發(fā)布時(shí)間：2018-01-09 14:23

  本文關(guān)鍵詞：擺板式波浪能利用裝置的動(dòng)力特性模擬研究　出處：《山東大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 擺板式 波浪能 Flow3D 數(shù)值模擬

【摘要】：目前隨著人口增加,能源消耗量的上升,石油、天然氣等常規(guī)能源的消耗殆盡以及環(huán)境污染的日益嚴(yán)重,人們不得不開始關(guān)注新的能源形式,這種能源形式的開發(fā)利用必須是符合環(huán)境友好、經(jīng)濟(jì)可行的可再生能源以及可持續(xù)發(fā)展的理念。波浪能作為取之不盡、用之不竭的清潔、可再生能源之一。對(duì)波浪能進(jìn)行大規(guī)模的開發(fā)和利用,可以緩解常規(guī)能源的短缺問題同時(shí)也可以降低溫室氣體的排放。相信波浪能轉(zhuǎn)換技術(shù)將在未來的能源市場(chǎng)中將發(fā)揮至關(guān)重要的作用。 在豐富的可再生能源太陽能、風(fēng)能、生物質(zhì)能、波浪能中,就只波浪能一種能源的總功率值就能達(dá)2×108kW。而我國(guó)在近20kM的海岸線,中也蘊(yùn)藏著了1599.52×104kW的波浪能。在不同的波浪能利用技術(shù)當(dāng)中,本論文選取擺板式波浪能利用裝置進(jìn)行研究。擺板式波浪能利用裝置就是通過擺板與波浪的相互作用,從而使得擺板左右擺動(dòng),從而將波浪能轉(zhuǎn)換為擺板的動(dòng)能,從而達(dá)到將波浪能進(jìn)行利用的效果。 通過分析擺板式波浪能利用裝置的原理和系統(tǒng)組成,可知擺板式波浪能利用裝置的關(guān)鍵技術(shù)在于對(duì)擺板的動(dòng)力特性分析。本文通過數(shù)值模擬的方法對(duì)擺板與波浪的流固耦合進(jìn)行計(jì)算分析。 為了能都精確地模擬出擺板在波浪中的動(dòng)力特性,必須先做出數(shù)值水槽,即對(duì)波浪運(yùn)動(dòng)進(jìn)行精確的模擬。本文是基于Flow3D建立數(shù)值水槽。通過速度入口造波法和變換空間步長(zhǎng)消波法,成功構(gòu)建了二維和三維數(shù)值波浪水槽,并模擬得到斯托克斯波。 在三維波浪數(shù)值水槽中,對(duì)密度分別為650kG/m3、700kG/m3、750kG/m3的擺板與波高為0.7m和0.5m的波浪進(jìn)行數(shù)值模擬,分析擺板的動(dòng)力特性變化。隨著擺板密度的增加,擺板角速度減小,擺板運(yùn)動(dòng)力矩增加,擺板所捕獲的波浪能效率也增大。 研究在波浪波高為h=0.5m時(shí),不同寬度擺板波浪相互作用后的動(dòng)力特性變化。隨著擺板寬度的增加,擺板的擺動(dòng)角度相差不大,而擺板擺動(dòng)力矩增加。擺板的功率也增加。在不同高度的擺板和波浪相互作用的動(dòng)力特性研究中,隨著擺板高度的增加,擺板的轉(zhuǎn)動(dòng)角度和角速度都減小。板高為3.5m的擺板捕獲波浪能的平均功率達(dá)到最大值1.23kW,板高為3.5m時(shí)為最佳高度。并且分析了擺板在受到不同彈性系數(shù)的情況下所受到的負(fù)載力的變化。 對(duì)擺板捕獲波浪能的效率,即擺板所受的波浪能對(duì)擺軸做的功與波浪能的比值進(jìn)行研究。分別得到了擺板在不同密度、板寬下波浪能的轉(zhuǎn)換效率。
[Abstract]:At present, with the increase of population, the increase of energy consumption, the depletion of conventional energy, such as oil, natural gas and environmental pollution, people have to begin to pay attention to new forms of energy. The development and utilization of this form of energy must be in line with the concept of environmentally friendly, economically viable renewable energy and sustainable development. Wave energy as an inexhaustible clean. One of the renewable energy sources. The development and utilization of wave energy on a large scale. It can alleviate the shortage of conventional energy and reduce greenhouse gas emissions. It is believed that wave energy conversion technology will play a crucial role in the future energy market. In the abundant renewable energy such as solar energy, wind energy, biomass energy and wave energy, the total power value of only one kind of energy can reach 2 脳 108 kW. and the coastline of our country is nearly 20 km. There are 1599.52 脳 104kW wave energy in different wave energy utilization technology. In this paper, the swinging plate wave energy utilization device is selected. The swinging plate wavy energy utilization device is through the interaction between the swinging plate and the wave, thus making the swinging plate to the left and right. The wave energy is converted into the kinetic energy of the pendulum plate, and the wave energy is utilized. The principle and system composition of the swinging plate wave energy utilization device are analyzed. It is known that the key technology of the swinging plate wave energy utilization device lies in the analysis of the dynamic characteristics of the pendulum plate. In this paper, the fluid-solid coupling between the swinging plate and the wave is calculated and analyzed by numerical simulation. In order to accurately simulate the dynamic characteristics of the pendulum plate in waves, numerical flume must be made first. In this paper, the numerical flume is established based on Flow3D. The two-dimensional and three-dimensional numerical wave flume is successfully constructed by the velocity inlet wave-making method and the transform space step wave elimination method. The Stokes wave is simulated. In a three dimensional wave numerical flume, numerical simulation is carried out on a pendulum plate with a density of 650 KG / m ~ (3) and a wave with a density of 700kG / m ~ (3) and a wave height of 0.7 m and 0.5 m respectively. With the increase of the plate density, the angular velocity of the plate decreases, the motion moment of the plate increases, and the wave energy efficiency of the plate is increased. The dynamic characteristics of swinging plate with different width are studied when the wave height is 0.5 m. With the increase of swinging width, the swing angle of swinging plate is not different. The wobble moment of swinging plate increases and the power of swinging plate increases. In the study of dynamic characteristics of swinging plate and wave interaction at different heights, with the increase of swinging plate height. The rotation angle and angular velocity of the pendulum plate are decreased, and the average power of the wave energy captured by the pendulum plate with a height of 3.5 m reaches the maximum value of 1.23 kW. The optimum height of the plate is 3.5m, and the load force of the pendulum plate under different elastic coefficients is analyzed. The efficiency of wave energy capture, that is, the ratio of wave energy to wave energy on the pendulum axis, is studied, and the conversion efficiency of wave energy at different density and width is obtained.
【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
【分類號(hào)】：P743.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 游亞戈,鄭永紅,沈永明,吳必軍,劉榮;Wave Energy Study in China: Advancements and Perspectives[J];China Ocean Engineering;2003年01期

