發(fā)布時(shí)間：2018-04-22 23:32

  本文選題：三維數(shù)值波浪水槽 + 網(wǎng)衣�。� 參考：《大連理工大學(xué)》2014年碩士論文

【摘要】：近年來(lái),隨著人類(lèi)對(duì)海洋漁業(yè)產(chǎn)品需求量日漸增多,野生海生物被過(guò)度捕撈。同時(shí),高速的經(jīng)濟(jì)發(fā)展而帶來(lái)的近海工業(yè)污染,使得近海水域生態(tài)環(huán)境逐漸惡化。需求量的增大以及生存環(huán)境的惡化,使得漁業(yè)資源幾近枯竭,市場(chǎng)供不應(yīng)求。為解決上述問(wèn)題,深海網(wǎng)箱養(yǎng)殖近年來(lái)發(fā)展迅速。相比近海養(yǎng)殖,深海養(yǎng)殖意味更強(qiáng)的風(fēng)浪和水流條件,網(wǎng)箱在此惡劣壞境下極易破壞,同時(shí)網(wǎng)箱內(nèi)水流和波浪等養(yǎng)殖環(huán)境也和魚(yú)類(lèi)生長(zhǎng)息息相關(guān)。漁網(wǎng)作為水產(chǎn)養(yǎng)殖網(wǎng)箱的重要組成部分,是一種復(fù)雜的柔性結(jié)構(gòu)物,以其作為主體進(jìn)行相關(guān)波浪的研究非常少。針對(duì)以上情況,我們首先進(jìn)行了物理模型試驗(yàn)和相應(yīng)數(shù)值模擬,研究了網(wǎng)衣對(duì)波浪傳播的影響,找出網(wǎng)衣與波浪相互作用機(jī)理及規(guī)律；在此基礎(chǔ)上進(jìn)一步研究了波浪與網(wǎng)箱的水動(dòng)力特性和網(wǎng)箱對(duì)波浪傳播的影響。 本文將CFD軟件FLUENT應(yīng)用于數(shù)值模擬,采用多孔介質(zhì)模型模擬網(wǎng)衣,建立了模擬網(wǎng)衣與波浪相互作用的三維數(shù)值波浪水槽模型�；谠摂�(shù)值模型研究了波浪經(jīng)過(guò)網(wǎng)衣作用后波高衰減的變化規(guī)律,并與物理模型試驗(yàn)結(jié)果進(jìn)行比較。通過(guò)對(duì)比數(shù)值模擬和物理模型試驗(yàn)的結(jié)果,證明了該三維數(shù)值模型模擬網(wǎng)衣對(duì)波浪傳播影響的可行性。 論文內(nèi)容包含五章：第一章緒論,簡(jiǎn)要介紹了課題研究背景、目的及有關(guān)其國(guó)內(nèi)外研究進(jìn)展。第二章介紹了數(shù)值模型的相關(guān)數(shù)學(xué)方法,包括控制方程、多孔介質(zhì)模型與網(wǎng)衣的相互轉(zhuǎn)化、三維數(shù)值波浪水槽的建立及其網(wǎng)格的劃分、數(shù)值波浪水槽造波和消波的數(shù)學(xué)原理。第三章首先驗(yàn)證了數(shù)值波浪水槽造波消波的有效性,接著通過(guò)數(shù)值模型模擬了網(wǎng)衣周?chē)牟ɡ藞?chǎng),并對(duì)其進(jìn)行了相關(guān)物理模型試驗(yàn)驗(yàn)證,初步了解了網(wǎng)衣與波浪作用機(jī)理,得出了網(wǎng)衣對(duì)波浪傳播影響規(guī)律。第四章研究了不同入水深度的網(wǎng)片組合對(duì)波浪傳播帶來(lái)的影響以及改變網(wǎng)片個(gè)數(shù)對(duì)周?chē)ɡ藞?chǎng)的影響。第五章根據(jù)之前得出的網(wǎng)衣與波浪相互作用結(jié)論進(jìn)一步研究了網(wǎng)箱對(duì)波浪傳播的影響,同時(shí)研究了網(wǎng)箱形狀、網(wǎng)衣密實(shí)度等參數(shù)改變對(duì)波浪場(chǎng)的影響,最后研究了網(wǎng)箱的波浪水動(dòng)力特性。
[Abstract]:In recent years, with the increasing demand for marine fishery products, wild marine organisms are overfished. At the same time, the high-speed economic development brings about the pollution of offshore industry, which makes the ecological environment of offshore waters deteriorate gradually. With the increase of demand and the deterioration of living environment, fishery resources are nearly exhausted, and the market demand exceeds supply. In order to solve the above problems, deep-sea cage culture has developed rapidly in recent years. Compared with offshore aquaculture, deep-sea aquaculture means stronger wind, wave and current conditions, and cage is easy to be destroyed in this bad environment. At the same time, the culture environment such as current and wave in the net box is closely related to the growth of fish. As an important part of aquaculture cage, fishing net is a kind of complex flexible structure. In view of the above situation, we first carried out the physical model test and corresponding numerical simulation, studied the influence of the net coat on the wave propagation, and found out the interaction mechanism and law between the net coat and the wave. On this basis, the hydrodynamic characteristics of waves and cages and the effects of cages on wave propagation are further studied. In this paper, the CFD software FLUENT is applied to numerical simulation, and a three-dimensional numerical wave flume model is established to simulate the interaction between the net coat and the wave by using the porous medium model. Based on the numerical model, the variation law of wave height attenuation after the wave passing through the net is studied, and the results are compared with the results of the physical model test. By comparing the results of numerical simulation and physical model test, the feasibility of simulating the effect of the net coat on wave propagation is proved by the three-dimensional numerical model. The thesis consists of five chapters: the first chapter is an introduction, which briefly introduces the research background, purpose and research progress at home and abroad. The second chapter introduces the mathematical methods of the numerical model, including the governing equation, the transformation between the porous media model and the mesh, the establishment of the three-dimensional numerical wave tank and its mesh division, and the mathematical principles of wave generation and wave elimination in the numerical wave tank. In chapter 3, the effectiveness of wave suppression in numerical wave flume is first verified, and then the wave field around the net is simulated by numerical model, and the physical model experiment is carried out to verify the wave field around the net, and the mechanism of the action between the net and the wave is preliminarily understood. The influence of net clothing on wave propagation is obtained. In chapter 4, the influence of different depth of mesh on wave propagation and the influence of changing the number of mesh on the wave field are studied. In chapter 5, the influence of cage on wave propagation is further studied according to the conclusion of the interaction between netting and wave, and the influence of the shape of cage and the density of netting on the wave field is also studied. Finally, the wave hydrodynamic characteristics of cages are studied.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：S967.3;P731.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 寧德志;滕斌;周斌珍;劉珍;;源造波法在三維完全非線性數(shù)值波浪水槽中的應(yīng)用[J];大連海事大學(xué)學(xué)報(bào);2008年02期

