浮體繩輪波浪發(fā)電裝置結(jié)構(gòu)形狀試驗(yàn)研究
發(fā)布時(shí)間：2018-11-20 17:50
【摘要】：近年來(lái),為了控制環(huán)境污染,解決能源危機(jī),發(fā)展可再生清潔能源已經(jīng)成為了當(dāng)務(wù)之急,新能源產(chǎn)業(yè)也日益受到世界各國(guó)的重視。我國(guó)是海洋大國(guó),海洋能源蘊(yùn)含量極其豐富,因此,積極發(fā)展海洋可再生清潔能源技術(shù),成為了我國(guó)新能源戰(zhàn)略的一個(gè)重要組成部分。 本論文課題就是依托于國(guó)家可再生能源專(zhuān)項(xiàng)資金資助項(xiàng)目“浮體繩輪波浪發(fā)電技術(shù)研究與試驗(yàn)”,主要研究浮體繩輪波浪發(fā)電裝置的浮體形狀。浮體繩輪波浪發(fā)電技術(shù)是一種振蕩浮子式的發(fā)電技術(shù),主要利用繩輪結(jié)構(gòu)來(lái)采集波浪能量,具有結(jié)構(gòu)簡(jiǎn)單、成本低、效率高等特點(diǎn)。 本文研究的主要目的是尋求合理的浮體結(jié)構(gòu)形狀,以期采集波浪能能力達(dá)到最大,研究?jī)?nèi)容對(duì)整個(gè)項(xiàng)目的順利完成具有重要的理論和實(shí)際意義。 本文研究?jī)?nèi)容如下： 1、簡(jiǎn)單介紹本項(xiàng)目發(fā)電裝置的原理,對(duì)浮體進(jìn)行水動(dòng)力分析,總結(jié)出附連水質(zhì)量的計(jì)算方法,并推導(dǎo)出浮體在無(wú)阻尼自由振蕩下的濕固有頻率。結(jié)合小球彈簧振動(dòng)系統(tǒng)推導(dǎo)出波浪中浮體的垂蕩響應(yīng)方程,求得浮體在垂蕩方向上波浪能的吸收效率表達(dá)式。 2、針對(duì)三種不同底面形狀的浮體,計(jì)算比較了相同質(zhì)量的情況下不同底面形狀浮體的吃水深度,并推導(dǎo)出了三種不同底面形狀浮體波浪力表達(dá)式,最后根據(jù)理論推導(dǎo),結(jié)合實(shí)際條件,尋找到測(cè)算附連水質(zhì)量的方法。 3、針對(duì)共振浮體與輕薄浮體,通過(guò)浮體的垂蕩響應(yīng)方程,分析了波浪頻率對(duì)共振浮體垂蕩振幅的影響,并求得共振情況下浮體振幅與波振幅的放大倍數(shù)。 4、結(jié)合ANSYS-AQWA軟件對(duì)浮體運(yùn)動(dòng)進(jìn)行仿真分析,比較了三種不同底面形狀浮體的附連水質(zhì)量、濕固有頻率以及垂蕩方向上所受波浪力的大小,得出凸形底面浮體附連水質(zhì)量最小,所受波浪力最大；比較了共振浮體與輕薄浮體自由運(yùn)動(dòng)的垂蕩振幅以及增加外部阻尼力之后的垂蕩振幅,得出共振浮體自由運(yùn)動(dòng)垂蕩振幅大于輕薄浮體,外部阻尼力對(duì)共振浮體垂蕩振幅影響遠(yuǎn)大于輕薄浮體。 5、結(jié)合實(shí)驗(yàn)室條件對(duì)以上理論以及仿真分析進(jìn)行試驗(yàn)驗(yàn)證,驗(yàn)證得出凸形底面浮體附連水質(zhì)量最小,發(fā)電功率最大,較適合浮體繩輪波浪發(fā)電裝置；受繩子拉力作用,共振浮體發(fā)電功率小于輕薄浮體,其原因主要是繩子上的阻尼力對(duì)共振浮體垂蕩振幅影響遠(yuǎn)大于輕薄浮體。
[Abstract]:In recent years, in order to control environmental pollution and solve the energy crisis, the development of renewable clean energy has become an urgent task, and the new energy industry has been paid more and more attention in the world. China is a big marine country with abundant marine energy. Therefore, the active development of marine renewable clean energy technology has become an important part of China's new energy strategy. This thesis is based on the national renewable energy project "Research and experiment of floating Wheel Wave Power Generation Technology", which mainly studies the floating body shape of floating Rope Wheel Wave Power Generation device. Floating bobbin wave power generation technology is a kind of oscillating float power generation technology. It mainly uses rope wheel structure to collect wave energy. It has the characteristics of simple structure, low cost, high efficiency and so on. The main purpose of this paper is to find a reasonable shape of floating body structure in order to obtain the maximum wave energy. The research content has important theoretical and practical significance for the successful completion of the whole project. The main contents of this paper are as follows: 1. The principle of this project is briefly introduced, the hydrodynamic analysis of floating body is carried out, the calculation method of attached water mass is summarized, and the wet natural frequency of floating body under undamped free oscillation is deduced. Based on the small ball spring vibration system, the response equation of floating body in wave is derived, and the expression of wave energy absorption efficiency is obtained. 2. For three kinds of floating bodies with different bottom shape, the draught depth of different bottom shape floating bodies with the same mass is calculated and compared, and the wave force expressions of three different bottom shape floating bodies are derived. Finally, according to the theoretical derivation, According to the actual conditions, the method of measuring the quality of attached water is found. 3. For the resonant floating body and the light floating body, the influence of wave frequency on the oscillating amplitude of the resonant floating body is analyzed by the pendulum response equation of the floating body, and the magnification of the floating body amplitude and the wave amplitude under the resonance condition is obtained. 4. Combined with ANSYS-AQWA software, the motion of floating body is simulated and analyzed. The attached water mass, wet natural frequency and wave force in three different bottom shapes of floating body are compared. It is concluded that the mass of attached water is the smallest and the wave force is the largest. By comparing the free motion amplitude of resonant floating body with that of light and thin floating body, and by increasing the external damping force, it is concluded that the free motion swing amplitude of resonance floating body is larger than that of light and thin floating body. The influence of external damping force on the swing amplitude of the resonant floating body is much greater than that of the light floating body. 5. The above theory and simulation analysis are tested and verified by the laboratory conditions. The results show that the floating body with convex bottom surface has the minimum attached water quality and the largest generating power, which is more suitable for the wave power generating device of the floating body rope wheel. The power of resonance floating body is less than that of light floating body because the damping force on the rope has much greater influence on the swing amplitude of resonance floating body than that of thin floating body.