2 齊鵬,王永學(xué);三維數(shù)值波浪水池技術(shù)與應(yīng)用[J];大連理工大學(xué)學(xué)報(bào);2003年06期

3 王言英;波浪中浮體運(yùn)動(dòng)與遭遇荷載計(jì)算研究[J];大連理工大學(xué)學(xué)報(bào);2004年03期

4 ;國(guó)內(nèi)外海洋能技術(shù)的發(fā)展與展望[J];電氣技術(shù);2005年07期

5 劉全根;國(guó)家能源結(jié)構(gòu)調(diào)整的戰(zhàn)略選擇——加強(qiáng)可再生能源開發(fā)利用[J];地球科學(xué)進(jìn)展;2000年02期

6 肖惠民;于波;蔡維由;;世界海洋波浪能發(fā)電技術(shù)的發(fā)展現(xiàn)狀與前景[J];水電與新能源;2011年01期

7 劉美琴;鄭源;趙振宙;仲穎;;波浪能利用的發(fā)展與前景[J];海洋開發(fā)與管理;2010年03期

8 張松;劉富鈾;張濱;馬治忠;姜波;;我國(guó)近海波浪能資源調(diào)查與評(píng)估[J];海洋技術(shù);2012年03期

9 勾艷芬;葉家瑋;李峰;王冬姣;;振蕩浮子式波浪能轉(zhuǎn)換裝置模型試驗(yàn)[J];太陽能學(xué)報(bào);2008年04期

10 陳幼松;;歐美各國(guó)鼓勵(lì)利用新能源的政策[J];太陽能;1993年01期

相關(guān)博士學(xué)位論文 前1條

1 劉臻;岸式振蕩水柱波能發(fā)電裝置的試驗(yàn)及數(shù)值模擬研究[D];中國(guó)海洋大學(xué);2008年

，

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