2 桂福坤,王煒霞,張懷慧;網(wǎng)箱工程發(fā)展現(xiàn)狀及展望[J];大連水產(chǎn)學(xué)院學(xué)報(bào);2002年01期

3 郭健,桂福坤,張懷慧;沉子重量與單片網(wǎng)衣水阻力及變形的試驗(yàn)研究[J];大連水產(chǎn)學(xué)院學(xué)報(bào);2004年04期

4 胡保友;楊新華;;國(guó)內(nèi)外深海養(yǎng)殖網(wǎng)箱現(xiàn)狀及發(fā)展趨勢(shì)[J];硅谷;2008年10期

5 趙云鵬;李玉成;董國(guó)海;;深水抗風(fēng)浪網(wǎng)箱水動(dòng)力學(xué)特性研究[J];漁業(yè)現(xiàn)代化;2011年02期

6 宋偉華;梁振林;黃六一;呂永林;陳伯海;;波浪經(jīng)過(guò)網(wǎng)衣的特性研究[J];海洋與湖沼;2007年01期

7 詹杰民,胡由展,趙陶,孫明光;漁網(wǎng)水動(dòng)力試驗(yàn)研究及分析[J];海洋工程;2002年02期

8 林德芳;關(guān)長(zhǎng)濤;黃濱;黃文強(qiáng);;海水養(yǎng)殖網(wǎng)箱抗風(fēng)浪措施的探討[J];海洋水產(chǎn)研究;2005年06期

9 趙云鵬;劉延星;畢春偉;;網(wǎng)衣波浪水動(dòng)力特性的數(shù)值模擬初步研究[J];漁業(yè)現(xiàn)代化;2013年02期

10 宋協(xié)法,萬(wàn)榮,黃文強(qiáng);深�？癸L(fēng)浪網(wǎng)箱錨泊系統(tǒng)的設(shè)計(jì)[J];青島海洋大學(xué)學(xué)報(bào)(自然科學(xué)版);2003年06期

，

本文編號(hào)：1789462