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM612;P743.2
本文編號(hào)：2345572
[Abstract]:In recent years, in order to control environmental pollution and solve the energy crisis, the development of renewable clean energy has become an urgent task, and the new energy industry has been paid more and more attention in the world. China is a big marine country with abundant marine energy. Therefore, the active development of marine renewable clean energy technology has become an important part of China's new energy strategy. This thesis is based on the national renewable energy project "Research and experiment of floating Wheel Wave Power Generation Technology", which mainly studies the floating body shape of floating Rope Wheel Wave Power Generation device. Floating bobbin wave power generation technology is a kind of oscillating float power generation technology. It mainly uses rope wheel structure to collect wave energy. It has the characteristics of simple structure, low cost, high efficiency and so on. The main purpose of this paper is to find a reasonable shape of floating body structure in order to obtain the maximum wave energy. The research content has important theoretical and practical significance for the successful completion of the whole project. The main contents of this paper are as follows: 1. The principle of this project is briefly introduced, the hydrodynamic analysis of floating body is carried out, the calculation method of attached water mass is summarized, and the wet natural frequency of floating body under undamped free oscillation is deduced. Based on the small ball spring vibration system, the response equation of floating body in wave is derived, and the expression of wave energy absorption efficiency is obtained. 2. For three kinds of floating bodies with different bottom shape, the draught depth of different bottom shape floating bodies with the same mass is calculated and compared, and the wave force expressions of three different bottom shape floating bodies are derived. Finally, according to the theoretical derivation, According to the actual conditions, the method of measuring the quality of attached water is found. 3. For the resonant floating body and the light floating body, the influence of wave frequency on the oscillating amplitude of the resonant floating body is analyzed by the pendulum response equation of the floating body, and the magnification of the floating body amplitude and the wave amplitude under the resonance condition is obtained. 4. Combined with ANSYS-AQWA software, the motion of floating body is simulated and analyzed. The attached water mass, wet natural frequency and wave force in three different bottom shapes of floating body are compared. It is concluded that the mass of attached water is the smallest and the wave force is the largest. By comparing the free motion amplitude of resonant floating body with that of light and thin floating body, and by increasing the external damping force, it is concluded that the free motion swing amplitude of resonance floating body is larger than that of light and thin floating body. The influence of external damping force on the swing amplitude of the resonant floating body is much greater than that of the light floating body. 5. The above theory and simulation analysis are tested and verified by the laboratory conditions. The results show that the floating body with convex bottom surface has the minimum attached water quality and the largest generating power, which is more suitable for the wave power generating device of the floating body rope wheel. The power of resonance floating body is less than that of light floating body because the damping force on the rope has much greater influence on the swing amplitude of resonance floating body than that of thin floating body.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM612;P743.2
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