝置的研究現(xiàn)狀，并分析了各種波浪發(fā)電裝置的工作原理與特點。依據(jù)波浪能轉(zhuǎn)換原理提出了一種新型的球形擺式波浪發(fā)電裝置，分析了該裝置的發(fā)電原理，并通過AQWA對波浪發(fā)電裝置進行模擬仿真與優(yōu)化。本文的主要內(nèi)容： （1）基于微幅波理論與入射波的勢函數(shù)基礎上，求出水質(zhì)點的速度、加速度以及運動軌跡等；并介紹AQWA水動力學軟件的一些理論知識，浮體響應頻域運動方程與時域運動方程。 （2）根據(jù)波浪轉(zhuǎn)換原理提出了一種新型的球形擺式波浪發(fā)電裝置，并介紹了其工作原理與優(yōu)點�；诟＝ㄖ苓吅Ｓ虻牟ɡ速Y源分布，按照弗汝德－克雷洛夫假定法理論對該裝置進行了水平方向的波浪力分析。 （3）采用AQWA水動力學軟件對球形擺式波能發(fā)電裝置進行模擬仿真。在同一海況下模擬計算，得出球形浮體的運動規(guī)律，表明了該裝置工作的可行性與周期性；并得出了浮體RAO值和水動力參數(shù)等。并將發(fā)電裝置在不同的波況下數(shù)值模擬，探究球形浮體擺角與波浪參數(shù)的關(guān)系；通過模擬仿真知波浪波高是影響波形圖振幅的主要因素，波高越大，球形浮體的擺角范圍越大；周期是影響球形浮體響應快慢的因素，周期越小，響應越快，擺角的范圍越大；波向是影響球形浮體是否能穩(wěn)定擺動（做功）的主要因素，平均波向與該發(fā)電裝置的任意中線成0角是系統(tǒng)的最佳運行角度。 （4）在波浪參數(shù)一樣的情況下，對球形浮體之間的距離、吃水深度與浮體半徑進行了優(yōu)化。發(fā)現(xiàn)球形浮體之間的距離、浮體的大小是浮體之間相互作用強弱的主要因素；吃水深度主要是裝置的球形浮體擺角是否穩(wěn)定，實現(xiàn)穩(wěn)定發(fā)電的主要因素；輻射阻尼和附加質(zhì)量隨著排水體積的增大而增大。該裝置在浮體之間的距離為6m、吃水深度為0.9m，，半徑為2m，球形浮體的整體擺動效果好，能捕獲更多的波浪能。 （5）論文研究球形擺式波浪發(fā)電裝置的設計、模擬仿真與優(yōu)化為物理樣機的制作及實際應用提供理論依據(jù)。
[Abstract]:Energy is one of the three indispensable material bases for human survival and development. Since the Industrial Revolution, the human society has made progress, and the consumption of energy has increased dramatically, and the ecological environment has been seriously damaged. In order to solve the problem of energy shortage and deterioration of ecological environment, various wave energy devices have been developed in the world, which have no pollution, large reserves and wide distribution of wave energy. This paper describes the research status of wave power generation devices at home and abroad, and analyzes the working principle and characteristics of various wave power generation devices. According to the principle of wave energy conversion, a new type of wave power generating device with spherical pendulum is proposed. The principle of wave power generation is analyzed, and the simulation and optimization of wave power generation device are carried out by AQWA. The main contents of this paper are as follows: (1) based on the theory of micro-amplitude wave and the potential function of incident wave, the velocity, acceleration and track of water quality point are calculated, and some theoretical knowledge of AQWA hydrodynamic software is introduced. (2) according to the wave conversion principle, a new type of spherical pendulum wave generator is proposed, and its working principle and advantages are introduced. Based on the distribution of wave resources in the waters around Fujian, According to the theory of Froud-Krylov hypothesis, the horizontal wave force of the device is analyzed. (3) the spherical pendulum wave power generation device is simulated by AQWA hydrodynamic software. Under the same sea condition, the motion law of the spherical floating body is obtained, which indicates the feasibility and periodicity of the device, and the RAO value and hydrodynamic parameters of the floating body are obtained. The simulation results show that the wave height is the main factor affecting the amplitude of the wave diagram, and the larger the wave height, the larger the swing angle range of the spherical floating body. The period is the factor that affects the response speed of the spherical floating body, the smaller the period, the faster the response, the wider the range of the swing angle, the more the wave direction is the main factor that affects the stability of the spherical floating body. The optimum operating angle of the system is that the mean wave direction is zero angle to any midline of the generator. (4) the distance between the spherical floating bodies, the draught depth and the radius of the floating body are optimized under the same wave parameters. It is found that the distance between the spherical floating bodies, the size of the floating bodies are the main factors of the interaction between the floating bodies, the draught depth is mainly the stability of the pendulum angle of the spherical floating bodies of the device, and the main factors to realize stable power generation are as follows. The radiation damping and additional mass increase with the increase of drainage volume. The distance between the floating bodies is 6 m, the draught depth is 0.9 m, the radius is 2 m, the whole swinging effect of the spherical floating body is good, and it can capture more wave energy. (5) the design of the spherical tilting wave power generating device is studied in this paper. Simulation and optimization provide theoretical basis for the manufacture and practical application of physical prototype.
【學位授予單位】：集美大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM612

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